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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.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
In 1864, the first barbiturate (barbituric acid) was synthesized.