Brain differences in children and teens who experiment with drugs early show up before they take their first puff or sip ...

Long-term marijuana users (usually 1-4 times weekly) at the age of 45 had a mean 5.5 points IQ decline (compared to childhood), and poorer learning and processing abilities.

New concerns on marijuana and driving 02:35. In the study, researchers looked at 59 marijuana users who had used marijuana daily for the past 60 days, and had used the drug on at least 5,000 ...

The brain continues to develop well into the 20s, and even into the 30s, said Breiter, who is concerned about the long-term impacts of marijuana use on the developing brain.

New research on marijuana's impact on personal health shows that it's not just bank accounts that can shrink due to long-term recreational use. The drug may also decrease brain volume. “Long ...

The research also suggests anti-inflammatory therapies may be able to prevent the marijuana-induced brain damage. "Now that marijuana is moving toward widespread legalization and recreational use, ...

Brain atrophy can be slowed or stopped in some situations. Others — like Alzheimer’s and Huntington’s disease — will get progressively worse in both symptoms and brain atrophy over time.

Using marijuana does not cause changes in brain volume, a new study suggests. Public health experts have cited concerns that using marijuana could be associated with structural changes in the brain.

A collaborative study sheds light on how cannabis use affects brain development in young people, the main one being atrophy of certain regions of the cerebral cortex.