How Nicotine Affects a Marijuana User’s Brain

Monday, August 24, 2015

Many marijuana users also smoke cigarettes, but what this combo does to the brain may surprise you.

A new study from The University of Texas at Dallas (UTD) found that the hippocampus (an area of the brain linked to memory and learning) may be significantly smaller in marijuana users — and in combo users — compared to nonusers or those who use tobacco exclusively.

In spite of this, those who indulged in both tobacco and marijuana had increased memory function.

"We have always known that each substance is associated with effects on the brain and hypothesized that their interaction may not simply be a linear relationship," said lead study author Francesca M. Filbey, PhD, the director of cognitive neuroscience of addictive behaviors at UTD, in a press release. "Our findings confirm that the interaction between marijuana and nicotine is indeed much more complicated due to the different mechanisms at play."

Continue Reading >>
BrainHealth® is a registered service mark of The University of Texas at Dallas