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Permanent hair dyes linked to increased breast cancer risk

No causal relationship, so those who used permanent dye in the past shouldn't worry over it


Key points from article :

Permanent hair dyes and chemical straighteners linked to an increased risk of breast cancer.

Nine per cent increased risk of breast cancer, this risk is 45 per cent in African American women.

Risk is not associated with semi-permanent or temporary hair dye.

Can't make firm recommendations using these results, but it's better to avoid permanent hair dye.

Analysed data from 46,709 women enrolled in the Sister Study ranging in age from 35 to 74.

Research by National Institute of Environmental Health Sciences and NIH, published in International Journal of Cancer.

Mentioned in this article:

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Alexandra White

Stadtman Investigator at the National Institute of Environmental Health Sciences

Dale Sandler

Postdoctoral research scientist and chief of epidemiology branch at NIEHS

International Journal of Cancer

Official journal of Union for International Cancer Control (UICC) for medical professionals

National Institute of Environmental Health Sciences (NIEHS)

NIEHS research how environment affects human health.

National Institutes of Health (NIH)

Medical research agency that supports scientific studies

Paul Pharoah

A research scientist showing interest in public health medicine, cancer epidemiology, genetic epidemiology

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