Harvard Health Content API

Recent news reports about cases of polio have some parents concerned about the illness. The vaccine is safe and remarkably effective, and widespread vaccination builds herd immunity.

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.

An estimated 7% of Americans have an autoimmune disorder, and these tend to disproportionately affect women. Expert guidelines can help with questions about the best birth control options for people with lupus and other autoimmune diseases.

Summertime offers a great variety of fresh vegetables. Making vegetables the focus of a meal has many health benefits, and anyone can take advantage of this by preparing them in simple yet delicious ways.

Digestive troubles are no one’s idea of fun, but having them occur while traveling or vacationing is even worse. Here’s a closer look at three common digestive upsets, how to prevent them, and what to do if you have one.

It's hard to accurately predict when new viral outbreaks will appear or old viruses will reappear and how to figure this out quickly enough to respond quickly. Wastewater testing, a tool that can help predict upticks in COVID cases, has also captured evidence of infectious diseases like polio, allowing preventive measures to be taken.

After a man has had a radical prostatectomy, sometimes the level of the antigen PSA rises again later, meaning cancer may have returned. A study found that the normal therapy given when this happens is more effective when combined with other forms of treatment.

Intermittent fasting is limiting the window of time each day when a person eats. It has become popular as a weight loss tool, so people want to know if it’s effective and whether it can work for them, and a recent study attempted to provide some answers.

A new study found a higher risk of melanoma among people who ate the most fish, but limitations of this research mean it’s premature to draw any conclusions about a relationship between eating fish and melanoma risk.