(Corvallis, OR)  --  Oregon State University is out with some new research suggesting that kids who are gay, lesbian, or bisexual are at a higher risk of substance abuse.  OSU says that youth who are in that sexual minority have reported nearly three times more substance abuse than those who are heterosexual.  An assistant professor at the school says this may be because of stress from discrimination, violence and victimization.  She suggests health care providers begin doing substance abuse screenings on youth who define themselves as gay, lesbian, or bisexual.