Cannabis Conundrum

Cannabis and bipolar disorder show a strong link in one of the largest studies of its kind. Researchers followed 463,396 teenagers in Northern California. Those who reported using cannabis in the past year were about twice as likely to be diagnosed with bipolar disorder later on. Their risk of psychosis was higher still. The study

Cannabis and alcohol used to sit in separate boxes in the public mind. New American research suggests that line has blurred. Daily cannabis use among parents has quadrupled since 2012. Meanwhile, 49% of past month users of both substances combined them at the same time during their last drinking episode. Together, the findings describe a

Legal on paper does not mean safe on the job. That blunt message runs through a major legal reference for employers. The drug free workplace facts it sets out deserve a far wider audience. It all comes from Drug Testing Law, Technology and Practice, February 2026 update, written by David Evans and published by Thomson

Cannabis hospital admissions in Victoria were 49 per cent higher in 2022/2023 than a decade earlier. The study behind that figure examined every public and private hospital episode in the state. Published in the journal Addiction, the research by Myfanwy Graham and colleagues at Monash University counted 39,565 admissions between July 2013 and June 2023.

People who use cannabis are about one and a half times as likely to become victims of violence, and the association is stronger among women than men. That finding sits inside a review of 63 studies and more than 265,000 people, led by the Institute of Psychiatry, Psychology and Neuroscience at King’s College London and

Adults with hard to treat epilepsy who used cannabis almost every day had more than twice as many convulsive seizures a year as those who did not use it, and they reached the point of needing specialist inpatient monitoring thirteen years earlier. The finding comes from a study published in Epilepsia on 28 September 2026,

Marijuana industry funding is not the small, local story its supporters like to tell. A new tracker called Who Funds Marijuana Legalization? logs 62 entries showing that tobacco, alcohol and drug companies have put billions of dollars into the sector since 2018. The biggest marijuana operators, meanwhile, have spent heavily on ballot measures, lobbyists and

Cannabis and tobacco use often go hand in hand. For young people who already show early signs of psychosis, that habit may carry more weight than anyone assumed. Two linked studies from the same North American cohort point to a higher chance of developing a psychotic disorder, and weaker results on thinking tasks, among those