The " " sparkles emoji is one of the most popular, but do you know what it really means?

Caffeine can kick start your senses within 15 minutes. See exactly what caffeine does to your body with this interactive graphic.

High cholesterol typically doesn't cause any symptoms. In the majority of cases, the only symptoms it may cause are emergency events.

Medical news, education and information for physicians and health care professionals, presented by specialty and topic. From Healio and the Wyanoke Group.