Almost 15 percent of U.S. adults aged 50 to 80 years are taking aspirin for primary cardiovascular disease prevention, according to a brief report published in the July 1 issue of the Journal of the ...

Medically reviewed by Jurairat J. Molina, MD Caffeine is a substance that raises alertness and boosts energy. Most adults can safely consume up to 400 milligrams of caffeine daily, equivalent to about ...