I get it it’s the good mood hormone and you can feel down when you are low on it. Makes sense how it could be the cause of depression.
But how it can be related to brain making stressful thoughts? And forcing one to do compulsions for relief?
And why when you take SSRIs and your Serotonins reach a normal level, a significant reduction of symptoms occurs? I don’t get it.
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As already mentioned elsewhere, serotonin is multi-functional. While it might be associated with one major pathway or effect that it can have, almost no signaling molecule in the body is used the same way in every cell type or location, and very often they are involved in many different processes, even if the strength of their role will vary. Some even have opposing effects depending on the cell type.
Biology is complicated, and both the *brain* and theme of *signaling pathways* are one of the more complicated areas of biology out there.
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