BOSTON, Jan. 1 (UPI) -- A lack of deep sleep has been linked to less sensitivity to insulin and higher risk of diabetes in a U.S. study of healthy young adults.

SAN FRANCISCO, Dec. 27 (UPI) -- The spreading epidemic of obesity, fed by inactivity and intemperance, took a glutinous bite out of childhood health in 2004.

LAS VEGAS, Nov. 17 (UPI) -- People who get more sleep each night have less risk of becoming obese, according to a Columbia University study to be released Wednesday at a U.S. conference.