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Are Stress Resistance and Longevity Really Linked in Normal Living Conditions?

Background: The existence of a positive relationship between stress resistance and longevity is often accepted, but this conclusion mainly stems from studies putting animals in adverse conditions such as food restriction. Objective: It is argued that a positive correlation between stress resistance and longevity has not been clearly observed at the individual level in animals or humans living in nonstressful conditions. Experiments should verify this point. Conclusions: If experiments would fail to show this correlation, there would be no ground for the proposal that treatments stimulating stress resistance could increase longevity and health.