What is Serotonin
Serotonin is a hormone that acts as a neurotransmitter on the central nervous system, that is, as a "messenger" of subjective sensations that travel from one nerve cell to another in order for the body to store information and react accordingly. More precisely, serotonin sends messages to the brain concerning appetite, thirst, sexual desire and fatigue, that is, a whole series of perceptions that condition the general mood, triggering precise emotional states in the person. But his work also embraces the regulation of the sleep-wake cycle, intervenes in the regulation of intestinal peristalsis, together with thrombin in the aggregation of platelets for the regulation of coagulation, promotes the release of breastfeeding hormones, prolactin and oxytocin and perception of pain. It also appears, thanks to a study carried out on male laboratory mice, that serotonin also affects heterosexual sexual preferences. It is synthesized starting from an essential amino acid, tryptophan, which the human body does not spontaneously produce and for this reason it must forfeit from the outside with food.
When natural serotonin lowers
In order to maintain a state of well-being, serotonin levels should remain in the range of 101 to 283 ng / ml. They are measured by taking venous blood, but specific tests are rarely required for a suspicion of lowering; more frequently, however, they are required to measure any peaks, for which some particular forms of cancer may be responsible. It is essential that the basal levels of serotonin remain in the reference range, since lowering it causes significant and numerous disorders; it can, for example, increase worry, anxiety and irritability, which, taken to the extreme, can lead to panic attacks with isolation and subsequently depression. It is not uncommon, in fact, to find low levels of this neurotransmitter in clinically depressed subjects. A low serotonin rate also affects sleep, causing disturbances related to the sleep-wake cycle, to appetite, which appears dysfunctional and triggers the so-called "nervous hunger"; it also causes premature ejaculation, memory and personality disorders, migraine, hypertension, and in severe cases, fibromyalgia.