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Beth Newcomb

The Tsimané people of Bolivia have almost no dementia. Scientists say modern life is our problem. (GOOD)

By In the News

GOOD featured research by Andrei Irimia on how indigenous groups in the Bolivian Amazon show less dementia and slower brain aging than industrialized populations. “The lives of our pre-industrial ancestors were punctuated by limited food availability,” Irimia said. “Humans historically spent a lot of time exercising out of necessity to find food, and their brain aging profiles reflected this lifestyle.”

How Exercise Helps the Brain and Body in Parkinson’s Disease (Being Patient)

By In the News

Being Patient quoted John Walsh on how exercise helps various aspects of health in Parkinson’s disease. Tremors, moving slowly, stiffness, and brain processing that affects cognition, are symptoms caused by the loss of dopamine neurons in the brains of Parkinson’s patients. But repetitive, high-intensity exercise can improve connections in the brain circuitry that don’t involve dopamine, said Walsh. Furthermore, exercise causes the dopamine cells that have not yet died to work more efficiently; however, exercising cannot slow the death of dopamine neurons, he added.