PHILADELPHIA, Aug. 12 (UPI) -- Most U.S. adults would not choose to undergo medical treatments to slow the aging process and live to be 120 or more, a survey indicates.

Pew Research Center researchers said there is, at present, no method of slowing the aging process to live to ages 120 or more, but by 2050, 1-in-5 U.S. adults will be 65 or older, and at least 400,000 will be 100 or older in 2050. Some say medical treatments might result in slowing the aging to 120 and older by 2050.

TEL AVIV, Israel, July 23 (UPI) -- Children who are breastfed may have less risk of attention-deficit hyperactivity disorder, researchers in Israel suggest.

WASHINGTON, July 23 (UPI) -- The U.S. Food and Drug Administration is seeking additional information to help the agency make informed decisions about menthol in cigarettes, officials say.

ABINGDON, England, July 14 (UPI) -- Cancer immunotherapy -- using the body's own immune system to fight tumor cells -- may be a major part in a cure for cancer, researchers in Britain say.

WASHINGTON, July 11 (UPI) -- Many state-run health insurance exchanges will provide distinct plan choices exceeding the Affordable Care Act's minimum requirements, U.S. researchers say.

GAINESVILLE, Fla., June 10 (UPI) -- Thirty-five percent of people in U.S. bars who said they were designated drivers had blood-alcohol levels high enough to impair their driving, researchers say.