Centenarian blood tests give hints of the secrets to longevity https://theconversation.com/centenarian-blood-tests-give-hints-of-the-secrets-to-longevity-215166 E. g. people in the group with the lowest uric acid had a 4% chance of turning 100 while in the group with the highest uric acid levels only 1.5% made it to age 100