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Colon cancer screening decisions: What’s the best option and when?

illustration of intestines flanked by two figures in medical scrubs, the one on the left is holding a clipboard and the one on the right is holding a magnifying glass and holding it over the colon

Colorectal cancer (CRC) is the second leading cause of cancer deaths in the United States, and rates are rising, particularly in adults ages 20 to 49. Unfortunately, approximately 30% of eligible people in the US still have not been screened for CRC.

Colon cancer may be prevented with screening tests that look for cancer or precancerous growths called colon polyps.

When should you start screening?

The United States Preventative Services Task Force recommends starting screening for CRC at age 45 for average-risk patients. These guidelines reflect the most up-to-date research on when risk for colon cancer begins to increase.

Average-risk patients are those with no personal or family history of colon cancer or a genetic condition that increases the risk of developing CRC. For this reason, it is important for patients to share their family history, including all cancer diagnoses in blood relatives, with their primary care doctor, who can help decide the right time to begin colon cancer screening.

High-risk patients are advised to begin screening before age 45. A primary care physician can help determine when and how a patient who is concerned about their risk level should be screened for CRC. Patients who have a history of CRC or polyps; a first-degree family member with CRC or advanced polyps (those that would have gone on to become CRC if they had not been removed); a family history of certain genetic syndromes; or a history of inflammatory bowel disease (like Crohn’s disease or ulcerative colitis) are some examples of high-risk factors.

What are the options for CRC screening?

Colonoscopy: Colonoscopy is the gold standard of screening tests, and identifies approximately 95% of CRC. It is also the only method that allows a gastroenterologist to both detect and remove potentially precancerous colon polyps. Colonoscopies are considered low-risk procedures, but they do have a small risk of bleeding and perforation that increases in older age groups.

Patients need to clean out their colon prior to the procedure by drinking a colonoscopy prep, which washes stool out of the colon so that it can be properly assessed during the procedure. The prescription instructions for the prep are provided by the gastroenterologist’s office.

In most cases, the procedure will be performed under sedation to ensure the patient is as comfortable as possible. It is important to note that patients are not placed under general anesthesia, but most remain sleepy and comfortable throughout their colonoscopy.

During the colonoscopy, a gastroenterologist will insert a flexible tube with a camera at the end, called a colonoscope, into the rectum. The entire colon is then carefully examined. If no polyps are detected and the preparation (cleanout) of the colon is adequate, a repeat a colonoscopy is suggested in 10 years. If polyps are detected, or the patient’s risk level or symptoms change, this interval will be shorter.

FIT testing: The fecal immunochemical test (FIT) is a lab test that looks for hidden blood in the stool. Patients use a kit to collect their stool and then use a probe to scrape the stool, which is then placed into a tube and mailed to the lab. FIT testing is repeated every year. A drawback of FIT testing is that it has a false positive rate of approximately 5%. It can effectively rule out CRC with 79% accuracy. FIT testing is noninvasive, convenient, and cost-effective, making it an acceptable alternative to a colonoscopy for many people. If a stool test is positive, a colonoscopy is needed to evaluate the reason for the positive test.

Flexible sigmoidoscopy: A flexible tube with a camera is used to look at the rectum and the lower part of the colon. The advantages of this procedure are that it is faster than a colonoscopy (only 5 to 15 minutes) and requires less aggressive laxative medications. Typically, patients receive a flexible sigmoidoscopy every five years if no polyps are detected. As this test does not examine the whole colon, it cannot detect cancers or polyps in the unexamined portion. At best, it can detect 70% of cancers and polyps. If an abnormality is detected, a follow-up colonoscopy is needed to look at the entire colon.

CT colonography: A CT scan is used to visualize your rectum and entire colon. Just like with a colonoscopy, patients need to take laxative medications the night before to empty the colon. A small tube is placed in the rectum to expand the colon to get clear pictures. This test may be useful for patients who cannot tolerate anesthesia or have other medical conditions that prevent them from having a colonoscopy. A drawback of CT colonography is radiation exposure, and finding unrelated abnormalities outside the colon that can lead to unnecessary tests. While CT colonography is about 88.7% accurate at finding certain polyps, it is less accurate than colonoscopy overall. If the CT colonography result is abnormal, a colonoscopy is required for full evaluation of the colon.

Cologuard: This is a test where patients collect their stool, scrape it with a probe, insert it into a container with preservative, and mail it to the lab. This test looks for atypical DNA, or traces of blood in the collected stool that may be suggestive of precancerous polyps or CRC. Typically, patients repeat the test every three years. If the Cologuard test is positive, a colonoscopy is necessary for further evaluation. However, Cologuard’s accuracy is still limited; 13% of the time the test indicates the patient may have cancer when they do not. In 2019, a study showed that annual FIT testing or colonoscopy may be more effective and less costly than Cologuard. Further research is ongoing to evaluate how accurate (and thus how useful) this test is at detecting CRC.

Which screening option should you choose?

The most important part of colon cancer screening is to have a screening test performed. For most patients, colonoscopy or FIT testing are the most common ways to screen for colon cancer. However, there are other options to consider if you are unable to undergo or are uncomfortable with colonoscopy or FIT testing. Ultimately, this is an important and personalized decision, and a discussion for a patient to have with their healthcare provider, so that the right test can be done at the right time.

About the Authors

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Nisa Desai, MD, Contributor

Dr. Nisa Desai is a practicing hospitalist physician at Beth Israel Deaconess Medical Center, and an instructor in medicine at Harvard Medical School. She completed undergraduate education at Northwestern University, followed by medical school at the … See Full Bio View all posts by Nisa Desai, MD photo of Loren Rabinowitz, MD

Loren Rabinowitz, MD, Contributor

Dr. Loren Rabinowitz is an instructor in medicine Beth Israel Deaconess Medical Center and Harvard Medical School, and an attending physician in the Inflammatory Bowel Disease Center at BIDMC. Her clinical research is focused on the … See Full Bio View all posts by Loren Rabinowitz, MD

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Struggling to sleep? Your heart may pay the price

Alarm clock on wood table shows 2:40 am; on dark blue background is crescent moon and fuzzy stars, concept is insomnia

Growing evidence suggests that poor sleep is linked to a host of health problems, including a higher risk of high blood pressure, diabetes, obesity, and heart disease. Now, a recent study on people in midlife finds that having a combination of sleep problems — such as trouble falling asleep, waking up in the wee hours, or sleeping less than six hours a night — may nearly triple a person’s risk of heart disease.

"These new findings highlight the importance of getting sufficient sleep," says sleep specialist Dr. Lawrence Epstein, assistant professor of medicine at Harvard Medical School. Many things can contribute to a sleep shortfall, he adds. Some people simply don’t set aside enough time to sleep. Others have habits that disrupt or interfere with sleep. And some people have a medical condition or a sleep disorder that disrupts the quality or quantity of their sleep.

Who was in the study?

The researchers drew data from 7,483 adults in the Midlife in the United States Study who reported information about their sleep habits and heart disease history. A subset of the participants (663 people) also used a wrist-worn device that recorded their sleep activity (actigraphy). Slightly more than half of participants were women. Three-quarters reported their race as white and 16% as Black. The average age was 53.

Researchers chose to focus on people during midlife, because that’s when adults usually experience diverse and stressful life experiences in both their work and family life. It’s also when clogged heart arteries or atherosclerosis (an early sign of heart disease) and age-related sleep issues start to show up.

How did researchers assess sleep issues?

Sleep health was measured using a composite of multiple aspects of sleep, including

  • regularity (whether participants slept longer on work days versus nonwork days)
  • satisfaction (whether they had trouble falling asleep; woke up in the night or early morning and couldn’t get back to sleep; or felt sleepy during the day)
  • alertness (how often they napped for more than five minutes)
  • efficiency (how long it took them to fall asleep at bedtime)
  • duration (how many hours they typically slept each night).

To assess heart-related problems, researchers asked participants "Have you ever had heart trouble suspected or confirmed by a doctor?" and "Have you ever had a severe pain across the front of your chest lasting half an hour or more?"

A "yes" answer to either question prompted follow-up questions about the diagnosis, which included problems such as angina (chest pain due to lack of blood flow to the heart muscle), heart attack, heart valve disease, an irregular or fast heartbeat, and heart failure.

Poor sleep linked to higher heart risk

The researchers controlled for factors that might affect the results, including a family history of heart disease, smoking, physical activity, as well as sex and race. They found that each additional increase in self-reported sleep problems was linked to a 54% increased risk of heart disease compared to people with normal sleep patterns. However, the increase in risk was much higher — 141% — among people providing both self-reported and wrist-worn device actigraphy data, which together are considered more accurate.

Although women reported more sleep problems, men were more likely to suffer from heart disease. But overall, sex did not affect the correlations between sleep and heart health.

Black participants had more sleep and heart-related problems than white participants, but in general, the relationship between the two issues did not differ by race.

What does this mean for you?

If you have trouble falling or staying asleep, there are many ways to treat these common problems, from simple tweaks to your daily routine to specialized cognitive behavioral therapy that targets sleep issues. These are well worth trying, because getting a good night’s sleep helps in many ways.

"Treating sleep disorders that interfere with sleep can make you feel more alert during the day, improve your quality of life, and reduce the health risks related to poor sleep," says Dr. Epstein.

About the Author

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Julie Corliss, Executive Editor, Harvard Heart Letter

Julie Corliss is the executive editor of the Harvard Heart Letter. Before working at Harvard, she was a medical writer and editor at HealthNews, a consumer newsletter affiliated with The New England Journal of Medicine. She … See Full Bio View all posts by Julie Corliss

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Preventing C. diff in and out of the hospital

illustration of the digestive tract with bacteria, virus, and microorganisms with a hand at the lower right holding a magnifying glass

Many people seek medical attention when they have diarrhea, usually when it is severe or is not improving. Doctors like myself ask questions to see what could be causing the problem: Food poisoning? Irritable bowel syndrome? Medication side effects? We also consider that diarrhea may be due to Clostridioides difficile infection (CDI).

What is C. diff infection?

CDI is a bacterial infection that can cause severe problems in the gastrointestinal tract, especially the colon. C. diff is responsible for almost half a million infections in the US each year, and it can be a recurring problem: one in six patients with this infection will get it again within two months. Sadly, one in 11 patients over age 65 who is hospitalized for CDI will die within one month of infection due to the severity of illness in CDI. Therefore, CDI is an important public health consideration, and it’s important to get treatment.

Who at risk for C. diff infection?

There are certain risk factors for developing a CDI. These include being hospitalized, having been exposed to antibiotics, or having close contact with someone who has been diagnosed with the infection. If you are immunocompromised (have a weakened immune system), you may be also at higher risk of contracting CDI or of suffering a complication from it.

A major focus of reducing the burden of CDI in the healthcare system is trying to reduce the risk of getting CDI in the hospital. This includes testing for CDI in hospitalized patients who develop new diarrhea, and then isolating those patients into their own rooms.

Prevention also includes washing your hands thoroughly with soap and water. This is a particularly important point because in healthcare settings, alcohol-based sanitizer often is used for convenience when clinicians practice preventive infection control between caring for patients. Alcohol-based sanitizer is not effective against CDI as it is for other types of infection because, unlike other bacteria, C. diff organisms can form resistant spores.

So, to protect yourself in health care settings, you should make sure the people who interact with you — doctors, nurses, medical assistants, etc. — have washed their hands prior to touching you. It can seem rude to ask someone if they have washed their hands. However, all people who work with patients receive training about hand-washing, and sometimes we simply forget in the middle of busy days, so it can be helpful to remind us.

What about CDI transmission outside of medical settings?

What is less understood is when CDI happens outside the hospital. A recent article in Emerging Infectious Diseases reported the presence of CDI in patients who became infected in a way that doctors tend not to think of as often: getting CDI from someone they know without ever being hospitalized or taking antibiotics themselves.

As physicians, we are drilled on the factors previously mentioned — prior use of antibiotics, previous hospitalization — as critical events that may cause CDI. What this research demonstrated is that people without these risk factors developed CDI by being exposed to someone with CDI in the community. It turns out that this is a common way people end up contracting CDI. During my training, we learned that it is important to remind patients newly diagnosed with CDI to be mindful of good hand hygiene, and to avoid as many contacts as possible until their CDI treatments were completed. This new research suggests that focusing on community CDI transmission should be a greater priority.

How is CDI treated?

The first round of CDI treatment is usually antibiotics (ironic, since antibiotics can cause CDI). These include metronidazole, vancomycin (in oral form only), and fidaxomicin. Every few years guidelines are reviewed and updated, but generally, different antibiotic treatment courses are given based on CDI illness severity, whether there is an infection that is failing to clear, or if a new antibiotic needs to be tried.

A promising way to treat CDI, particularly in patients who have not been helped by antibiotic therapy, is to give a fecal microbiota transplant, or FMT. This treatment involves taking a healthy person’s stool donation and administering it during an endoscopy procedure by mouth, during a colonoscopy, or in frozen form by pill. I know — taking someone else’s poop sounds so icky! However, the purpose is to introduce healthy bacteria into a gut that is sick with CDI, and the theory is that these healthy bacteria expand and make the environment harder for the C. diff bacteria to live and cause problems.

What precautions help prevent spread ofCDI?

The rules are simple for reducing your risk of CDI. If you have a weakened immune system, stay away from people who have been diagnosed with CDI. Thoroughly wash your hands with soap and water (not disinfectant) to deal with C. diff spores more effectively. When you are sick, take antibiotics only if they are necessary; doctors often feel pressured to write antibiotic prescriptions for people who have viral illnesses (for which antibiotics do not work).

Evidence is not strong for taking probiotics or eating yogurt to prevent CDI, but these approaches are low-risk ways to introduce healthy bacteria into your gut; this may be reasonable, in part because some in the medical field continue to debate their effectiveness.

Bottom line: if you are having diarrhea that just won’t go away, talk to your doctor to see if you have CDI or if there is something else causing your symptoms.

About the Author

photo of Christopher D. Vélez, MD

Christopher D. Vélez, MD, Contributor

Dr. Christopher Vélez is an attending gastroenterologist in the Center for Neurointestinal Health of Massachusetts General Hospital's division of gastroenterology and the MGH department of medicine. He focuses on neurogastroenterology and motility disorders of the esophagus, … See Full Bio View all posts by Christopher D. Vélez, MD

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Period equity: What it is and why it matters

Photo of tampons, pads, and menstrual hygiene products on floor

It’s happened to so many people who menstruate: you’re going about your life until you realize that you just got your period. The ungainly scramble to find a restroom and the fervent prayer that you packed a menstrual product leaves you feeling anxious, vulnerable, and exposed. This is compounded by the fact that our society stigmatizes menstruation — or really, anything to do with a uterus — and a taboo hangs over these discussions.

This scenario is far worse if you are one of the nearly 22 million women living in poverty in the US who cannot afford menstrual hygiene products, a problem known as period poverty. One study in Obstetrics & Gynecology demonstrated that 64% of women reported ever having difficulty affording menstrual products, such as pads, tampons, or reusable products like menstrual cups. And 21% reported that they were unable to afford these products every month. People who are homeless or incarcerated are at particularly high risk of not having access to adequate menstrual hygiene products.

Why are period products a luxury?

Menstruating is a basic fact of human existence. Menstrual hygiene products are necessities, not luxuries, and should be treated as such. Unfortunately, food stamps and subsidies under the WIC (women, infants, and children) program that help with groceries do not cover menstrual products.

I have had patients tell me that they use toilet paper or paper towels instead of pads or tampons because they cannot afford menstrual products. People with heavy periods requiring frequent changes of these products particularly face financial challenges, as they must buy even more pads or tampons than the average menstruating person. If they try to extend the life of products by using them for multiple hours at a time, they can wind up with vulvar irritation and vaginal discomfort. They may also be at greater risk for toxic shock syndrome, a life-threatening infection.

Why is it important to talk about stigma around periods?

We need to address stigma around menstruation in order to understand and fix the challenges people face around access to menstrual hygiene products. Period poverty is real. Period equity should be real, too. Embarrassment or taboos may prevent people from advocating for themselves, but if that stigma is removed — or even eased by talking through these issues — we as a society can move forward to address the needs of half of our population. There is no equity when half the population bears the financial and physical distress as a consequence of the reproductive cycle needed to ensure human survival.

How can we address period poverty?

There are simple solutions to period poverty. The first is to eliminate the tax on menstrual products. Think about it: just as food, a necessity for all of us, is not taxed, menstrual products should not be taxed. Products that are reusable, such as menstrual cups or underwear, should be subsidized, and their use encouraged, to eliminate excess waste from individually wrapped pads and tampons. If these products are publicized, promoted, and affordable, more women may opt for them. Pads and tampons should be available free of charge in schools and federal buildings (note: automatic download).

Finally, you can take action: write to or call your legislators! There is a fantastic bill, Menstrual Equity For All Act of 2019, sponsored by Representative Grace Meng, that was introduced on March 26, 2019, but never received a vote. There is no good reason why this bill, which would allow homeless people, incarcerated people, students, and federal employees free access to menstrual hygiene products, was never even brought forward for a vote. We live in one of the world’s wealthiest countries, and lack of menstrual hygiene products should never impact someone’s ability to work or go to school. It’s time to stop treating people with a uterus as second-class citizens.

About the Author

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Huma Farid, MD, Contributor

Dr. Huma Farid is an obstetrician/gynecologist at Beth Israel Deaconess Medical Center, and an instructor in obstetrics and gynecology at Harvard Medical School. She directs the resident colposcopy clinic and is the associate program director for the obstetrics and … See Full Bio View all posts by Huma Farid, MD

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Adult female acne: Why it happens and the emotional toll

close-up photo of a woman's face showing a serious acne breakout around her eye and down the right side of her face

Acne can be frustrating, especially when it does not go away after your teenage years. Believe it or not, acne can continue to affect adults beyond adolescence, or develop for the very first time in adulthood. This may be particularly distressing for adult women, who are more likely to get acne after the age of 20 compared to men.

What is adult female acne?

Adult female acne can look very similar to teenage acne. While adult acne is commonly thought to affect the jawline and chin, it can appear on any part of the face or trunk. Adult women can have clogged pores, inflamed pus-filled bumps, or deep-seated cysts. Unfortunately, treatment options that worked well in the teenage years may not work as well in adult females with acne, due to triggering factors such as hormonal imbalance, stress, and diet.

There are many reasons adult females can get acne. Hormonal disturbances caused by pregnancy, menstrual cycle, menopause, and oral contraceptives can contribute to acne by modifying the production of certain hormones. These hormones stimulate oil production within the skin, promoting the growth of acne-causing bacteria. Stress can increase the production of substances that activate oil glands within the skin of acne patients. Consumption of dairy and high-glycemic foods is also linked to acne. Certain hair or skin products can clog pores and cause comedonal acne (blackheads and whiteheads). A board-certified dermatologist can help determine the appropriate treatment for the type of acne you have.

Consequences of adult acne and scarring

The extent to which acne causes emotional distress varies, and is not related to the severity of the acne or acne scars. Some women with acne may experience disruption in their personal and professional lives as they fear stigmatization in relationships and employment. Adult females may also be more likely to seek treatment for active acne when acne bumps and scarring persist.

Acne scarring can be disfiguring. Permanent changes in skin texture in the form of pits or raised scars may not be easily concealed with makeup. Raised scars may also lead to skin picking and worsening skin texture and pigment.

Acne can also heal with red or dark spots that may not resolve for weeks to months. The dark spots may persist even longer without proper sun protection, especially on darker skin. Having both acne and dark spots may negatively impact one’s quality of life and self-perception.

The emotional toll associated with acne may include an elevated risk of developing depression compared to patients who do not have acne. Clinical studies show that having severe acne can negatively affect quality of life on par with long-term diseases such as arthritis, diabetes, back pain, and asthma. If you have acne, extensive scarring, or dark spots of any severity that are affecting your mental health, you may benefit from earlier intervention with oral medications.

What are options for treatment and support?

Acne is a medical condition, but it only needs to be treated if the acne or marks left behind from it are bothersome to you. Please see a board-certified dermatologist (in person or virtually) for the best available options if you wish to seek treatment.

Your dermatologist may prescribe a combination of topical (skin) and oral treatments. Some of these medications may not be appropriate if you are pregnant or breastfeeding, or carry risks. Ask your dermatologist about hair and skin products that may be irritating, clogging pores, or promoting oil production in the skin, making your acne worse. Also, avoid skin picking to prevent scarring, and try to minimize emotional and physical stressors.

For individuals with dark spots or scarring, consult a board-certified dermatologist to get a personalized treatment geared to your skin concerns. Use a broad-spectrum, tinted sunscreen daily and reapply it every two hours to help prevent acne marks from worsening. If your acne is causing you significant mental distress, ask your doctor about mental health resources. Additionally, seeking treatment for your acne may help you feel better. Consider joining online or in-person support groups in your area.

For more information, visit the American Academy of Dermatology Acne Resource Center.

Follow Dr. Nathan on Twitter @NeeraNathanMD
Follow Dr. Patel on Twitter @PayalPatelMD

About the Authors

photo of Neera Nathan, MD, MSHS

Neera Nathan, MD, MSHS, Contributor

Dr. Neera Nathan is a dermatologist and researcher at Massachusetts General Hospital and Lahey Hospital and Medical Center. Her clinical and research interests include dermatologic surgery, cosmetic dermatology, and laser medicine. She is part of the … See Full Bio View all posts by Neera Nathan, MD, MSHS photo of Payal Patel, MD

Payal Patel, MD, Contributor

Dr. Payal Patel is a dermatology research fellow at Massachusetts General Hospital. Her clinical and research interests include autoimmune disease and procedural dermatology. She is part of the Cutaneous Biology Research Center, where she investigates medical … See Full Bio View all posts by Payal Patel, MD

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Talking to your doctor about your LGBTQ+ sex life

photo of a woman doctor talking with a man patient sitting by a window, view is over patient's shoulder

Editor’s note: in honor of Pride Month, we’re re-publishing a 2019 post by Dr. Cecil Webster.

Generally speaking, discussing what happens in our bedrooms outside of the bedroom can be anxiety-provoking. Let’s try to make your doctor’s office an exception. Why is this important? People in the LGBTQ+ community contend not only with a full range of health needs, but also with environments that may lead to unique mental and physical health challenges. Whether or not you have come out in general, doing so with your doctor may prove critical in managing your health. Sexual experiences, with their impact on identity, varied emotional significance, and disease risk, are a keystone for helping your doctor understand how to personalize your healthcare.

Admittedly, talking about your intimate sexual experiences or your gender identity may feel uncomfortable. Many LGBTQ+ patients worry that their clinicians may not be knowledgeable about their needs, or that they’ll to have to educate them. Finding a LGBTQ+ adept doctor, preparing ahead of time for your next appointment, and courageously asking tough questions can give you and your health the best shot.

Finding a skilled clinician who is LGBTQ+ adept

Many large cities have healthcare institutions whose mission centers on care for LGBTQ+ peoples. However, these organizations may prove inaccessible to many for a variety of reasons. Regardless of your location, asking friends, family, or others to recommend a clinician may be a game changer. If your trans friend had a relatively painless experience visiting an area gynecologist, perhaps your Pap smear may go smoothly there as well. If your coworker has a psychiatrist who regularly asks him about his Grindr use, perhaps it may be easier to navigate your gay relationship questions with her.

Word of mouth is often an undervalued method of finding someone skilled and attentive to the needs of LGBTQ+ individuals. Online, many clinicians offer a short bio with their areas of expertise, and there are provider directories featuring trusted clinicians. Further, some doctors regularly write articles and give talks that may offer clues about desired knowledge. A simple Google search of your provider may yield a bounty.

Next, give your doctor or healthcare organization a call. Don’t be shy about requesting someone whose practice matches your specific needs. Your health information is protected, and generally, physicians hold your clinical privacy dear. Keep in mind that not all clinics will know or share whether or not your doctor is, for example, also a lesbian, but they may pair you with someone well suited to your request or point you in the right direction.

Preparing for your appointment

Let’s say you are nervous about coming out to your doctor. A little preparation may ease this burden. Here are some quick tips:

  • Let them know you’re nervous at the start of the conversation.
  • Be as bold as you can tolerate.
  • Write down what you are excited about, nervous about, and/or curious about.
  • Go in with a few goals and start with what’s most important.
  • Maximize your comfort. If your partner is calming, bring them. If Beyoncé soothes what ails you, bring her along too.
  • Lightly correct or update your clinician if they get something wrong.

Ask tough questions, give clear answers

As a psychiatrist who works with kids and adults, I often hear questions like, “I don’t know really how to say this, but I started experimenting with other guys. Does this mean I’m gay?” I may start by asking if you’ve enjoyed it. My colleagues in health care might begin with the same question.

Pleasurable experiences come in all sorts of constellations, and healthy exploration is part of being human. Additionally, clinicians need to assess and address your safety. Many LGBTQ+ people are at higher risk of intimate partner violence. We may ask about your use of condoms, how many partners you’ve had recently, your use of substances during sex, and how these experiences may shift how you see yourself. Give clear answers if possible, but don’t fret if you’re uncertain. Your doctor will not likely provide a label or pry unnecessarily. They may offer constructive information on the use of condoms, reasons to consider using PrEP (which can effectively prevent HIV), and places you can go for more guidance. Physicians enjoy giving personalized information so that you may make informed healthcare decisions.

There is no end to what is on people’s minds. Be bold. Will tucking reduce my sperm count? Maybe. Does binding my breasts come with risk? Likely. Was Shangela robbed of her RuPaul’s Drag Race: All Stars 3 crown? Utterly, but let’s get back to your cholesterol, shall we?

Remember that it is often impossible to squeeze everything into one appointment. Afterward, take time to catch your breath, reflect on what you’ve learned, and come up with more questions for next time. We’re here for that.

About the Author

photo of Cecil R. Webster, Jr., MD

Cecil R. Webster, Jr., MD, Contributor

Dr. Cecil R. Webster, Jr. is a child, adolescent, and adult psychiatrist in Boston. He is a lecturer in psychiatry at McLean Hospital and Harvard Medical School, and consultant for diversity health outreach programs at the … See Full Bio View all posts by Cecil R. Webster, Jr., MD

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Inflammatory bowel disease and family planning: What you need to know

photo of a pregnant person in an examination room speaking with a gynecologist, who is holding a tablet and showing it to the patient

Inflammatory bowel disease (IBD) is commonly diagnosed when people are in their 20s and 30s, which is also when many people are planning families. Many people who have been diagnosed with IBD (which includes Crohn’s disease and ulcerative colitis) have questions and concerns regarding their fertility, conception, pregnancy, delivery, and breastfeeding.

Thinking about conceiving a child or becoming pregnant?

It is important to make sure that your IBD is well controlled, ideally before you begin trying to have a biological child. This is equally important for patients with male and female reproductive anatomy.

Patients with female reproductive anatomy who conceive in remission tend to remain in remission throughout their pregnancy. Research shows that poorly controlled IBD can lead to decreased fertility, and pregnancy can be complicated by premature loss, preterm labor, low birthweight, and small for gestational age babies.

You may require blood work, imaging, or endoscopy prior to conception to get an idea of whether you have an actively inflamed bowel before pregnancy. Your doctor may also modify your medications to ensure that your disease is as well controlled as possible.

You will require care from different types of health care providers during pregnancy, in addition to a gastroenterologist with expertise in IBD. Depending on the history and severity of your IBD, you may benefit from having a high-risk maternal fetal OB/GYN, colorectal surgeon, pharmacist, IBD nurse, psychologist, or nutritionist as part of your care team.

What should I do before I start trying to conceive or become pregnant?

It is recommended to take a prenatal vitamin and/or folic acid supplement. Vitamin D deficiency is common in IBD, and if your levels are low your doctor may recommend supplementation. It is also important to be up to date on your vaccines and review your medication list with your doctor.

Will I need to change my treatment before conception or pregnancy?

Many IBD medications have favorable safety profiles during conception and pregnancy. However, there are some medications that may impact fertility (such as by decreasing sperm count) or that may be unsafe to continue during pregnancy. For example, it is generally recommended to stop taking the drug methotrexate three months before conception.

As newer drugs are developed, research about the safety of IBD treatments continues. It is important to discuss your medications and any concerns you may have during the pregnancy planning period.

How will I be monitored during pregnancy?

Your gastroenterologist will carefully monitor your symptoms during preconception, pregnancy, and postpartum. You may be asked to provide stool samples to assess fecal calprotectin levels (a marker of inflammation measured in the stool), which can help your doctor monitor IBD activity prior to conception and during each trimester of your pregnancy.

Drug levels of certain IBD medications may be monitored via blood work as well, to ensure proper medication dosing. Monitoring and managing IBD throughout pregnancy is individualized for each patient, and the goal is to increase the chances of a healthy outcome for both you and your baby.

What if I have an IBD flare while pregnant?

During an IBD flare in pregnancy, the goal is to rapidly decrease inflammation and optimize an IBD treatment regimen in order to avoid complications for you and your and baby. This may involve drug level monitoring, adjusting medication dosage, or switching medication types. A short course of steroid medications may be needed in certain cases.

If your blood work indicates iron deficiency anemia (which can be caused by inflammation in the GI tract, but can also occur in pregnancy due to increased iron requirement for the baby), iron supplements, either oral or intravenous, can be used to improve blood counts.

What are my options for delivery?

Most people with IBD can deliver via their preferred method. The decision to have a vaginal or cesarean section delivery sometimes depends on a patient’s medical history. If a patient has Crohn’s disease and active perianal disease, a cesarean section may be recommended. This is because active perianal disease increases the risk of severe tears and trauma to the perineal area (area around the anus and vagina).

Patients with a history of steroid exposure and bone complications (like osteoporosis) may want to avoiding pushing during a vaginal delivery. A cesarean section may also be recommended if there are significant risk factors for injury to the perineal area, or an obstetric complication unrelated to Crohn’s or ulcerative colitis.

What happens after I give birth?

After delivery, it’s important to continue IBD medications. Approximately one-third patients will have an IBD flare within a year following delivery. Patients with poorly controlled IBD during the third trimester or while in de-escalation of therapy (reduction in medications) during or after pregnancy are at the highest risk for a postpartum flare. For this reason, it is important to maintain close follow-up with your IBD doctor during this time.

Can I breastfeed/chestfeed?

Breastfeeding/chestfeeding has many benefits for both the postpartum person and infant. Many IBD treatments have favorable safety profiles for breastfeeding/chestfeeding. Some newer biologic medications have not yet been studied well. Your doctor will discuss the risks and benefits of your individualized IBD treatment to ensure your regimen and breastfeeding goals are both optimized.

Will my baby have IBD?

While there is a genetic component to IBD, there is usually a low risk of IBD for biologic children of IBD patients. First-degree relatives (and in particular, siblings) of people with IBD do have an increased risk of Crohn’s disease and ulcerative colitis.

The bottom line

It is important to discuss family planning goals with your doctors early, so they can help you optimize your health and focus on achieving remission prior to conception. Fortunately, many IBD medications are considered safe and effective during conception, pregnancy, and postpartum. During pregnancy, proactive monitoring and early treatment of flares is essential. Every pregnancy is different, and close communication with your medical team is important to keep you and your developing baby healthy.

About the Authors

photo of Loren Rabinowitz, MD

Loren Rabinowitz, MD, Contributor

Dr. Loren Rabinowitz is an instructor in medicine Beth Israel Deaconess Medical Center and Harvard Medical School, and an attending physician in the Inflammatory Bowel Disease Center at BIDMC. Her clinical research is focused on the … See Full Bio View all posts by Loren Rabinowitz, MD photo of Nisa Desai, MD

Nisa Desai, MD, Contributor

Dr. Nisa Desai is a practicing hospitalist physician at Beth Israel Deaconess Medical Center, and an instructor in medicine at Harvard Medical School. She completed undergraduate education at Northwestern University, followed by medical school at the … See Full Bio View all posts by Nisa Desai, MD

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HEALTH NATURAL-BEAUTY SPORTS

Corneal transplants becoming more common

A cross section of an anatomical model of the eye against a black background; the clear plastic dome of the cornea shows on the left

At one time, replacement parts for the eyes must have seemed unimaginable. Nowadays, if the inner lens of the eye becomes clouded by a cataract, a routine surgery to swap it out with a new artificial lens restores vision.

But what happens if the outer lens of the eye (the cornea) becomes damaged or diseased? You can have that replaced, too. “It’s not as common as cataract surgery, but many people get corneal diseases after age 50 and may need a corneal transplant,” says Dr. Nandini Venkateswaran, a corneal and cataract surgeon at Harvard-affiliated Massachusetts Eye and Ear.

More than 49,000 corneal transplants occurred in 2021 in the US, according to the Eye Bank Association of America.

What is the cornea?

The cornea is a dome of clear tissue at the front of each eye, covering the iris and pupil, that acts as a windshield that protects the delicate eye apparatus behind it, and focuses light onto the retina, which sends signals that the brain turns into images (your vision).

You need this combo of windshield and camera lens to focus and see clearly. But many things can go wrong within the five layers of tissue that make up the cornea. That can make it hard to see and rob you of the ability to read, drive, work, and get through other activities in your day.

How does damage to the cornea occur?

It may stem from a number of causes:

  • Injuries, such as a fall. “Falls are a big reason for people to come in with acute eye trauma. The cornea can be damaged easily if something pokes it,” Dr. Venkateswaran says.
  • Previous eye surgeries. “Especially for adults who’ve had several eye surgeries — such as cataract and glaucoma surgeries — the inner layers of the cornea can become damaged and weakened with age,” she adds.
  • Illness. Problems like severe corneal infections, or genetic conditions such as Fuchs’ endothelial dystrophy, can cause vision loss.

What are the options for treating corneal damage?

Cornea treatment depends on the type of problem you have and the extent of the damage. “It’s a stepwise approach. Sometimes wearing a specialty contact lens or using medications can decrease swelling or scarring in the cornea,” Dr. Venkateswaran says.

When damage can’t be repaired, surgeons can replace one or a few layers of the cornea (a partial-thickness transplant), or the whole thing (a full-thickness transplant).

The vast majority of transplants come from donor corneas that are obtained and processed by eye banks throughout the US. In some instances, such as when repeated transplants fail, an artificial cornea is an option. Recovery after corneal surgery can take up to a year.

How long-lasting are corneal transplants?

There’s always a risk that your body will reject a corneal transplant. It happens about a third of the time for full-thickness transplants. It occurs less often for partial-thickness transplants. Preventing rejection requires a lifetime of eye drops.

Still, transplant longevity varies. “I’ve seen transplants from 50 or 60 years ago and now they’re starting to show wear and tear. Other patients, for a variety of reasons — immune system attacks, intolerance to eye drops, or underlying conditions — may only have a transplant for five to 10 years before they need another,” Dr. Venkateswaran explains.

Preventive eye care can help preserve the cornea

It’s crucial to get regular comprehensive eye exams to make sure your corneas and the rest of your eyes are healthy.

The American Academy of Ophthalmology recommends a comprehensive (dilated) eye exam

  • at age 40
  • every two to four years for people ages 40 to 54
  • every one to three years for people ages 55 to 64
  • every one to two years for people ages 65 and older.

You’ll need an eye exam more often if you have underlying conditions that increase your risk for eye disease, such as diabetes or a family history of corneal disease.

If you have any vision problems, such as eye pain, redness, blurred vision despite new glasses, or failing eyesight, see an eye doctor.

Fortunately, for people who do experience corneal damage, advances in surgical options are encouraging.

“Corneal transplants are a miracle,” Dr. Venkateswaran says. “I have patients whose quality of life was significantly decreased because they couldn’t see through their cloudy windshield. We can give them sight again, and we have the technology and medications to keep the transplant alive.”

About the Author

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Heidi Godman, Executive Editor, Harvard Health Letter

Heidi Godman is the executive editor of the Harvard Health Letter. Before coming to the Health Letter, she was an award-winning television news anchor and medical reporter for 25 years. Heidi was named a journalism fellow … See Full Bio View all posts by Heidi Godman

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HEALTH NATURAL-BEAUTY SPORTS

Poliovirus in wastewater: Should we be concerned?

The tip of a pink highlighter pen running over the word "Polio;" a few words from a definition of the illness are also shown

Polio is a potentially life-threatening or disabling illness that spreads from person to person. Thanks to vaccination, the United States has been polio-free since 1979, and the spread of this highly contagious disease has been interrupted in most countries. Yet on June 22, the United Kingdom Health Security Agency announced that it had detected poliovirus in a most unexpected place: the sewers of London.

Over the past several months, scientists at the agency repeatedly found poliovirus in London sewer water. The viruses were genetically similar, suggesting that they were the result of limited spread within a family or close-knit community. Just how concerned should all of us be about this news?

Health clues found in wastewater

Sampling of wastewater for genetic material from viruses is a powerful tool used by epidemiologists to track outbreaks of polio and other diseases. Surges in the amount of SARS-CoV-2 RNA in Boston wastewater have been highly predictive of COVID outbreaks. Wastewater may also help to detect the spread of influenza and antibiotic-resistant bacteria.

Poliovirus infection was once a common and dreaded disease. Most people with poliovirus either had no symptoms or mild gastroenteritis (stomach flu). But one in 100 people developed paralysis, or poliomyelitis. In half of the affected patients, this paralysis was permanent.

In the UK, wild poliovirus has been eliminated since 1984. Although great progress has been made in many parts of the world, complete eradication of polio has been elusive. Pakistan and Afghanistan have never been free from wild-type polio, and outbreaks have recently taken place in Malawi and Mozambique, countries which had previously eliminated polio.

The reasons for this backsliding are complex. Some contributing factors are diversion of scarce resources toward the COVID-19 pandemic, backlogs in vaccine manufacturing, anti-vaccine agitation, and violence directed at vaccine workers.

Another problem is vaccine-derived poliovirus. In the United States and most other countries, injections containing killed viruses are used. While these vaccines are safe, they are less effective than oral vaccines at breaking the chain of polio transmission. Oral vaccines stimulate long-lived immune responses in the lining of the intestines, where polioviruses replicate. Unfortunately, oral vaccines contain weakened but live viruses, which occasionally revert to a more dangerous form. In fact, the poliovirus found in London was a vaccine-derived strain that the infected individual had likely acquired from travel abroad.

Who is at risk for poliovirus stemming from this source?

Vaccine-derived viruses pose little risk to highly vaccinated populations, but they are able to spread in communities with low polio vaccination rates. In some cases, this can even cause paralytic disease. Because of these risks, steps are being taken to gradually phase out the use of oral polio vaccines.

If you’re concerned about polio, the best protection against this disease is vaccination. Children should receive a full series of four shots of inactivated polio vaccine, given at specific intervals, that helps with developing immunity.

Nationwide, rates of childhood polio vaccination in the United States are still high (nearly 93%). However, some infectious disease experts worry that the weakening of vaccine mandates in some areas has created islands of vulnerability in this sea of immunity. Communities in the US with low childhood vaccination rates have been vulnerable to large measles outbreaks in recent years, and might also be vulnerable to polio outbreaks.

With few exceptions, adults who were fully vaccinated as kids do not need booster shots. These exceptions include travel to a country with active polio transmission, laboratory work with poliovirus, or providing health care to polio patients and their close contacts. A single lifetime booster dose of inactivated polio vaccine is adequate for these high-risk scenarios.

About the Author

photo of John Ross, MD, FIDSA

John Ross, MD, FIDSA, Contributor

Dr. John Ross is an assistant professor of medicine at Harvard Medical School. He is board certified in internal medicine and infectious diseases, and practices hospital medicine at Brigham and Women’s Hospital. He is the author … See Full Bio View all posts by John Ross, MD, FIDSA

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HEALTH NATURAL-BEAUTY SPORTS

Thunderstorm asthma: Bad weather, allergies, and asthma attacks

photo of a stormy night sky with multiple flashes of lightning spiking down from dark clouds over city lights and a blurry line of highway lights

It’s an old line: everyone complains about the weather but no one is doing anything about it.

But if you’re a person with bad allergies or asthma, stormy weather can be more than an annoyance; it can be a serious threat to your health. “Thunderstorm asthma” was first reported in the 1980s in England and Australia, and cases continue to crop up. Just after severe thunderstorms passed through Melbourne, Australia in 2016, more than 9,000 people sought urgent medical care for asthma during one notable event. Medical facilities were overwhelmed and at least eight people died. That’s unusual, but if you do have asthma — or seasonal allergies, as it turns out — understanding this trigger can help you stay well.

What is thunderstorm asthma?

The term describes an attack of asthma that starts or worsens after a thunderstorm. It can occur in anyone with asthma, but it most often affects people with seasonal allergic rhinitis, which many people know as hay fever or allergies. Heralded by a runny nose, sneezing, and itchy eyes, seasonal allergies are often worst in the spring, summer, or early fall.

Rain tends to lower pollen counts by cleansing the air, and many people find that rainy weather tends to reduce asthma symptoms triggered by allergies. But thunderstorms can make asthma worse because of a unique sequence of events:

  • Cold downdrafts concentrate air particles, such as pollen and mold
  • These air particles are swept up into clouds where humidity is high
  • In the clouds, wind, humidity, and lightning break up the particles to a size that can readily enter the nose, sinuses, and lungs
  • Wind gusts concentrate these small particles so large amounts can be inhaled.

What raises risk for experiencing thunderstorm asthma?

According to a new study in the Journal of Allergy and Clinical Immunology, a whopping 144 out of 228 people with seasonal allergies reported experiencing thunderstorm asthma — that’s 65%! And many of the asthma attacks set off by thunderstorms weren’t mild. Nearly half of people who had an attack sought emergency hospital treatment.

Among people with seasonal allergies, risk factors for experiencing thunderstorm asthma include having

  • poorly controlled asthma symptoms (assessed by a standard asthma questionnaire)
  • a low score on a rapid exhalation test (a common breathing test for asthma)
  • higher levels of a certain antibody (ryegrass pollen-specific IgE)
  • higher numbers of certain blood cells (eosinophils, which tend to increase when people have allergic conditions)
  • higher levels of exhaled nitric oxide (one measure of lung inflammation among people with asthma).

Not everyone with these risk factors will develop thunderstorm asthma. And even among those who do, asthma attacks won’t necessarily occur with every storm. But it may be useful to know if you’re among those at risk, especially if you live in an area where thunderstorms are common.

The bottom line

Thunderstorm asthma may seem like more of a curiosity than a serious threat to public health. But when it affects a large population area, emergency rooms can become overwhelmed, as happened during the 2016 Melbourne event. A better understanding of when these events are expected could lead to advanced warning systems, enhanced emergency room preparedness, and even preventive treatment.

In the US, 25 million people have asthma and more than 20 million have seasonal allergies. Odds are good that millions have both, which puts large numbers of people at risk for developing thunderstorm asthma.

If you’re among them, the weather forecast may be much more than just a guide on what to wear or whether to bring an umbrella. Knowing thunderstorms are headed your way may serve as an advance warning to double check that you are taking your asthma medicines properly, have a supply of rescue medicine handy, or simply plan to stay indoors until the storm has passed.

About the Author

photo of Robert H. Shmerling, MD

Robert H. Shmerling, MD, Senior Faculty Editor, Harvard Health Publishing

Dr. Robert H. Shmerling is the former clinical chief of the division of rheumatology at Beth Israel Deaconess Medical Center (BIDMC), and is a current member of the corresponding faculty in medicine at Harvard Medical School. … See Full Bio View all posts by Robert H. Shmerling, MD