Alcohol may increase levels of serotonin.Logical formLearned from2 sentences. A (brain chemical serotonin) may be linked to alcoholism.Logical formLearned from2 sentences. Receptors can be for a (neurotransmitter serotonin).Logical formLearned from2 sentences. Serotonin may undergo poolings.Logical formLearned from2 sentences. A tryptophan may be converted to serotonin.Logical formLearned from2 sentences. Foods may increase (serotonin levels).Logical formLearned from2 sentences. Meals may increase (serotonin levels).Logical formLearned from2 sentences. A (serotonin system) may pertain-to a brain.Logical formLearned from2 sentences. A (neurotransmitter serotonin) may be implicated in a pathology of headache.Logical formLearned from2 sentences. A polymorphism can be in a (serotonin transporter gene).Logical formLearned from2 sentences. Persons can be with serotonin.Logical formLearned from2 sentences. Serotonin may act as a neurotransmitter.Logical formLearned from2 sentences. (Serotonin levels) can be unbalanced.Logical formLearned from2 sentences. Complex carbohydrates may increase (serotonin levels).Logical formLearned from2 sentences. A (protein content) of foods may inhibit (serotonin production).Logical formLearned from2 sentences.