Harvard Health Blog

When a PSA test produces an abnormal result, the next step is usually a prostate biopsy, but these have drawbacks. Researchers are exploring strategies to avoid unnecessary biopsies, and a test that screens for prostate cancer in urine samples has shown promising results in testing.

One condition affecting the hands and fingers is Dupuytren's contracture, where one or more fingers become curled, making it difficult to perform everyday activities. Dupuytren's affects one in 20 Americans, so what do people need to know about it?

A healthy diet is key to a healthy gut microbiome, which helps the immune system function well and reduces chronic inflammation among other important tasks. And increasing evidence suggests that fiber and fermented foods can play important roles in gut health.

It can be frustrating to be asked to fill out medical forms yet again for a health care visit. But even if you have an electronic medical record, a practice might need you to provide or update information, and it's helpful to know what is most important or likely to be requested.

Trees enhance our lives by releasing oxygen, reducing pollution, and preventing flooding. Beyond all of these benefits, there is growing evidence that just being around trees and green spaces improves mood and overall health.

A new type of nonhormonal medication to prevent hot flashes and night sweats due to menopause, Veozah, was approved by the FDA in 2023. An ad for the drug has useful information, but some key questions are not answered.

Concussion is one of the most common injuries to the brain, affecting about two million children and teens every year. Understanding signs, symptoms, questions to ask, and how concussion care has changed in recent years can make a difference in identifying concussion and recovery.

Most people have four parathyroid glands, which are tiny in size but very important to the body's function. These glands are involved in regulating calcium, phosphorous, and vitamin D, keeping these nutrients in balance without being noticed by us.

Co-regulation is a process in which caregivers can help young people learn better ways to regulate their emotions during the inevitable upsets and challenges of life. But before a caregiver can help a child, they need to understand their own emotional skills and limitations. 

More than 4.5 million dog bites occur in the US each year. Despite what you might expect, most of these are inflicted by a pet dog in a home. Learn more about how you can avoid injury, and what to do if you do get bitten.

When a study asked doctors and artificial intelligence to respond to selected patient questions, a chatbot received higher ratings for empathy and quality. But a closer look at the research spotlights important limitations and findings.

With climate change, rising temperatures are making many regions dry within the US and beyond. The effects of droughts on the planet and our health are complex, and include water shortages, higher risk of disease, changes in habitability, and worse air quality.

It's impossible to never worry about your health — but are you worrying about the right things? Popular fears and Google and TikTok searches suggest our top concerns may bypass common health issues. So what should concern us and what can we do about it?

Dental x-rays have long involved donning lead-lined shields. But new guidelines from the American Dental Association say that using the vest is no longer necessary. What has changed?

Minimally invasive surgery to remove the prostate gland is generally very well tolerated, but there can be complications, as in the case of Defense Secretary Lloyd Austin earlier this year. A Harvard-affiliated urologist answers questions about the possibility of such complications.

Social media and stores are full of products that promise perfect skin. Increasingly these products are being marketed to tweens and teens as well as adults. For the most part tweens and teens do not need specialized skin products — but sometimes they make sense.

Recent changes in laws have made gambling widely accessible and popular. Uncontrolled gambling can have many kinds of consequences, some quite serious. A simple screening test for problem gambling and knowing the range of available resources can help people ward off the worst of these issues.

If you've been cocooning due to winter's cold, who can blame you? But lack of activity isn't good for body or mind during any season. Any day is a good day to start exercising, but if you aren't sure how to start, or if you have an obstacle to overcome, read on.

A new study from the National Institutes of Health has performed more diverse and extensive biological measurements of people experiencing chronic fatigue syndrome than any previous research. Here's what they found and what it means.

New research suggests that people who are hospitalized in an intensive care unit are far less likely to develop pneumonia if their teeth are brushed twice daily. They also need ventilators for less time, are able to leave the ICU more quickly, and are less likely to die in the ICU.

Our internal clocks regulate the sleep-wake cycle, and light establishes when we should feel wakeful or sleepy. Light exposure at night affects these natural processes, so researchers studied whether wearing an eye mask while sleeping might help learning and alertness.

If you've ever tried to lose weight, you've probably heard the advice to drink water before a meal because it makes you feel fuller and you'll stop eating sooner. It seems like a reasonable idea — but does it work? And if it doesn't, why do people think it does?

Until recently, many people with asthma used a medicine called Flovent. It has been discontinued by its manufacturer, leaving users with questions about what to substitute and which medicines their insurance will cover.

Infections after a prostate biopsy are rare, but they do occur. There are two ways to perform such a biopsy, with the one at higher risk of infection more common in the US. Researchers conducted a trial designed to compare the safety of the two methods.