A member asked:

Male breast cancer and testosterone supplementation?

4 doctors weighed in across 2 answers

Risky: Most experts are concerned about testosterone replacement in male breast cancer. For most men it is a hormone driven cancer. There is some conversion of testosterone to estrogen that may stimulate growth of breast cancer cells.

Answered 7/8/2015

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What is the question: Asking if testosterone causes male breast cancer or increases its risk? Asking if testosterone should be taken by a man with breast cancer? Should not take hormone supplements if one has male breast cancer without conferring with your oncologist first.

Answered 8/18/2012

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