Over the past decade or so, sigmoidoscopy has been largely abandoned by doctors in the U.S. in favor of colonoscopy to detect and prevent colon cancer. But sigmoidoscopy is easier on patients and is also effective in finding precancerous polyps.
From 20 to 42 percent of the malaria medicines examined in Southeast Asia and sub-Saharan Africa were crummy or counterfeit. The poor quality of the medicines threatens people's health and raises the odds for drug-resistant disease.
Faced with growing shortages of organs, a majority of Americans in an NPR-Thomson Reuters poll say they favor compensating donors in specific circumstances. Federal law currently bans any form of payment and many doctors worry about issues of fairness, exploitation and access.
One in 1,000 men could be saved by prostate-specific antigen screening, but many more will undergo unnecessary--and often dangerous--treatments as a result. So says a task force that recently recommended doing away with routine prostate screening tests.
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