U.S. government analysis also found 15 percent had three or more problems

While more than half had experienced a potential symptom, only 2 percent thought malignancy possible

Limiting screening to women with family history, dense breasts would miss many cancers, researchers find

Homo sapiens' ape ancestors long ago developed ability to eat fermented fruit, study suggests

DNA from recently discovered remains is giving historians details on the long-dead king

Injection boosted immune response, seemed to slow spread in those with advanced disease

Reason for benefit unclear, more research is needed, study author says

Taking blood sugar-lowering medications can also help, researchers say

New guidelines emphasize how effective and safe the injection is

CDC report also finds surge in heroin-related overdose deaths