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The pituitary gland at the base of the brain is the size of a green pea, also called the master gland sits in its own little chamber under your brain known as the sella turcica. It’s a part of your endocrine system and a messenger for your body, thus controlling behavior. The study of psychology and the endocrine system is called behavioral endocrinology, which is the scientific study of the interaction between hormones and behavior. e.g. Major glands: Adrenal or pancreas, Thyroid, Pituitary, Gonads.

Hormones regulate behaviors such as aggression, mating, and parenting of individuals. Hormones are involved in regulating all sorts of bodily functions, and they are ultimately controlled through interactions between the hypothalamus (in the central nervous system) and the pituitary gland (in the endocrine system). Imbalances in hormones are related to a number of disorders. e.g. obesity, gender dysphoria

Hypogonadism is a condition in which your gonads under-produce hormones. Gonads are your reproductive glands. In men, gonads are the testes. In women, they’re the ovaries. Because of hypogonadism, you can end up with lower-than-normal levels of testosterone and estrogen. Not to be confused with hypergonadism, which means increase. Either way, too little or too much will influence your mental and physical performance and character. e.g. anabolic steroids in athletes.

Reproductive Glands and the Endocrine System @ Johns Hopkins Medicine.

What is the treatment for hypogonadism? hypogonadism treated with replacement therapy will return hormone levels to normal. Hypogonadism occurs when your sex glands produce little or no sex hormones. Sex hormones help control secondary sex characteristics, such as breast development in women, testicular development in men, and your behavior.