Sunday Telegraph: August 29, 2010

In this article, Associate Professor Anthony Harris, of Sydney University, comments on a 35-year study that found “people who consumed cannabis heavily from the age of 14 were more likely to develop schizophrenia.” Links between schizophrenia and “heavy consumption of drugs such as cannabis, speed and ice” are discussed, however because speed and ice are “relatively new on the drug scene” there has not been “an opportunity to conduct long-term studies into their links with the condition.”