Carpal tunnel syndrome, known for causing numbness and burning sensations in the hands and wrists, is often blamed on long hours typing at a keyboard. However, new research suggests the risk might depend more on a worker’s control over their job than on keyboard use itself.
A 1998 study led by Dr. David Nordstrom, a professor of epidemiology at Boston University, found no clear link between keyboard use and carpal tunnel syndrome. Instead, the study revealed that employees with the least control over their work had nearly three times the chance of developing the condition compared to those with more influence over their tasks.
The study also identified other risk factors that doubled the likelihood of developing carpal tunnel syndrome. These included obesity, not participating in sports, having a close family member with the condition, and previous diagnoses of musculoskeletal diseases such as lupus or arthritis.
Dr. Nordstrom emphasized that these findings are still preliminary but suggested several reasons why low job autonomy might lead to carpal tunnel syndrome:
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Stress from having to follow orders could increase muscle tension, which strains bones and nerves.
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Early episodes of pain may cause ongoing nervous system problems in employees with heavy workloads but little control.
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People under stress might be more aware of symptoms and more likely to seek medical help.
This research points to the importance of workplace environment and job control in preventing carpal tunnel syndrome, shifting attention away from just physical factors like keyboard use.
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