Harvard Health Blog

If you work out at a gym, you may notice warnings on the exercise equipment. For most of us, these warnings should not be cause for alarm, although people with certain health conditions should be cautious about exercising.

Summer has arrived in the Northern Hemisphere, along with higher temperatures that put a stress on the body. Here's why it's more important than ever to have a personal heat plan.

Prostate cancer is generally viewed as a disease of older men, yet about 10% of new diagnoses occur in men age 55 or younger. Biological differences partially explain the discrepancy, but socioeconomic factors also play an important role.

As devices become more pervasive, and as many children become more scheduled with lessons and organized activities, making time for device-free play can be a challenge. Here's why it's important prioritize free play in a child's life.

An ad for a medication to treat thyroid eye disease accurately describes the symptoms of the condition, but as is common with such ads it does not discuss other possible treatment options, or other information that people should be aware of.

What drives forms of self-harm like cutting that some teens engage in? Gaining an understanding of why some children harm themselves by cutting their skin, what signs to be aware of, and how to approach the subject can help parents respond if this occurs.

A new study finds that experiencing discrimination in the workplace—where many adults spend one-third of their time, on average—may be harmful to heart health.

Life would be extremely difficult for humans if we didn't have elbows, yet when it comes to joints we hear very little about them. So let's consider what the elbows do for us and why we should do all we can to protect them.

Allergy season is longer and more intense this year—causing sneezing, and itchy eyes in millions of people. But allergies also affect the brain, causing symptoms like brain fog. Here are some ways to prevent or ease brain fog from allergies.

While the FDA rules for blood donation were revised twice in the last decade, one group — men who have sex with men — continued to be turned away from donating. Now new, evidence-based FDA rules will focus on individual risk rather than groupwide restrictions.

Swimming is a great activity for children, but for children with the allergic skin condition known as eczema, swimming can be complicated. Taking steps to protect skin before and after a swim can help.

Muscle dysmorphia is a preoccupation with a muscular and lean physique that is more pervasive in boys. Learn the signs of body dysmorphia as well as ways to encourage positive body image.

Dementia poses many challenges, both for people struggling with it and for those close to them. Understanding common behaviors and learning to handle situations that arise can help families and caregivers.

While Lyme disease is the most commonly reported tick-borne illness in the United States, a report from the CDC shows that ticks that cause babesiosis are appearing in more parts of the Northeast and Midwest.

Lead poisoning is a serious health risk for children. And yet, they may be exposed to lead in their daily lives. Learn the dangers of lead exposure and what you can do to keep your child safe.

Men who are diagnosed with certain types of prostate cancer often choose active surveillance, which allows them to delay the need for aggressive treatment. The results of a long-term study affirm that this approach is a valid option for managing the disease.

It's easy to blame running when a person who runs regularly develops arthritis. But that blame may be misguided. Here's a look at the latest research on the topic.

For people with obesity, weight-loss surgery can reverse or greatly improve many serious health issues, but also leaves people more likely to develop an alcohol use disorder. A new study finds that one type of surgery may increase the dangers of drinking much more than other weight-loss strategies.

Ovarian cancer, which claims about 13,000 lives each year, is hard to detect in early stages. Recent guidance from professional groups recommends removing fallopian tubes to help prevent ovarian cancer if women are undergoing gynecologic surgery and are finished with childbearing.

As the impacts of climate change on Earth threaten our well-being, the concept of planetary health acknowledges that the ecosystem and our health are inextricably intertwined. While individual efforts may seem small, here are five small steps that help make a difference when taken collectively.

The FDA authorized a brand of smokeless tobacco to use language in its advertising claiming that using snuff reduces risk of lung cancer compared to smoking cigarettes. Technically this is true, but it's not the health advantage the product's maker would like consumers to think it is.

Miscarriage describes a pregnancy loss before 20 weeks. It happens in as many as one in three pregnancies, although the risk gradually decreases as pregnancy progresses. What causes miscarriage? How is it treated? And why is appropriate health care for miscarriage under scrutiny?

Celebrities and influencers claim that consuming collagen could have miraculous benefits for skin, hair, and nails. But what does the science say?

More physical activity and less time watching TV is best for the body. But how does television time affect risk for declines in memory and problem-solving ability or risk for developing dementia? Researchers have been digging into these questions.