If South Africa's argument in court is that marijuana causes harm, it deserves to lose. The real question it should ask is whether criminal prohibition is the effective way forward.
The proportion of population who use legal and illegal drugs has remained stable or trended down. Fewer young people are using, but the proportion of older people using drugs and alcohol has grown.
Baby boomers might not be boosting their health with a glass or two of alcohol a day after all.
Mixing alcohol with energy drinks is all part of a big night out, according to new research.
Women are catching up to men in rates of alcohol consumption and this has important implications for how we think about our community response to harmful alcohol use.
Recent animal studies show the developing embryo is highly susceptible to environmental changes and the actions of the mother in early stages of pregnancy.
Removing alcohol brands as sponsors of sports events could help reduce the trend of young people drinking.