What is the deal with parabens?

Parabens are preservatives that are commonly used in skin care products.  They have come under fire by some groups in recent years because they have weakly estrogenic activity.  That means that they have qualities that weakly mimic estrogen, one of the predominant female hormones.  A few small studies have found traces of parabens in breast cancer specimens.   The methodology of these studies has been criticized by numerous scientists.

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