Adult smokers with bipolar disorder and schizophrenia drink the most caffeine, report researchers. There may be health consequences.

The first cigarette of the day and a cup of coffee might be more than just a habit. Compounds in coffee beans may lighten the effects of nicotine cravings.

Drinking a limited amount of coffee during pregnancy does not increase risk of miscarriage, stillbirth, or premature birth, a new study shows.

Drinking a limited amount of coffee during pregnancy does not increase risk of miscarriage, stillbirth, or premature birth, a new study shows.

People who drink at least one cup of coffee every day may have a lower risk of developing acute kidney injury, a new study shows.

Drinking up to 100 mg of caffeine a day during the second trimester of pregnancy was associated with a 47% reduction in gestational diabetes risk.

A new study finds no association between consuming caffeine in tea or coffee and invasive breast cancer in postmenopausal women.

You probably shouldn't rely on caffeine to counteract the effects of sleep deprivation, researchers report. It won't help you perform tasks without errors.

New research finds that caffeine consumed during pregnancy can affect the development of fetal brains. The changes can lead to behavioral problems later.

Some energy drinks may contribute to dangerous heart conditons, including improper beats, cardiomyopathy, and increased blood pressure, researchers report.