Carpal Tunnel Syndrome

According to Harvard:

The popular belief that excessive computer use causes painful carpal tunnel syndrome has been contradicted by experts at Harvard Medical School. According to them, even as much as seven hours a day of tapping on a computer keyboard won't increase your risk of this disabling disorder. The pain, numbness, and tingling are more common in those who do assembly-line work in industries such as manufacturing, sewing, cleaning, or meatpacking. Genes account for about half the cases. Women are more likely than men to suffer the syndrome. Additional factors involve weight, pregnancy, and some diseases. Being overweight doubles the risk, according to several medical studies.