Increase in colonoscopy and other tests was typically seen among poorer, less educated Americans

Many cancer patients mistakenly believe removing both breasts will extend survival, researchers say

They also think vapor is less harmful than secondhand smoke, survey finds

Live Anthrax Sent to 51 Labs in 17 States, plus 3 Other Countries: Pentagon Current Bird Flu Vaccine Ineffective Against Outbreak: USDA

Don't approach one that's sleeping, eating or playing with a toy

And see a dentist regularly

Researchers suspect cells may be trying to evade immune system detection

But study showed it's not enough to prevent related deaths

But conclusion wasn't unanimous, one expert says

Antibiotic treatments may upset body's natural bacteria balance, experts believe