Do left-handed people really die young?

The finding was advanced in two articles in the late 1980s and early 1990s by American psychologists Diane Halpern and Stanley Coren - both published in prestigious scientific journals, Nature and the New England Journal of Medicine.
But what could the explanation for the premature death of left-handers possibly be?
Something to do with the fact that tools are not designed for them?
"Knives are very awkward," says Claire Allen from Hampshire in southern England.
"They are designed for right-handers - if you use it as a left-hander it cuts on the slant all the time, whereas for a right-hander it cuts straight."
I know that my mother would be bereft without her special left-handed sewing scissors.
But surely nothing like this could be responsible for cutting life short by almost a decade?
"It's not at all plausible," says Chris McManus, professor of psychology and medical education at University College London and the author of Right Hand, Left Hand.
"If this were true it would be the largest single predictor we had of life expectancy - it would be like smoking 120 cigarettes a day plus doing a number of other dangerous things simultaneously. It really is highly implausible that an epidemiologist wouldn't have spotted it previously."
If it's so implausible why was it published in respected academic journals and why has the myth endured?
Full stroy on BBC