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Their research, published in the journal Immunology and Cell Biology, suggests exercising early in life can alter gut microbes for the better. Researchers found exercise during a window of opportunity in early-life helps optimize health by promoting better brain and metabolic activity. "Exercise affects many aspects of health, both metabolic and mental, and people are only now starting to look at the plasticity of these gut microbes," said senior study author Monika Fleshner, a professor in CU-Boulder's Department of Integrative Physiology, in a press release. "That is one of the novel aspects of this research."
Though the microbial community is considered somewhat malleable into adult life, including being susceptible to changes in sleep and diet patterns, the researchers saw that gut microorganisms are at "peak plasticity" at a young age. By using rats as a model, the team could see rodents who exercised every day as juveniles developed a more beneficial microbial structure. This included the expansion of important probiotic bacteria compared to their sedentary counterparts, as well as rats exercising only in adulthood.
The researchers have not yet pinpointed a precise age at which the gut microbe community is most susceptible to change, but these preliminary findings seem to indicate the earlier, the better.
http://www.medicaldaily.com/gut-bacteria-benefits-exercise-early-life-may-promote-healthy-brain-and-metabolism-367596