High-Potency Pot Doubles Risk of Marijuana Dependence

People in the study who used "high-potency" marijuana were twice as likely to become dependent as those who used lower-potency forms of the drug, according to new findings presented today (Oct. 21) at the International Early Psychosis Association meeting in Milan. People are considered to be dependent on marijuana if they experience withdrawal symptoms — such as irritability, mood and sleep problems, and decreased appetite — when they are not using the drug, according to the U.S. Nat