Wonder if your teacher was on birth control.... we live in a society where almost 50% of the population has messed with their natural hormone levels virtually since puberty and the effects of that are apparently not extreme enough to bother addressing. Personally I've found that my diet and my blood sugar level has a much more dramatic effect on my emotional condition than my "supplementation".... but for good or bad, living with any excess for a long time will change a person.
Same here, blood sugar and diet are key to mental health, Processed foods with additives and other chemicals really fuck with me.
The key is to be aware of what factors are influencing your emotional well being and learning to control them.