Chronic marijuana use may alter the brain
![marijuana](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/11/Marijuana_free_0.jpg?fit=840%2C460&ssl=1)
Long-term use of marijuana may lead to reduced gray matter and increased white matter connectivity in the brain.
U.S. Fish and Wildlife Service/Wikimedia Commons
Long-term use of marijuana may lead to reduced gray matter and increased white matter connectivity in the brain.
U.S. Fish and Wildlife Service/Wikimedia Commons