Research conducted by American biologists and chemists suggests a link between the use of dyes and hair straighteners and the increased risk of breast cancer in both white and black women.

This is stated in an article published on Thursday, December 5, by the scientific journal International Journal of Cancer.

The study analyzed data 47. 000 American women, 2. 794 of which were diagnosed with breast cancer. Scientists see the reason in the hormones and carcinogens that make up cosmetics.

Experiments show that some of the aromatic amines used in paints are toxic and carcinogenic, newsru notes. co. il.

Alexandra White, a fellow at the U.S. National Institutes of Health, and her colleagues studied data from the Sister Study, a large-scale study of the causes of breast cancer in women aged 35 to 74 years.

Project participants - 50. 000 women whose sisters were diagnosed with breast cancer. Using a related sample allows you to control and differentiate genetic factors and environmental influences..

A total of 47.

650 women, each of whom during this period used paint or hair straighteners in a ratio of 55% and 10%.

Scientists paid special attention to the racial affiliation of the participants: African-American, the owner of tough and cool curly black hair, often by such means.

Over eight years of observation, it turned out that women who used hair dye had a higher risk of developing breast cancer: for black people - by 45%, and for white - 7%. The use of hair straighteners increased the risk of developing breast cancer by 18% regardless of skin color.