The findings, which were published in the journal Cell Reports Medicine on September 24, point to a combination of genetic luck and lifestyle choices. Branyas did not smoke or drink, she exercised regularly, and she had an active social life. This all certainly helped. […]
At the same time, she had variants in her genes that are associated with longevity and that protect against dementia, heart disease, diabetes and other illnesses. […]
Her gut microbiome was also like that of a younger person, the study found. She had lots of Bifidobacterium; beneficial bacteria that probably got a boost from the three servings of yogurt she reportedly ate every day.
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TL:DR; healthy lifestyle and family luck.
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yogurt