Links between deodorants and breast cancer refuted but more information needed: Study
 

A chemical present in cosmetics, food products and pharmaceuticals has been found in tissue samples from 40 women with breast cancer. A number of studies since 1998 have raised concerns about the potential role of these chemicals called parabens in breast cancer as they possess estrogenic properties. Estrogen is known to play a central role in the development, growth and progression of breast cancer.

More...