![]() “This was a good, legitimate study,” says Dr. Ambrosone’s own research focuses on genetic and non-genetic causes of cancer and cancer survival, particularly in breast cancer. Roswell Park’s Christine Ambrosone, PhD, Chair of the Department of Cancer Prevention and Control, helps explain what the data means for women who color or straighten their hair. Frequent use of chemical straighteners was also associated with an 31% increased risk of breast cancer overall, with similar but weaker relationships when looking separately in white and black women. The research team found little to no increase in breast cancer risk for semi-permanent or temporary dye use. Lighter shades increased the risk by 46% for black women and 12% for white women. Darker dye shades were associated with a 51% increased breast cancer risk for black women and an 8% increased breast cancer risk for white women. ![]() While white women saw an 8% increased risk, routine coloring with permanent dye was associated with a 60% higher risk for breast cancer among black women.Īdditionally, dye color appeared to impact black and white women differently. But the biggest surprise was the difference between African-American/black women and white women. ![]() ![]() Investigators concluded that overall, women who used permanent hair dye regularly (every five to eight weeks) were 9% more likely to develop breast cancer than women who didn’t use permanent hair dye. The results are from the Sister Study, a research study conducted by the National Institutes of Health (NIH) over eight years and involving more than 46,000 women. Some women may also start ditching the dye as a result of findings published in December, 2019, linking use of hair dyes and chemical hair straighteners to increased breast cancer risk. In a movement that has trended on social media, women all over the world are #DitchingTheDye to embrace their natural hair color, save money and accept the changes that come with aging. ![]()
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