Hormone production, including testosterone, estrogen, and cortisol, is a foundational aspect of mental health.

“neurotransmitter production of hormone production not just testosterone and estrogen but things like cortisol prolactin and on and on so it's important to understand that if our goal is to be in the best possible mood given our life circumstances and to have the best possible mental health given our life circumstances and to improve our mood and mental health consistently over time that we have to pay attention to what I'm referring to here as the big six or the six pillars of mental health”