Although we may have a predisposition to an inhibition, that may encourage us during adulthood or childhood to develop coping strategies,” he says.It could act as a blessing.” Wright, a lefty, agrees.The results could be due to wiring differences in the brains of left-handers and right-handers, she says.

LRRTM1 is a candidate gene for involvement in several common neurodevelopmental disorders, and may have played a role in human cognitive and behavioral evolution.

The researchers also discovered that LRRTM1 might slightly increase the risk of developing schizophrenia.

But in left-handers the right half of the brain is dominant, and it is this side that seems to control negative aspects of emotion. It’s all relative, you see,” says Philip Corr, a behavioural neuroscientist at Swansea University, UK, noting that the differences in the brains of left and right-handers are usually slight.

However, he says handedness is not so much a predictor of personality as a great way to understand how emotions are handled in our brains.

Asymmetry is a fundamental feature of the human brain that is disrupted in many psychiatric conditions.” For more information contact: Dr Clyde Francks (Study Leader) Glaxo Smith Kline Email: clyde.2.francks (at) Phone: 39 0 Prof Anthony Monaco (Laboratory Head) Wellcome Trust Centre for Human Genetics University of Oxford Email: anthony.monaco (at) Phone: 1 3 07795 690173 Source : BMJ, doi: 10.1136/bmj.38572.440359. 26 Sept 2005) New research suggests that left-handed women may be more at risk from breast cancer.

The study, published online by the British Medical Journal, found left-handed women were more than twice as likely to develop premenopausal breast cancer as non-left handed women.The study is published on-line today by the journal Molecular Psychiatry.The research, which involved over 40 scientists from 20 research centres around the world, revealed a gene called LRRTM1; the first to be discovered which has an effect on handedness.The Left-Handers Club welcome these new findings, as a genetic link has long been considered the most likely cause of left-handedness yet a specific gene has until now remained elusive.This is the first potential genetic influence on human handedness to be identified, and the first putative genetic effect on variability in human brain asymmetry.They [left-handers] like to colour-code things, they like to write lists, it’s almost a way to alleviate their stress,” she says, adding that she is the classic example of the things that she finds in her work – “which is frightening”.