(Serotonin levels) can be in a body.Logical formLearned from5 sentences. A serotonin may pertain-to persons.Logical formLearned from5 sentences. Medications can be (serotonin reuptake inhibitors).Logical formLearned from5 sentences. A serotonin can be in a body.Logical formLearned from5 sentences. (Serotonin levels) may be changed.Logical formLearned from5 sentences. Persons may have levels of serotonin.Logical formLearned from5 sentences. Variations can be in (brain levels) of serotonin.Logical formLearned from5 sentences. A brain may be deluged with serotonin.Logical formLearned from5 sentences. (Serotonin transporters) can be on neurons.Logical formLearned from5 sentences. A shortage can be constituted-of-or-filled-with serotonin.Logical formLearned from5 sentences. (Serotonin enhancers) can be for depression.Logical formLearned from5 sentences. A serotonin can be depleted.Logical formLearned from5 sentences. (Serotonin levels) may drop.Logical formLearned from5 sentences. A disregulation may affect a (serotonin system).Logical formLearned from5 sentences. Serotonin may undergo involvement.Logical formLearned from5 sentences.