Talking of brain hormone, a special documentary "the newest study of the brain hormone" was aired on a Japanese television channel.
According to the study, all aspects of human behavior are determined by hormones produced in the brain.
For example, the decision you make about who you marry is in no way related to any sound reasons. Generally speaking, when you choose someone to marry, you may well consider; his/her face, figurer, money, career, his/her parents, families, blah, blah, blah. But "the considerations" have got nothing to do with the actual decision making. An unconscious part of the decision-making process in the brain determines everything. The brain determines everything its own way. And the hormones produced in the brain affect the unconscious part of the decision-making process.
That's why some of you end up marrying someone who is ugly and fat and broke and shabby and mother in law is terrible and brothers in law are criminals and so on. In short, you marry someone who is absolutely no good for you.
You have no idea why you did it, but somehow you made your decision. This is the result of the unconscious part of the decision-making process affected by the hormones produced in the brain.
But, the brain hormone enticed you to fall in love with that person will stop being produced in a few months or a year after your wedding. The excitement ends and you will found out what you have done saying "Oh my! How come I chose this person? Oh, it's the end of the world!" and tearing your hair out.
Not only the sexual decision-making but every aspect of human behavior is determined by the hormones produced in the brain.
For example, being affected by the brain hormones, most amateur day traders buy expensive, sell cheap and suffer huge losses. It is determined by forces outside awareness, so you cannot avoid it even when you are mentally armed with trading strategies. A favored few have the brain that produces different type of hormone which make a large profit, and buy a jet and do this and that. But still, the behavior is determined by the hormone and cannot be controlled. That's why sometime they cannot help doing "something not necessary" and end up in jail (e.g. in Japan). It was determined by forces outside awareness,
I have had the impression that each person see the world in a different way. Not different opinions but literally looks different. For example, when there is a mountain, for some people it looks beautiful and grand, and for some disgusting and horrible, and for some it looks not even a mountain.
It all comes down to the hormones produced in the brain. The types of the hormones produced in each person's brain are different from another person's.
Thus and so, every aspect of human behavior and feeling are determined by the hormones produced in the brain. And, what type of brain hormone you will have is programmed by DNA. That's why some keep failing in spite of their efforts, and some make a great success without any particular intention or mind to do so.