The effect of physical fitness on mortality is overestimated
Briefly

New research from Uppsala University reveals that individuals with high fitness levels in their late teens have a lower risk of premature death not only from chronic diseases like cardiovascular issues but also from random accidents. This study, using data from over 1.1 million Swedish men conscripted between 1972 and 1995, indicates that previous research may have overlooked significant factors differentiating those with varied fitness levels, confounding the perceived benefits of fitness on mortality rates.
We found that people with high fitness levels in late adolescence had a lower risk of dying prematurely, for example from cardiovascular disease, compared to those with low fitness levels. But when we looked at their risk of dying in random accidents, we found an almost similarly strong association.
This suggests that people with high and low fitness levels may differ in other important ways, which is something that previous studies have not fully taken into account.
Read at ScienceDaily
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