The usual story about longevity involves people in their eighties and nineties. A study published in Nature Communications found the signal much earlier than that, in the first month of life.
Researchers led by Matthew Thomas Keys at the University of Southern Denmark tracked four generations descending from 659 Danish families selected for exceptional longevity. The founding families each contained two or more siblings who had reached at least 88 and were alive when recruited between 2006 and 2009, and 99.5 percent eventually had two or more siblings who survived to at least 90.
