Anderson Cancer Center in Houston found that the treatment helped doctors diagnosis women who later developed estrogen receptor (ER) negative breast cancer an average of one year sooner than the same at-risk patients who instead took a placebo. "If the relationship between air pollution and appendicitis is confirmed, then improving air quality may prevent the occurrence of appendicitis in some individuals," said lead researcher Dr. They noted that colonoscopy can cause complications such as infection, perforated colon and reactions to sedatives, the Associated Press reported.

Habitat loss and hunting are the major threats facing land mammals, while marine mammals are most threatened by accidental killing through fishing bycatch, ship strikes and pollution. The task force said these tests require more research, the AP reported. The new study included 7,076 men, 45 years old and older, who suffered a hip fracture between 1997 and 2006.