Vitamin A has a number of uses in the body, including the promotion of healthy teeth and skin.

The numbers of brands of e-cigarette devices and products are large and rapidly increasing as internet sales remain strong in a largely unregulated nicotine delivery system, a new survey finds.

A review of data from 43 studies shows that the risk of certain types of cancer goes up eight to 10 percent for every two hours a day spent sitting.

Spending long periods in front of a computer monitor may be associated with symptoms almost identical to dry eye disease.

Being bullied about her size led her to embrace dangerous habits to lose weight; now, she speaks out about her battles.

Boys and girls experience different changes in blood pressure and heart rate after drinking a caffeinated beverage.

Lymphoseek can now be used by doctors to test lymph nodes for cancer in cancer patients with tumors in the head and neck region.

The study is the first of its kind to look at the effects of processed red meats separately from unprocessed red meats.

Childhood cancer survivors tend to have more medical problems years after treatment, according to a new study.

Diabetes is a disease in which a person’s blood glucose, or blood sugar, levels are too high.