New research has found that older adults who improved their fitness through a moderate intensity exercise program increased the thickness of their brain’s cortex, the outer layer of the brain that typically atrophies with Alzheimer’s disease.

According to a new study from the University of Maryland School of Public Health, the improvements were found in both healthy older adults and those diagnosed with mild cognitive impairment (MCI), an early stage of Alzheimer’s disease.

“Exercise may help to reverse neurodegeneration and the trend of brain shrinkage that we see in those with MCI and Alzheimer’s,” said Dr. J. Carson Smith, an associate professor of kinesiology and senior author of the study, published in the Journal of the International Neuropsychological Society.

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