World’s oldest person asked doctors to study her body; cells told a different age

María Branyas Morera, who passed away at 117, lived an extraordinary life that captivated researchers. A novel analysis of her biological samples uncovered striking truths about her aging process, indicating a difference of about 23 years between her biological and chronological age. Her gut microbiome and blood composition contributed to her remarkable health, underscoring the impact of genetics and lifestyle choices on her impressive longevity.