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Your body mass index, or BMI, may not be an accurate indicator of your risk of heart disease or diabetes, new research finds.

People with brain injuries may have a buildup of the same plaques in their brains seen in people with Alzheimer's disease, a small, new study suggests.

Can getting rid of certain cells lead to a longer life?

Health officials released an update to the schedule of vaccines recommended for children.

Eating lots of fiber during the teen and early adulthood years may play a role in llowering breast cancer risk later in life, a new study suggests.

Working out more does not necessarily translate into burning significantly more calories, a new study finds.

Children born to women with obesity and diabetes may have an increased risk of autism, a new study suggests.

Using reminders on your smartphone could prompt you to get moving.

Antibiotics called macrolides may change children's gut bacteria, a new study finds.

Migraine sufferers might benefit from using medical marijuana -- a new study shows the drug might lead to fewer of the painful headaches, a new study suggests.

Kids whose parents have "unsecured debt" may have more behavior problems, a new study finds.

People who use opioid medicines for pain may face a higher risk of depression, a new study finds.

To prevent heart disease deaths, people may want to focus more on eating more unsaturated fat, rather than eating less saturated fat, a new study suggests.

Women who develop the skin cancer melanoma during pregnancy may have more aggressive cases of the cancer, a new study suggests.

Smoking pot doesn't make teens any dumber, a new study finds.

Older adults who don't sleep as well may be at increased risk for changes in their brain, a new study finds.

People who have the intestinal infection called Clostridium difficile may benefit from a "poop transplant" that uses frozen poop instead of fresh poop, a new study suggests.

Babies' gut bacteria may depend in part on what they have been eating, a new study suggests.

Two new studies of potential treatments for Ebola highlight the need find ways to prevent the deadly viral disease.

People who have been overweight at any point in their lives may be more likely to die early, even if they lose weight later, a new study suggests.

Social connections are important for your physical health, new research suggests.

A young man who played football in college had already developed a degenerative brain disease by the time he died at age 25 from a heart problem, according to a new report of his case.

Researchers have invented a heart rate monitor that can stick to your skin, and also store data.

A beer that researchers made using ingredients from kefir may be good for health, a rodent study suggests.