Nationwide, less than 5 percent of cigarette sales occurred in pharmacies in 2009, according to a study by the Center for Global Tobacco Control
That's partly because under federal law, cannabis is a Schedule I substance, meaning it has "no currently accepted medical use and a high potential for abuse." That designation places numerous restrictions on researchers, making it difficult to carry out rigorous research on marijuana
Some signs include: Using more cannabis than intended Failing to cut down despite trying Spending a lot of time getting high Giving up important activities Withdrawal symptoms like irritability, sleeping difficulties, cravings, and an upset stomach after quitting The National Institute on Drug Abuse (NIDA) estimates that about 30% of people who use marijuana may develop CUD
Among adolescents who reported only smoking cigarettes, 42.6 percent reported having strong cravings to smoke, a symptom of nicotine dependence, in the past 30 days (Ref
Ogunwale MA, Li M, Ramakrishnam Raju MV, Chen Y, Nantz MH, Conklin DJ, & Fu XA