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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The familiar sounds of your heart are made by the heart's valves as they open and close.
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.