Recent Blog Articles
Do tattoos cause lymphoma?
PTSD: How is treatment changing?
Concussion in children: What to know and do
Ever hear of tonsil stones?
Midlife ADHD? Coping strategies that can help
Ever worry about your gambling?
Color-changing eye drops: Are they safe?
Harvard Health Ad Watch: Got side effects? There's a medicine for that
Packing your hurricane go bag? Make provisions for your health
Does your child need to bathe every day?
Diseases & Conditions Archive
Articles
COVID-19’s effect on care and research
Ask the doctor
Q. I know doctors and scientists are very busy dealing with COVID-19. Is the need to care for, and do research on, COVID-19 affecting the care of and research on other important diseases?
A. You're right: the COVID-19 pandemic has consumed and disrupted medical care and medical research in the United States and around the world.
Should I be screened for hepatitis C?
Ask the doctors
Q. A friend told me that I should be screened for hepatitis C. I'm not in a high-risk group. Is this really necessary?
A. If you're an adult younger than 80 years old, the answer is yes. In March, a government health advisory group, the U.S. Preventive Services Task Force (USPSTF), revised its earlier position and now recommends that all people ages 18 to 79 be screened for this "silent" virus. Prior to this change, the USPSTF recommended only that only high-risk individuals or adults born between the years 1945 and 1965 be screened. Hepatitis C can attack the liver and lead to serious liver damage and liver cancer. The condition is curable if detected. But people often don't consider themselves at risk and are unaware that they are infected, because they typically don't have symptoms.
Choosing the right sunglasses
The easiest way to protect your eyes from the sun's hazardous radiation is to wear sunglasses, not only in the summer months, but year-round. Ultraviolet (UV) light can damage the iris, retina, lens, and cornea, leading to permanent vision loss. It's a good idea to request UV protection (an invisible coating) on all of your prescription glasses.
UV light has three wavelengths:
UVA is long, looks almost blue in the visible spectrum, and is responsible for skin tanning and aging. It may also contribute to skin cancer risk.
Blood test might reveal dementia
Research we're watching
Could a single blood test one day enable doctors to diagnose Alzheimer's disease? Researchers writing in the March 2 issue of Nature Medicine say they've made advances in this area. The blood test they developed measures the concentration of pTau181 — a form of the tau protein associated with brain changes in Alzheimer's disease — in the body's blood plasma. They used the test on samples collected from more than 400 people who were part of an ongoing -memory study.
The researchers found that the blood test was able to accurately detect which patients had Alzheimer's, which were healthy, and which had a different type of dementia caused by a neurodegenerative disease. Today, doctors typically diagnose Alzheimer's using a series of tests designed to rule out other causes, but the process is time-consuming and costly. The researchers are now aiming to refine the test further, in hopes that it will someday make it easier to detect Alzheimer's at an early stage, when the disease may be easier to treat.
Heartburn medication update
New information may affect your approach to treatment.
Millions of people turn to prescription and over-the-counter medications to cope with heartburn from gastroesophageal reflux disease or other stomach conditions. But navigating the risks of heartburn remedies can leave a sour taste in your mouth, since some have been tied to health concerns. Here's what you need to know about two mainstays of treatment, and how the latest developments may affect you.
H2 blockers
Histamine2-receptor antagonists, better known as H2 blockers — such as famotidine (Pepcid) and cimetidine (Tagamet) — are available over the counter or by prescription. They block a chemical that signals the stomach to produce acid, and are the go-to drugs when an antacid like calcium carbonate (Tums) or aluminum hydroxide (Maalox) isn't strong enough.
When should I be concerned about the color of my urine?
On call
Q. When should I worry about changes in the color of my urine? What color is considered healthy?
A. If a person is well hydrated, the normal color of urine is a pale yellow. Someone who drinks large amounts of fluid or takes diuretics (water pills) can have almost clear-looking urine. A dark yellow color may indicate a need to increase your fluid intake.
Hepatitis C screenings now include all adults up to age 79
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News briefs
The guidelines are changing when it comes to screening for hepatitis C, a silent viral infection that attacks the liver and can cause cirrhosis, liver cancer, or liver failure. Back in 2012, the CDC recommended a one-time hepatitis C screening for the so-called baby boomer generation (anyone born between 1945 and 1965), a group that made up about 75% of all hepatitis C cases at that time. The following year, the U.S. Preventive Services Task Force (USPSTF) agreed. Now the USPSTF is expanding the screening age to all adults ages 18 to 79. The move is meant to identify more people in early stages of infection and comes as hepatitis C cases have increased almost fourfold since 2010. The USPSTF also advises screening for people outside of the recommended age range if they have ever used injected drugs. The recommendations were published online March 2, 2020, by JAMA. The CDC is in the process of developing similar recommendations. The screening requires only a simple blood test.
Image: jarun011/Getty Images
On the spot
What does that skin spot or growth mean, and when should you have it checked?
Even if you're diligent about sun protection (and you should be), you can still develop skin spots, growths, or other abnormalities.
But are they always cause for concern, or just a normal part of aging skin?
Digestive tract bleeding may signal colon cancer in people taking blood thinners
In the journals
Bleeding is a common side effect of anticoagulants (blood thinners). However, people with atrial fibrillation (afib) who take the drug for stroke prevention should not ignore any bleeding from their lower gastrointestinal (GI) tract, as it may signal colon cancer. That study finding was published online Feb. 7, 2020, by the European Heart Journal.
Researchers analyzed 125,418 patients who took anticoagulants for afib. Only 2,576 had lower GI bleeding during the first six months of treatment, regardless of age. Yet those who did experience bleeding had 10 times the risk of being diagnosed with colon cancer during the subsequent year compared with those who hadn't had any bleeding.
The lowdown on eye exercises
If you wear glasses or contacts, chances are you've been at least a little bit tempted to investigate the infomercials and books promoting eye exercises to improve your eyesight without surgery. Some programs even claim that faithful adherents may be able to give up their glasses. If this sounds too good to be true, that's because it is.
Purveyors of self-directed eye exercise programs have not conducted randomized trials to verify the effectiveness of their programs, and there is no medical evidence for their oft-stated claim that wearing lenses weakens the eyes and necessitates ever-stronger prescription eyewear. Furthermore, some programs are based on ideas that don't quite square with the anatomy and physiology of vision.
Recent Blog Articles
Do tattoos cause lymphoma?
PTSD: How is treatment changing?
Concussion in children: What to know and do
Ever hear of tonsil stones?
Midlife ADHD? Coping strategies that can help
Ever worry about your gambling?
Color-changing eye drops: Are they safe?
Harvard Health Ad Watch: Got side effects? There's a medicine for that
Packing your hurricane go bag? Make provisions for your health
Does your child need to bathe every day?
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