Scientists Studied the Genes of a Woman Who Lived 117 Years. Here's What They Learned

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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.

TL:DR; healthy lifestyle and family luck.

Also, article mentions Jeanne Calment, who died at the official age of 122 a few years ago. Let's just say the authenticity of that age is uncertain.