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Wednesday, January 28, 2004Women who have been coloring their hair for 24 years or more have a higher risk of developing a cancer called non-Hodgkin lymphoma, U.S. researchers reported on Friday. They said their study of 1,300 women could help explain a mysterious rise in the number of cases of the cancer that affects the lymphatic system. Writing in the American Journal of Epidemiology, they said women who dyed their hair starting before 1980 were one-third more likely to develop non-Hodgkin lymphoma, or NHL, and those who used the darkest dyes for more than 25 years were twice as likely to develop the cancer. ....Zheng and colleagues studied 600 Connecticut women who had NHL. They were asked to specify what hair coloring products they might have used and when. They were compared to 700 healthy women. The Yale University researchers did not find any larger risk of cancer in women who started using hair dye in 1980 or later. 'This could reflect the change in hair dye formula contents over the past two decades, or indicate that recent users are still in their induction and latent period,' said Yawei Zhang, who also worked on the study. Or it could be because women who began dying their hair before 1980 are older than those who began using hair dyes more recently. (Non-Hodgkins lymphoma is more prevalent in those over 50. posted by Sydney on 1/28/2004 01:59:00 PM 0 comments 0 Comments: |
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