This popular myth has its roots in a series of flawed papers published in the late 1980s and early 1990s.
Left-handed people, on average, die younger than right-handed people.
Interesting facts about left-handed people – WETM –
Medical Archives, Page 21
Medical Archives, Page 21
Do left-handed people really die young? - BBC News
Do left-handed people really die young? - BBC News
Medical Archives, Page 21
Medical Archives, Page 21
Modeling to explore and challenge inherent assumptions when cultural norms have changed: a case study on left-handedness and life expectancy, Archives of Public Health
20 things you didn't know about being left-handed
Left handed people, what is it like living in a world designed almost exclusively for right handed people? What problems do you experience? - Quora
20 things you didn't know about being left-handed
Things You Never Knew About Left-Handed People
What percentage of women are left-handed? Why are there fewer
Things That Are Hard for Left-Handed People