terça-feira, 6 de novembro de 2018

Longevidade e genes?

Nem tanto:
https://www.wired.com/story/the-key-to-a-long-life-has-little-to-do-with-good-genes/

Citando:
"It turns out that through every generation, people are much more likely to select mates with similar lifespans than random chance would predict. The phenomenon, called “assortative mating,” could be based on genetics, or sociocultural traits, or both. For example, you might choose a partner who also has curly hair, and if the curly-haired trait winds up being somehow associated with long lifespans, this would inflate estimates of lifespan heritability passed on to your kids. Same thing for non-genetic traits like wealth, education, and access to good health care. People tend to choose partners in their same income bracket with the same terminal degree, both of which are associated with living longer, healthier lives.

The first hint that something other than genetics or a shared family environment might be at work came when Ruby tried looking at in-law relatives."