On a biological level, love is the result of a healthy biochemical imbalance. Lovers' brains are flooded with a neurotransmitter – a molecule that carries messages between neurons – called dopamine . This is cooked in the limbic system, the part of the brain most involved in emotions. People with a well-adjusted neuroendocrine system will sooner or later fall in love.
It is unavoidable. Now, disorders such as depression and autism come hand in hand with hormonal imbalances at the brain level. For example, an overdose of prolactin in men and androgens in women alters the affective capacity . The same is true of certain psychosomatic disorders, such as alexitemia.
