Does your daily skincare routine involve the application of a product containing estrogen?
Many women may not know if they are smoothing on estrogen ingredients, according to new research presented at a breast cancer symposium in San Antonio, Reuters reports.
Speaking at the conference, Dr. Adrienne Olson of Breastlink warned women who suffer from estrogen-receptive positive breast cancer to steer clear of moisturizers containing estrogen – and suggested that they may be dangerous for other women as well.
She and her team tested 16 moisturizers that are widely available in the U.S. and found that although none of the products mentioned estrogen content, six of them contained estrone or estriol.
Olson said that women whose breast cancer is driven by estrogen may be absorbing more of the hormone than they think.
In fact, she explained that the body absorbs more estrogen when it is applied to the skin than it does when it is taken orally.
Olson also raised the concern that women who do not have breast cancer may be raising their risk of the disease by exposing themselves to these moisturizers over the long term.
Previously, some scientists have drawn attention to the inclusion of parabens – preservatives that can mimic estrogen – in beauty products, suggesting that there may be a link with breast cancer.