Study links hair dye, straighteners to increased risk of breast cancer

The study showed that 46,000 women with a family history of cancer who used permanent hair dye or hair straightener were found to have an overall increased associated risk of breast cancer.
1:00 | 12/05/19

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Transcript for Study links hair dye, straighteners to increased risk of breast cancer
Next tonight, the new study that got a lot of attention today involving women and breast cancer and the use of hair dyes and straighteners. So, we asked Dr. Jen Ashton to come in tonight. Reporter: Let's get right to it, David. Large study, 46,000 women with a family history of breast cancer who used permanent hair dyes or straighteners were found overall to have a 9% increase associated risk of breast cancer. When they looked at it by race, 45% increase risk for African-American women overall and if those women were frequent users of hair dye, that risk went up to 60% for African-American women. These were women with a risk to begin with. Reporter: Right. We know more study is needed and you wanted to put this into the proper con tekts. Reporter: First of all, this was a high risk population, so, the results may not apply to an average risk population. This study, again, was based on association, not cause and effect. And lastly, some previous studies, David, actually showed no increased associated risk, so, we need more research. All right, Dr. Jen, thank When we come back here, the

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