Skip to main content

Moderate, Heavy Use of Chemical Hair Relaxer Linked to Uterine Cancer

Medically reviewed by Carmen Pope, BPharm. Last updated on Nov 2, 2023.

By Elana Gotkine HealthDay Reporter

THURSDAY, Nov. 2, 2023 -- Among postmenopausal Black women, moderate and heavy use of chemical hair relaxers is associated with an increased risk for uterine cancer, according to a study published online in the upcoming Dec. 15 issue of Environmental Research.

Kimberly A. Bertrand, Sc.D., M.P.H., from Slone Epidemiology Center at Boston University, and colleagues followed 44,798 women with an intact uterus who self-identified as Black from 1997 (when use of chemical hair relaxers was queried) until 2019. A total of 347 incident uterine cancers were diagnosed during follow-up.

The researchers found that the hazard ratio (HR) for uterine cancer associated with heavy use (≥15 years and at least five times/year) compared with never use or infrequent use (less than four years and no more than one to two times/year) was 1.18 (95 percent confidence interval [CI], 0.81 to 1.71). Among postmenopausal women, the HRs for moderate and heavy use compared with never/light use were 1.60 (95 percent CI, 1.01 to 2.53) and 1.64 (95 percent CI, 1.01 to 2.64), respectively. Regardless of frequency, the HR for ≥20 years of use was 1.71 (95 percent CI, 1.08 to 2.72).

"If the present results are confirmed, efforts to reduce exposure to these potentially harmful products -- such as by identifying safer alternatives to straightening hair, stricter regulation of cosmetic products, and policies prohibiting discrimination against natural hair (e.g., the CROWN Act) -- could represent important steps toward reducing racial disparities in this cancer type," the authors write.

Abstract/Full Text (subscription or payment may be required)

Disclaimer: Statistical data in medical articles provide general trends and do not pertain to individuals. Individual factors can vary greatly. Always seek personalized medical advice for individual healthcare decisions.

© 2024 HealthDay. All rights reserved.

Posted November 2023

Read this next

More Physical Activity Tied to Higher Odds of Hot Flashes

FRIDAY, May 31, 2024 -- Increases in physical activity increase the odds of menopause-related hot flashes, according to a study published online May 28 in Menopause. Sarah...

ASCO: Conjugated Equine Estrogen May Increase Risk for Ovarian Cancer

TUESDAY, May 28, 2024 -- Conjugated equine estrogen (CEE) taken alone for menopause may increase the risk for developing and dying from ovarian cancer, according to a study...

Fezolinetant Safe, Effective for Moderate-to-Severe Menopause Hot Flashes

MONDAY, May 20, 2024 -- Fezolinetant is safe and effective for moderate-to-severe vasomotor symptoms (VMS), according to a study presented at the annual European Congress of...

More news resources

Subscribe to our newsletter

Whatever your topic of interest, subscribe to our newsletters to get the best of Drugs.com in your inbox.