What influences how long we live, and how much of that is written in our genes? For many years, scientists believed genetics played only a modest role. Earlier estimates suggested that inherited factors explained about 20 to 25 percent of lifespan differences, and some large studies even placed the number below 10 percent.
A new study from the Weizmann Institute of Science, published in Science, challenges that long-standing view. The researchers report that genetics may account for roughly half of the variation in human lifespan, which is at least double previous estimates. The study was led by Ben Shenhar from the lab of Prof. Uri Alon in Weizmann’s Molecular Cell Biology Department.
