Ars technica covered this in a well written, well explained article [1] yesterday. Worth a read for folks who don't necessarily have the right background to und

Ars technica covered this in a well written, well explained article [1] yesterday. Worth a read for folks who don't necessarily have the right background to understand the significance and / or importance. To quote one of the many good excerpts: "They looked at siblings-in-law, and first-cousins-in-law, and then further afield, at relationships like “the sibling of a sibling’s spouse" (your brother’s wife’s sister) and "the spouse of a spouse’s sibling” (your husband’s sister’s husband). Even at these distant relationships, lifespans were correlated—if your spouse’s sibling’s spouse lived to a ripe old age, that means you’re a bit more likely to do the same." Worth reading, IMHO. [1] https://arstechnica.com/science/2018/11/genetics-play-less-of-a-role-in-lifespan-than-we-thought/ https://arstechnica.com/science/2018/11/genetics-play-less-o...