http://www.medicalnewstoday.com/articles/240324.php

A new study led by the University of Reading in the UK that examined breast tissue samples from 40 women who underwent mastectomies for breast cancer, found they contained widespread traces of parabens, preservatives commonly used in deodorants, make-up, body lotions, moisturisers and many other cosmetic products. Although the study does not prove that parabens cause or even contribute to the development of breast cancer, it raises questions about their use.