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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.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.