Learn what it means to have "normal" blood pressure and how to recognize what your individual blood pressure numbers mean. Includes guidelines from The American Heart Association.

Hydrogen sulfide is a compound with the molecular formula H2S. It's colorless, flammable, toxic and extremely malodorous. Hydrogen sulfide is perhaps best known as the chemical that gives rotten eggs their unforgettable odor. In trace concentrations, it's unpleasant and nothing more, but at higher l

Types of CholesterolThere are actually two types of cholesterol. LDL (Low density lipoprotein) is "bad" while HDL (high density lipoprotein) "good." Both are made and used by the body in adequate amounts, making it unnecessary to have high-cholesterol foods in our diet. The medical...

Sickle cell anemia is an inherited disease that creates C-shaped red blood cells. When your blood cells are normal, they are circular in shape. Because of a normal cell's shape, it can pass easily through your blood vessels. However, with a sickle cell, the blood cell is hard and sticky. As a result