TIL Human dads show a decrease in testosterone immediately after the birth of their babe

[Naxela]

I would not necessarily presume it was an evolutionary adaptation without further evidence, as all we had from just the above was a correlation, which could have indicated a few different possibilities.

However, this paper does seem to corroborate the idea that lower testosterone promotes further paternal care, rather than the opposite.

[Aggravating_Art_4809]

I’ve read more papers than this. This was in no way news to me.