Studies have found an association between cannabis use and transient psychotic symptoms, such as unusual thoughts, suspiciousness, and hallucinatory experiences. A new study suggests that this relationship is mostly attributable to genetic predisposition. But the research, which appears in JAMA Psychiatry, found that person-specific factors also influence the association between psychotic-like experiences and cannabis use to a lesser extent.

Rampant overproduction in Oregon’s market for legal, recreational marijuana has produced a 50 percent decline in prices, according to state economists. That widely documented collapse has been hard on farmers and retailers – but a boon for consumers. A new state analysis finds the price collapse sparked a big uptick in marijuana purchases – and a corresponding increase in associated tax revenue.

A substance that gives pot its kick appears to reduce the brain changes associated with Alzheimer's disease – at least in mice. In mice that had been genetically tweaked to develop symptoms like those of Alzheimer's, animals that received a synthetic form of tetrahydrocannabinol for six weeks performed as well as healthy mice on a memory test, scientists reported Tuesday at the Society for Neuroscience meeting in San Diego.

The first Food and Drug Administration-approved drug containing an ingredient derived from the marijuana plant went on sale Thursday in the United States.

Thailand is rolling out plans to legalise medical marijuana, an official told AFP Wednesday, as the country hopes to cash in on a multi-billion dollar industry with a product its supporters hail as some of the world's best. Several nations have embraced the use of medicinal cannabis, including Canada.

When researchers convinced a group of young people to stop smoking pot, their cognition quickly improved. This adds to research warning against teen pot use, despite marijuana's growing acceptance.

Much like making craft beer, yeast enzymes can be used to create THC and CBD, the active chemicals found in marijuana. Unlike other modern high growth industries, the pot business doesn’t require a doctorate in science, or even a college degree. Much of the economic hype which surrounds the industry depends on it remaining an agricultural product. But it might not always be that way.

A senior Canadian official says the government will pardon those with a pot possession record of 30 grams or less. The development comes as Canada legalizes so-called recreational marijuana beginning Wednesday. The official said Tuesday that those convicted of possessing of 30 grams or less of marijuana will be eligible for a pardon, but they will have to apply for one.

The Otto is a one-touch joint making machine.

Campers heading out to one of Canada's national parks can start adding cannabis to their kit. Parks Canada confirmed this week that marijuana can be consumed at its campsites — part of a policy of offering visitors a "consistent and predictable" experience at national parks across the country. "While Parks Canada campgrounds are public areas, the agency treats individual campsites as temporary domiciles for our visitors. For this reason, at Parks Canada campgrounds, consumption of cannabis will be permitted in campsites," spokesperson Marie-Hélène Brisson wrote in an email.

B.C.'s lucrative, underground marijuana business may soon go bust, starting Wednesday when recreational marijuana becomes legal in Canada. A new, legal industry has been preparing for months to serve the marketplace and that will hurt — or perhaps destroy — the province's multi-billion dollar illegal pot trade that has flourished for decades.

The marijuana industry boasts hundreds of different cannabis strains, all of which promise a unique 'high'.

Mat Beren and his friends used to drive by the vast greenhouses of southern British Columbia and joke about how much weed they could grow there. Years later, it’s no joke. The tomato and pepper plants that once filled some of those greenhouses have been replaced with a new cash crop: marijuana. Beren and other formerly illicit growers are helping cultivate it. The buyers no longer are unlawful dealers or dubious medical dispensaries; it’s the Canadian government.

There was medical cannabis news out today in the UK. It emerged that within the next month, it will be available on prescription. Currently cannabis-derived medicines are only prescribed in exceptional circumstances and a medical panel has to agree. The latest move represents a shift in the tone and the procedure by the government's Home Office.

If your idea of buying weed is going to a dealer's apartment and shelling out for whatever is on hand, a new reality is fast approaching. Canadians will soon be able breeze into meticulous, brightly lit outlets that have more in common with Apple stores and wine shops than the dingy, old head shops of yesteryear. But as legalization nears, there's a key question still hanging out there: What's the price?

Travellers flying within Canada will be allowed to pack as much as 30 grams of cannabis. This what that looks like.

As soda and beer sales fall in North America and legal marijuana sales spike, soft drink makers and brewers are partnering with cannabis companies to expand their market horizons. The trend has in turn spurred B.C.-based companies such as Tilray Inc. (Nasdaq:TLRY), Ascent Industries Corp. (CSE:ASNT), Emerald Health Therapeutics (CSE:EMH) and Chemesis International Inc. (CSE:CSI) to jump on the research bandwagon to improve technology for infusing drinks with active cannabis ingredients.

Veteran Henry Cobbs promises to take his case to the U.S. Supreme Court if needed. A Vietnam veteran and career educator at an elite military training school now finds himself resorting to a Reagan-era executive order in hopes of clearing his name. Henry Cobbs’ crime — vaping a non-psychoactive form of cannabis to treat his prostate cancer.

The nation's top drug regulator has officially changed how it regulates FDA-approved drugs that contain CBD, a marijuana compound, with the approval of the epilepsy drug Epidiolex. It's the first time in 46 years that the Drug Enforcement Administration has shifted its stance on cannabis.

Ontario residents will be able to smoke recreational cannabis wherever the smoking of tobacco is permitted, the Progressive Conservative government said Wednesday, loosening rules established by the previous Liberal regime. The government will also not put a cap on pot shops when it starts licensing and regulating the province’s private cannabis retail marketplace, and municipalities will have until January to opt out of hosting the stores.