"This possibility [of slow aging genetic variants] may be a clue as to why 85 percent of women live to 100 or more, while only 15 percent of men do." RELATED: Moms Who Give Birth In This ...

The researchers found that, in the first month after birth, 47% of the 76 indicators stabilized close to their pre-conception values. But 41% of the indicators took longer than 10 weeks to stabilize.