Much of the research done so far has been on lab animals and simple organisms like worms, which enable researchers to both measure and tweak life expectancy....
"Our study is the first to demonstrate that menopause makes you age faster."
Researchers also uncovered new classes of people at twice the risk of dying or becoming incapacitated in five years.
Factors such as loneliness, depression and having broken a bone recently are more likely to predict a person's risk of dying in the next five years
Previous research has shown that a person's genes and environmental factors contribute equally to how old a person looks.
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