One study (Halpern et al.) suggested 7 years, but there was a statistical bias in the study. Since right-handedness was more enforced in the past, those dying young were more likely to be left handed.
Studies avoiding this bias do no show such a result.
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One study (Halpern et al.) suggested 7 years, but there was a statistical bias in the study. Since right-handedness was more enforced in the past, those dying young were more likely to be left handed.
Studies avoiding this bias do no show such a result.
I don't believe that the hand you use to write with has any effect on your life span.