A new study (on mice) by UC Riverside found that eating too much sugar and fat in childhood can alter microbiomes for life, even if you eat healthier later in life. An early-life Western diet led to a significant decrease in the total number and diversity of gut bacteria, and while regular exercise positively impacted gut bacteria, a bad early-life diet had more long-lasting effects on the microbiome than early-life exercise. The researchers summarized: “You’re not only what you eat, but what you ate as a child.”


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