There are only four seasons so one of them is going to win when it comes to drug use, and it's little surprise that season for teenagers is summer,when kids are not in school.
A recent analysis of survey results found that 34 percent of new LSD initiates first used the drug in the summer. In addition, 30 percent of marijuana, 30 percent of ecstasy (MDMA/Molly), and 28 percent of cocaine use was found to begin in summer months. Since summer is 25 percent of the seasons this is not really compelling insight, but if epidemiologists want to get National Institute of Environmental Health Sciences (NIEHS) funding, they need to find things to hype up.