Left-handed women under the age of 50 are more than twice as likely to develop breast cancer than those who are right-hand dominant. What?
Yep, that's what a new study reveals.
This left-handed conclusion, published in the journal Epidemiology, comes from the study of 12,000 women in the Netherlands whose medical histories were followed for 13 years. Discounting all other factors -- lifestyle, environment, and other disease -- left-handers came up with a risk of breast cancer 1.39 times that of right-handers. For pre-menopausal women, the figure climbed to 2.41.
