Doctors in the United States are not terribly concerned about your marijuana use, according to a study published recently in the Proceedings of the National Academy of Sciences (PNAS).

Researchers presented a representative sample of 233 primary-care physicians with nine hypothetical patient behaviors -- tobacco use, alcohol use, obesity, etc. -- and asked them how much of a problem they thought these behaviors were on a 10-point scale. Their goal was to suss out differences in doctors' attitudes and treatment behaviors based on their political affiliation.

Police in the Niagara Region say Health Canada medical marijuana licences are being used to hide illegal grow-ops, after 18 people were arrested and more than 4,000 plants seized in three raids.

Niagara Regional Police investigated over the past 13 months and executed three search warrants at 1651 Lakeshore Road in Niagara-on-the-Lake, Ont.

Eighteen people were arrested and 4,015 marijuana plants seized, after police said the grow-ops were using their Health Canada issued licence to hide thousands of illegal plants.

The most recent raid occurred on Monday and police said the suspects arrested were “shrouding their criminal activities” by using legal medical marijuana licences to “over produce.”

Even as they shed old stoner stereotypes, cannabis growers are already being labeled with a new stigma: resource hogs.

In Oregon, where many consumers want everything to be sustainable, there's a retail-side push for growers to use different methods. But varying climates throughout the states, as well as an uncertain regulatory environment, can make things hard for growers who want to use more eco-friendly methods.

Political leanings can skew guidance given to patients on issues including abortion and cannabis use, research indicates.

Doctors’ political beliefs can skew the advice they give patients on sensitive issues such as abortions and cannabis use, according to new research.

A survey of more than 200 doctors found that those with conservative views were more likely than others to discourage patients from having an abortion in the future. They also handed out more stern warnings over the legal and health risks of using cannabis.

Medical marijuana advocates have a new ally ― and he’s tweeting his support to a massive audience.

Justin Bieber criticized pharmaceutical companies on Twitter Sunday to raise awareness of the industry’s attempts to block medical marijuana legislation.

Solvent-based cannabis extracts, often referred to as hash oils or dabs, have completely dominated cannabis concentrate markets over the last several years. With the advancements in solvent extraction technologies and methodologies, new products are constantly circulating the shelves of dispensaries.

Recent research from South Africa has highlighted the potential cannabis has to treat cervical cancer, a disease that kills over a quarter of a million women annually. This latest study was not conducted on humans, but is the first of it’s kind and shows promising results.

A college in the Atlantic Canadian province of New Brunswick plans to institute a programme on marijuana cultivation so that students can be trained to work at local companies that produce the drug, a school official says.

The French-language College Communautaire du Nouveau-Brunswick will launch the course sometime next year, said Michel Doucet, executive director of continuing education and customized learning.

Canadian Liberal Prime Minister Justin Trudeau campaigned last year on a promise to legalise recreational marijuana and the government has said it would introduce legislation by the spring of 2017.