10) MARIJUANA USE HAS NO EFFECT ON MORTALITY: A massive study of California HMO members funded by the National Institute on Drug Abuse (NIDA) found marijuana use caused no significant increase in mortality. Tobacco use was associated with increased risk of death.
9) HEAVY MARIJUANA USE AS A YOUNG ADULT WON’T RUIN YOUR LIFE: Veterans Affairs scientists looked at whether heavy marijuana use as a young adult caused long-term problems later, studying identical twins in which one twin had been a heavy marijuana user for a year or longer but had stopped at least one month before the study, while the second twin had used marijuana no more than five times ever. Marijuana use had no significant impact on physical or mental health care utilization, health-related quality of life, or current socio-demographic characteristics.
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