Cannabis affects almost every body system.
Ashton reviewed studies on the recreational use of cannabis, its potency and impact on the body and brain. Her research, published in the British Journal of Psychiatry, shows it is still popular among young people. Sixty percent of university students in Britain have tried the drug and 20 percent use it regularly. In a recent survey some users admitted to smoking up to 15 joints or more a day. Although most people smoke cannabis occasionally for its euphoric feeling, regular use has more serious side effects including impairment in memory, attention and the ability to process complex information.