Male Hormones Control Differences in Mammary Gland Nerve Growth, Johns Hopkins University School of Medicine Study

Published: Dec 07, 2012

Johns Hopkins scientists have found a surprising mechanism that gives male sex hormones like testosterone control over the gender-specific absence or presence of mammary gland nerves that sense the amount of milk available in breast milk ducts.I n a Dec. 7 report on their discovery in Science, they say the hormones do the job by altering the availability of a nerve growth factor, called BDNF for short.

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