Many people get diarrhea when they take antibiotics for long durations. Additionally, the dry weight of human feces is about 25-50 percent gut bacteria.

What testosterone really does is when your status is being challenged, testosterone makes you do whatever you need to do to maintain status. You can have an economic game where people get status by making generous offers and give people testosterone and they become more generous in the game. In other words, if you shot up a whole bunch of Buddhist monks with testosterone, they would run amok doing random acts of kindness all over the place.

Testosterone doesn’t make you aggressive

Anything by Janes Combat Simulations.