Harvard Health Blog

By now millions of people around the world have been infected with the virus that causes COVID-19. Some of them have experienced lingering effects like low energy and brain fog; could gastrointestinal problems be another aftereffect of the virus?

An ad campaign sponsored by the milk industry claims that milk is better than water for hydration. A few studies appear to support the claim, but they involved a small number of subjects and have important limitations.

A new study finds that many people with obesity avoid exercising because they fear their weight makes injury more likely. But everyone, at every weight, can find ways to exercise safely, confidently, and joyfully.

Everyone has moments when their brain feels like it’s gone haywire. When these racing thoughts take over the mind can’t stay focused, feeding into a cycle of anxiety. But there are things you can do to break this cycle and regain control.

A survey found many midlife women report turning to cannabis to ease uncomfortable symptoms of perimenopause and menopause, although research evaluating how well this works and long-term safety is lacking.

Loneliness boosts risk for many health problems, and can even contribute to an early death. Many people find it hard to reach out to make new friends, but there are strategies that can help.

The COVID-19 pandemic affected children's developing social skills. Many children either didn’t learn the skills they need to make friends — or those skills got rusty. Here are some ways parents can help.

Therapies using an electric current for brain stimulation are not new, but marketing devices for home use is a relatively recent phenomenon. While claims include better energy, focus, mood and more, current evidence doesn't support this and the FDA hasn't cleared these devices.

Palliative care is a medical specialty meant to help people during many different stages of health. Many people who might benefit from palliative care do not receive it; if more people understand it, more people can take advantage of it.

Parents often think that they would know if their teen was suicidal. However, this is not always the case. Here’s what to be aware of and watch for, and what to do if you see worrisome behavior.

Mounting evidence paints a worrisome picture of the potential health consequences of nontraditional shift work schedules. So how can people who are required to work during the night and sleep during the day protect their health and well-being?

A pre-surgery consultation with the surgeon can feel overwhelming. Many people are anxious and have questions about what’s to come. Setting the right expectations on both sides can ease anxiety and help define a successful outcome.

Ketamine has been used for decades as an anesthetic, and in 2019 an inhaled version of it was approved by the FDA for treatment-resistant depression. But it is generally prescribed only when other treatments have not been effective.

Beverages that promise similar energy perks and health benefits as coffee and tea are growing in popularity. Often marketed as wellness drinks, how do these alternatives stack up nutritionally?

Frontotemporal dementia (FTD) is a brain disorder caused by damage to nerves in certain parts of the brain. It typically affects people in middle age, and is characterized by marked changes in behavior or problems with language.

Proton-pump inhibitors are a commonly prescribed anti-acid medication, but new guidelines from the American Gastroenterological Association recommend that they should be taken at the lowest dose and shortest duration for the condition being treated.

Dementia occurs more often among older people with higher levels of hearing loss than among those with normal hearing. A new study found that wearing hearing aids reduced the risk for dementia in people who had significant hearing loss.

Doctors used to recommend treating all men with prostate cancer; now they are likely to advise active surveillance for lower-risk cancers. But some men require closer monitoring — so how do they determine which ones?

The human heart normally keeps a predictable pace, but occasionally you might notice a sensation that feels like your heart is racing, fluttering, or has skipped a beat. While this can be alarming, it’s usually not a cause for concern.

Infertility affects millions of people worldwide. Chronic inflammation has been linked to many health conditions and some research suggests it might be a contributing factor for some cases of infertility. And if true, would an anti-inflammatory diet or lifestyle boost fertility?

Weight can be a sensitive topic with children and teens, and sometimes a child needs to gain some weight. Checking with your doctor before working on adding weight and emphasizing healthy, high-calorie foods are important.

Cervical cancer is curable when caught early through routine screening, so research showing a surprising rise in advanced cancer cases in some groups is worrisome. Two Harvard experts share insights about the research and advice on how people can best protect themselves.