Distinctive Voices

s04e08: Dr. Carl Cotman: Exercise Builds Brain Health


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Dr Carl Cotman, University of California, Irvine: An overall objective of research in the study of brain aging is to identify effective intervention strategies to reduce age-related cognitive decline. Over the past few years, there has been a growing focus on the importance of exercise for promoting healthy brain function, particularly in the aged and Alzheimer’s disease (AD) brain. Studies on the mechanisms by which exercise can improve brain health and reduce aging-related cognitive decline have revealed that physical exercise increases brain levels of brain derived neurotrophic factor (BDNF). BDNF mobilizes a sequence of molecular and cellular events which promote synaptic plasticity, learning and memory and brain health. Overall, it appears that a moderate to high level of physical for the elderly can reprogram the brain’s gene expression patterns to a more youthful state. Currently, a 300 person multisite clinical exercise trial for people with mild cognitive impairment is ongoing to evaluate the impact of aerobic exercise vs stretching and toning on biomarkers and cognitive function in this population.
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