THC, the psychoactive ingredient of cannabis, improved symptoms associated with the inflammatory disease in a mouse model.

A meta-analysis of more than 80 studies from the past four decades finds weak evidence to support the use of medicinal cannabis to treat anxiety, depression, and other mental health disorders.

The animals showed changes in both slow wave and rapid eye movement sleep.

Recent federal announcements serve as reminders that in the US policy continues to outpace science when it comes to cannabis.

Proteins that synthesize, bind, and degrade endocannabinoids are present in the body’s sperm factories, suggesting that the use of cannabis may directly affect them.

The federal government cautions that the drug can affect brain development in both teens and fetuses.

After years of stalling, the agency says it plans to provide notice on pending applications from growers—but only after it establishes new regulations for suppliers.

A brazier and charred stones, thought to be part of burial ceremonies, preserve signs that people used the drug thousands of years ago.

Frequent use of high-strength cannabis may increase the risk of mental health problems, according to a large-scale epidemiological study.

Rodent and human studies have revealed a multitude of effects starting during gestation and lasting into adulthood.

A Novartis subsidiary is partnering with a Canadian cannabis company to sell medical marijuana worldwide.

Offspring of rats exposed to vaporized cannabis had difficulty switching strategies to get a sugar reward, according to a study presented at the Society for Neuroscience conference.

The country is the second in Africa to permit cannabis cultivation, but months after approval there’s been little uptake by farmers and no scientific proposals.

Epidiolex, a cannabis-derived medicine for epilepsy, will prompt federal regulatory changes that could crack open access to study the plant.

NIDA pharmacologist Michael Baumann explains how “unscrupulous vendors” hijacked compounds used in neuroscience and turned them into dangerous drugs.

Patients will be able to access the drug with a prescription, and there are no plans to allow for recreational use.

The coming legalization of recreational marijuana is already increasing funding for studies, but regulations on such research have been slow to change.

As the CBD-based medication enters the market, the agency promises a crackdown on producers of cannabidiol products that make unproven claims.

Marijuana ointments as cancer treatments remain a distant prospect.