Research has shown that exercise is good for the brain. Now investigators have identified a molecule called irisin that is produced in the brain during endurance exercise and has neuroprotective effects. Researchers were able to artificially increase the levels of irisin in the blood to activate genes involved in learning and memory. The findings, published online October 10 in the Cell Press journal Cell Metabolism, may be useful for designing drugs that utilize this exercise-induced molecule to guard against neurodegenerative diseases and improve cognition in the aging population.
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