Maybe not so new but still not alot of evidence of a cure all. Some info is conflicting, serotonin increases energy where one wants to jump out of bed but then at night serotonin calms people down and then extra melatonin is made from serotonin and one nods off to sleep. Suppossedly also helps one keep a calm mood and lifts mood into a level that increases happiness. Also said to help reduce pain and even helps us lose weight. I would say my experience with ssris is that they greatly worsen sleep, feel overhyped up. stress seem to just flow off like a water off a ducks back but also can become quite numb which i think is part of the antianxiety, if one can live being like that??? Im trying to understand how serotonin helps sleep. The only thing i can find that helps are trytophan supps, maybe through increasing serotonin levels or maybe it increases melatonin levels?? If ssri's really worked then they would be an effective treatment for many with cfs/me. So why dont they seem to help so many of us?? So why do so many get better results with supplements like 5htp and tryptophan. Im interested to hear in others experiences and there opinions of serotonin being a cure all??