One of the keys to a long life may lie in your net worth. In the first wealth and longevity study to incorporate siblings and twin pair data, researchers from Northwestern University analyzed the midlife net worth of adults (mean age 46.7 years) and their mortality rates 24 years later. They discovered those with greater wealth at midlife tended to live longer.
The researchers used data from the Midlife in the United States (MIDUS) project, a longitudinal study on aging. Using data from the first collection wave in 1994-1996 through a censor date of 2018, the researchers used survival models to analyze the association between net worth and longevity.
To tease apart factors of genetics and wealth, the full sample was segmented into subsets of siblings and twins.
In the full sample of 5,400 adults, higher net worth was associated with lower mortality risk. Within the data set of siblings
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