The use of cannabis is generally more prevalent among youth, with 39.3% of This is the first in a series of 15- to 17-year-olds and 69.9% of 18- to 19-year-olds reporting lifetime reports that reviews the effects use. [...] Rates of past-year use increase from 15–17 years of age (29.2%) to of cannabis use on various aspects of human functioning and 18–19 years of age (47.2%). [...] In this report, the users in Canada aged 15 and older reported using cannabis two or fewer effects of chronic cannabis use on times during the three months prior to the survey. [...] Hashish or cannabis resin is the cannabis use is associated with use include heavy use, frequent dried brown or black resinous secretion reductions in the hippocampal use, regular use, long-term use, of the flowering tops of the cannabis and amygdala brain structures abuse, and dependence. [...] In report also addresses the recent relaxation, changes in perception, time contrast, studies that have surge of worldwide interest in distortion, deficits in attention span and examined the effects of chronic understanding the link between memory, body tremors, and impaired cannabis use following more chronic cannabis use and motor functioning.