“Left-handed people die younger.”

The idea that left-handed individuals have a shorter lifespan is a persistent misconception with origins in flawed scientific studies from the late 20th century. Specifically, a 1988 paper in *Nature* and a 1991 study in the *New England Journal of Medicine* by psychologists Diane Halpern and Stanley Coren garnered significant attention by suggesting left-handers died several years earlier than right-handers. These studies often relied on analyzing death records or questionnaires sent to relatives of the deceased, which introduced significant methodological problems.

The primary flaw in these early studies was their failure to account for historical changes in the prevalence of left-handedness. For much of history, and particularly in older generations, left-handed individuals faced societal pressure and even forced correction to use their right hand. This meant that older cohorts of deceased individuals would naturally show a lower proportion of self-identified left-handers. When studies compared the average age of death between these groups, the seemingly younger average age for left-handers was a statistical artifact, simply reflecting that left-handers in the population were, on average, born more recently.

Despite these early, problematic findings, the myth gained traction and continues to be believed by many. This is partly due to the sensational nature of the initial claims and the difficulty of dispelling a widely publicized "scientific" finding. Furthermore, a world primarily designed for right-handers, with tools and environments often less suited for left-handed use, led some to speculate about increased accident rates for left-handers, potentially contributing to a shorter lifespan. However, more recent and robust research, including prospective studies that track individuals over time, has consistently shown no significant difference in life expectancy between left-handed and right-handed people.