What many people do not understand is that serotonin also plays a role in gastrointestinal disorders. In fact, the majority of our serotonin is produced in the gut, roughly 95%. Serotonin is produced in the enterochromaffin cells (EC) in the intestinal mucosa.Serotonin is produced, and then it bonds with its receptors.hat many people do not understand is that serotonin also plays a role in gastrointestinal disorders. In fact, the majority of our serotonin is produced in the gut, roughly 95%. Serotonin is produced in the enterochromaffin cells (EC) in the intestinal mucosa.
Early signs of mono in teens: 1  Early symptoms of viral infectious mono disease in teens are similar to flu symptoms. 2  Fever with shivering. 3  Teens may get headaches, severe fatigue, and pain in the muscles.  Sore throat with swollen tonsils, a common flu symptom, is also seen in mono.
77 Followers. A. Yes, you can, but very few people do. Mononucleosis is usually caused by the Epstein-Barr virus (EBV). Symptoms usually include fever, swollen and painful tonsils, and enlarged lymph nodes. Fatigue and low energy can last for weeks or months.nfection by EBV generally results in lifelong immunityâyou can only have EBV mono once. Thereâs also a less common form of mononucleosis, caused by infection by cytomegalovirus (CMV). In one study of people with mono, about one out of seven had mono caused by CMV; the rest had typical EBV mononucleosis.