To be called hemp, it must contain less than 0.3 percent THC
With the right support and resources, individuals can successfully overcome nicotine addiction and lead healthier, smoke-free lives
Hawkins BT, Abbruscato TJ, Egleton RD, Brown RC, Huber JD, Campos CR, et al
From Wikipedia I could find a study, prompted by certain phrases used by Shakespeare in the 16th/17th century, finding traces of cannabis in pipes buried in Shakespeare's home town: Why write I still all one, ever the same, And keep invention in a noted weed, Shakespeare, Sonnet 76 However, even if this does indicate that marijuana consumption wasn't unknown in England before Carroll's days (which it does very weakly) it still doesn't imply that Lewis Carroll himself smoked marijuana (despite extremely flaky claims such as the fifth paragraph here), or that he was familiar enough with the habit to insert it into his rather hallucinogenic fantasy world
Instead, a comprehensive approach is necessary to address the individual's drug use patterns and related medical, mental, and social problems
Diet: Whatever you eat reflects on your skin sooner or later