Roban Johnson

Researchers at Mercer University School of Medicine, in collaboration with University of Georgia scientists, have uncovered a link between hypertension and plasma endothelin levels -- a link that may explain why hypertension is so prevalent among African-Americans and might ultimately lead to better treatment of this disease that affects more than 50 million Americans each year.

If you enjoy a glass of grapefruit juice with your morning breakfast, be aware that it may interfere with some of the medicine you take. This citrus juice contains a substance that affects the liver's ability to metabolize a number of different drugs. The result is a build-up of the medication in your body -- in effect, an overdose.

As a 40-something female with a family history of heart disease, it's a little frightening to know that heart disease is the leading cause of death in women over the age of 25. In fact, one in five women in the United States has some form of cardiovascular disease, and two out of every six women will die from either heart disease, stroke or other cardiovascular diseases.