Daddy tear-est?: … according to the Mayo Clinic Proceedings, June 2001, expectant fathers’ hormones fluctuate around childbirth. All together now: Awwwwwww! (link to PDF file)

This population of expectant fathers had lower testosterone and cortisol levels and a higher proportion of samples with detectable estradiol concentrations than control subjects. The physiologic importance of such hormone changes is not known, but these hormones are known to influence maternal behavior.

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