Is this the first step to “Pathological Left-handedness” being called a disability? asks James S. Borthwick of www.Left-handersInternational.com
It has been reported that an Oxford University scientific team have discovered the first gene which appears to increase the odds of being left-handed. This team also believes carrying this gene may also slightly raise the risk of developing a psychotic mental illness such as schizphrenia.
The gene … LRRTM1, appears to play a key role in the control over which parts of the brain take control of specific functions as emotion and speech.
Our human brain is asymmetrical. In right-handers the left side of the brain usually controls language and speech while the right side controls emotions. In left-handed people the opposite is true and it is believed by the scientists that LRRTM1 is responsible for this.
Dr. Clyde Francks from Oxford University The next step would be to probe the impact on the development of the brain further. He also said that left-handed people should not be worried by the links between left-handedness and schizophrenia.
There are many factors, which make individuals more likely to develop schizophrenia, and the vast majority of left-handers will never develop a problem. “We don’t yet know the precise role of this gene,” Francks said.
We look forward to further research on this gene and to substantiate its role, James S. Borthwick added.