The figure doubled from the year before.

More than half of people who take medical cannabis for chronic pain say they’ve driven under the influence of cannabis within two hours of using it, at least once in the last six months, according to a new study. One in five of them said they’d driven while ‘very high’ in the past six months, researchers from the University of Michigan Addiction Center report in the journal Drug & Alcohol Dependence .

Buried deep inside a mountain on a remote Norwegian island, agricultural institutions from around the globe are collaborating to safeguard important crops in the event of global catastrophe. That includes marijuana. Currently, there are over 29,500 marijuana seeds – including 31 strains of marijuana and 8 strains of hemp being held in the vault. That is more seeds than there are asparagus, blueberry or raspberry seeds stored at the facility.

A few years ago, I went to a new physician for a checkup. She ran through the list of questions that doctors like to ask...

Permitting pot is one thing; promoting its use is another.

Scientists have found preliminary evidence that tetrahydrocannabinol (THC) and other compounds found in marijuana can promote the cellular removal of amyloid beta, a toxic protein associated with Alzheimer's disease.

In a small study of infrequent cannabis users, Johns Hopkins Medicine researchers have shown that, compared with smoking cannabis, vaping it increased the rate of short-term anxiety, paranoia, memory loss and distraction when doses were the same.

Thailand has become the first Asian country to legalize medicinal marijuana after parliament voted to amend a narcotics law. The country had a tradition of using marijuana to relieve pain and fatigue until the 1930s.

This week, a plant that's nearly identical to marijuana is set to become legal to grow in the US. Thanks to the US Farm Bill, which the House passed on Wednesday in a 369 to 47 vote, American farmers will be able to plant and harvest hemp, a strain of the same plant species from which marijuana originates. The bill passed the Senate Tuesday in an 87 to 13 vote, and President Donald Trump has indicated his support. Hemp legalization has been a longtime goal of Senate Majority Leader Mitch McConnell, a Republican from Kentucky, who believes it can help replace tobacco as a key crop for his state's farmers.

Catholic bishops in British Columbia and Yukon have endorsed medical marijuana use, but condemned recreational pot smoking as contrary to the teachings of the church. In a letter posted online in late November, the bishops — six from B.C. and one from Whitehorse — warn that “the mere fact that an activity is made legal by the government does not automatically mean that it is morally acceptable.” Recreational cannabis became legal in Canada on Oct. 17, one of the signature accomplishments of Justin Trudeau’s government.

Legislation comes ahead of a referendum on recreational marijuana use in next two years

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.

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

In the latest issue of Genome Research, a group of North American scientists have, for the first time ever, published a full map of the cannabis genome. Among the myriad of interesting insights to glean from the chart is the finding that the genes that encode for THC and CBD production evolved thanks to bits of DNA introduced by viruses that infected the plant and successfully colonized its genome millions of years ago.

On Monday, the first business day after Utah’s medical cannabis initiative became law, state legislators supplanted it with a more tightly controlled plan for providing marijuana-based treatment. The Utah Medical Cannabis Act, designed as a replacement for voter-approved Proposition 2, breezed through the Utah House of Representatives and Senate during Monday’s special session. The one-day gathering of state lawmakers has been in the works since October, when Gov. Gary Herbert announced that supporters and opponents of Prop 2 had reached consensus around a legislative solution to their disagreements.

Smoking cannabis has been linked with schizophrenia – and 94% seized in Britain in 2016 was of the high-potency variety.

The Trump administration is abandoning a Justice Department plan to crack down on recreational marijuana in states where it is legal, a move that enables cannabis businesses in California and several other states to operate without fear of federal raids or prosecution.

For depression, use may exacerbate symptom severity over time.By passively monitoring user-generated data from medical cannabis patients, researchers have glimpsed the types and amounts of marijuana that seem effective for relieving symptoms of stress, anxiety, and depression. The findings could direct more detailed research into the best strains for specific conditions. But the data also hints at a danger of using marijuana to manage depression symptoms in the long term.

The City of Seattle on Friday filed a motion asking the court to vacate hundreds of marijuana possession convictions going back three decades and adversely impacting people of color.

It seems that once they’ve inhaled, it’s impossible for them to ever forget the scent

The success or failure of cannabis legalization comes down to one thing: beating the black market. So what do dealers think? It’s a case of My Guy versus The Man: who will you buy your pot from? As legalization looms, governments across Canada are angling for a generous slice of what was a $5.7bn marijuana business in 2017. The rules vary across the country – some provinces will permit licensed private retailers; others will sell pot exclusively through government stores – but success will ultimately depend on just one thing: beating the black market.

We take a fair look at some of the best counter arguments for legalization and see how they hold up in review.

The Senate voted 52-29 to approve the government's newest version of Bill C-45 on Tuesday evening.

Canadians will soon be able to order marijuana through the mail as part of the nation’s new legalization of recreational pot. Lawmakers in the country passed the Cannabis Act earlier this week, setting the country up to regulate the market in the coming months. Prime Minister Justin Trudeau announced Wednesday that legalization will begin on Oct. 17. The country is the second to legalize the substance nationwide, after Uruguay.

Russia is not happy with Canada for legalizing recreational marijuana. Moscow issued a stern warning to Ottawa over the impending cannabis legalization on Oct. 17, saying Canada “deliberately decided to breach” international law. “We expect Canada’s partners in the G7 to respond to its ‘high-handedness’ because this alliance has repeatedly declared its adherence to the domination of international law in relations between states,” Russia’s Ministry of Foreign Affairs said in a statement.

Medical marijuana laws by state. Includes fees, possession limits, and other medical marijuana program guidelines.

Scientists in a small Ontario laboratory are testing enzymes and experimenting with fermentation. Their techniques are not new, but their focus is a first. They are developing what is being described as the world’s first beer brewed from cannabis. Most cannabis beers on the market are brewed from barley and infused with marijuana oil, according to Dooma Wendschuh of Province Brands, the Toronto startup behind the product.

At first blush, it would seem almost obvious that individuals with chronic obstructive pulmonary disease (COPD) did not show improvement after inhaling vaporized cannabis. However, with real clinical data for cannabis’ true effects on human health being in scant supply, we should expect a range of studies and results to pop-up over the next several years, as more places begin to legalize the drug.

The medical marijuana market is in a downward spiral as businesses, lured by big money, shift to recreational.

A deputy in Clare County, MI, went to 80-year-old Delores Saltzman’s home in June trying to return a lost phone and ID to her granddaughter. When the deputy left, she had Saltzman in handcuffs in the back seat of her patrol car. According to WXMI, the deputy smelled marijuana from the front porch of Saltzman’s home. When the deputy asked Saltzman who it belonged to, she confessed it was hers.

As John Mayer tells us (and tells us, and tells us), your body is a wonderland. When it comes to microbial life, this holds especially true for your gut. There, hundreds of residential species eat, breed, and excrete waste. Somehow, your intestines manage to thrive with this zoo inside them—for the most part. In some cases things aren’t so wonderful: your gut starts attacking itself in an autoimmune response that’s bad for microbes and host alike.

More and more Americans are reporting near-constant cannabis use, as legalization forges ahead.

The California state Senate voted this week to pass legislation that will help to expunge or reduce past marijuana-related convictions handed down before pot was legalized in the state. The Senate passed the bill on Wednesday in a bipartisan vote of 22-8, almost three months after it was approved by the California State Assembly by a vote of 43-28, according to High Times.

As New York moves toward legal recreational cannabis, the failure to enact nationwide reforms is becoming more glaring.

The Marijuana Policy Coordination Committee wants to counteract positive marijuana messages and identify problems with state legalization initiatives, according to documents obtained by BuzzFeed News.