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Women are 50% to 75% more likely than men to experience an adverse drug reaction.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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.
It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.