Long ago I did a research paper about left-handedness; I was interested in the topic mainly because both of my kids are lefties and my husband and I are not. (Please no “was the mailman lefthanded?” cracks.)
One of the prominent theories is that left handedness is basically a form of brain damage, usually caused by a difficult delivery and that people are genetically right handed. Thus I can lovingly call my kids “freaks of nature.” (You should hear what I call their father, when he gets home from his mail route… oh, I mean sales job.)
Today on yahoo I saw this lovely study about left handed women:
“When left-handed women were compared with the other women, and the data were adjusted for a number of potentially confounding factors, lefties had a 40 percent higher risk of dying from any cause, a 70 percent higher risk of dying from cancer, and a 30 percent higher risk of dying from diseases of the circulatory system.
Left-handed women also had a 2-fold increased risk of dying from breast cancer, close to a 5-fold increased risk of dying from colorectal cancer, and more than a 3-fold higher risk of cerebrovascular mortality.”
Wow, I must say I am floored. I had read a previous study linking left-handedness to earlier death, usually due to higher rates of deaths due to accidents, but this one really astounds me, how is left-handedness (something we think of as being more of an action than a condition) related to higher rates of so many diseases? My mind is not wrapping around this well at all…
The whole article from yahoo can be found here: