A 2021 study published in Jama Psychiatry examined the effect of cannabis on brain development in a group of 799 adolescents, aged 13 to 17, who had a brain MRI scan at baseline and after 5 years ...

How scientists study the effects of marijuana on the brain is changing. Until recently marijuana research largely excluded tobacco users from its participant pool, but scientists have found reason ...

This is the last post in a three-part series. Parts 1 and 2 covered marijuana’s brain mechanism and seven short-term effects. Now, we’ll explore marijuana's long-term effects on the brain ...

With more and more states allowing for either medicinal and recreational marijuana sales, many fleets are beginning to show concern about whether or not they need to keep a closer eye on their ...

Scientists have long known that the brain possesses natural chemicals similar to marijuana. While little is known about their precise function in the brain, studies suggest that these compounds ...

For a couple of minutes, let’s put aside policy concerns and look just at the effects of cannabis on the brain. Two studies published in top journals, both in April 2014, look inside human ...

There’s a lot to be learned about how marijuana affects the body. For now, researchers have determined what long-term marijuana use will do to a user’s brain.

In fact, new studies show that young adults who are heavy pot users subject themselves to abnormal changes in their brain structures, especially with regard to working memory. “It affects memory ...

Regular cannabis users might face challenges with episodic foresight or the ability to consider future behaviors, suggests to a recent study, and its top researcher says neuroimaging techniques ...

This effect, the researchers said, also was affected by how many cigarettes per day the person smoked. The groups who smoked only marijuana or tobacco did not show any link between hippocampal ...

How scientists study the effects of marijuana on the brain is changing. Until recently marijuana research largely excluded tobacco users from its participant pool, but scientists at the Center for ...