The effects of cannabis will vary from person to person depending on characteristics of the:
Individual (user) – mood, physical size, physical and mental health, gender, previous experience with cannabis, expectations of the drug, personality and whether other drugs have been taken.
Drug – the amount used, the content of the THC, and whether it is smoked or eaten.
Setting (environment) – whether the person is using with friends, on his/her own, in a social setting or at home, at work or before driving.