The US-born woman who was the world’s oldest living person before she died in Spain last August at age 117 once attributed her longevity to “luck and good genetics”. And, evidently, Maria Branyas Morera was right.A study of Branyas’s microbiome and DNA that scientists began conducting before her death reportedly determined that the genes she inherited allowed her cells to essentially feel and behave as if they were 17 years younger than they actually were. And Branyas’s microbiota – which primar...