https://www.nytimes.com/2022/10/17/health/hair-straighteners-black-women-cancer.html
Women who use chemical hair straighteners frequently could have a higher risk of developing uterine cancer than women who have never used the products, according to new findings from a national study that has followed nearly 34,000 U.S. women for more than a decade.
The study did not establish a cause-and-effect relationship between hair straighteners and cancer of the uterus, a form of reproductive cancer that has been increasing in incidence among women in recent years, especially among Black women.
For women in the study who had never used hair straighteners, the risk of developing uterine cancer by the age of 70 was 1.64 percent, the research found, while the rate for frequent users of straighteners was more than doubled at 4.05 percent.