Study: Extra pounds shrink brain

August 27, 2009 That's according to new study that found that elderly individuals who were obese or overweight had significantly less brain tissue than individuals of normal weight.

Researchers from UCLA say much of that tissue was in the frontal and temporal lobe regions of the brain. That's the decision-making and memory portion of the brain.

The findings could have serious implications for aging, overweight or obese individuals, including a heightened risk of Alzheimer's.