LOS ANGELES, Dec. 28 (UPI) -- More than half a million adults in California say they seriously thought about committing suicide during the previous year, researchers say.

Researchers at the University of California-Los Angeles Center for Health Policy Research used data from the 2009 California Health Interview Survey and found gay, lesbian and bisexual Californians were more than three times as likely as all adults to have seriously thought about suicide during the previous year.