It notes that average levels of the psychoactive ingredient in cannabis, THC, are five to 10 times higher than levels in the 1970s.

One researcher said the findings should be a warning as cannabis vaping increases.

Getting high, but feeling low. Science is split on whether the effects of cannabis are good or bad, with recent research showing it could boost brain power in older adults, while other studies show ...

Quitting cannabis may yield greater improvements in PTSD symptoms than continued use in adults with both PTSD and cannabis ...

Using data from 100 million people, researchers found that amphetamine use increased the risk of stroke by 122%, and that ...

A new study looked for the first time at how cumulative cannabis use is associated with changes in brain structure and cognitive performance in older age – and the result is encouraging.

Researchers analyzed health data on 460,000 teenagers in Northern California. The teens were followed until they were 25 years old.

The largest fMRI study to date finds that heavy cannabis use in young adults reduces brain activity and impairs working memory performance.

As wellness conversations broaden beyond abstinence, new research explores cannabis through a harm-reduction lens and what it could mean for moderating alcohol consumption.

A new study from Brown University suggests that cannabis use may lead to a short-term reduction in alcohol consumption among heavy drinkers, though researchers caution that the findings are ...

A new study led by Boston College School of Social Work Professor Summer Sherburne Hawkins found that recreational cannabis legalization in the United States is driving increases in cannabis use among ...

As wellness conversations broaden beyond abstinence, new research explores cannabis through a harm-reduction lens and what it could mean for moderating alcohol consumption.