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Author Question: If a president has faced persistent opposition to his or her policy agenda in Congress, which ... (Read 51 times) |
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.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.