Also see: Intestinal Serotonin and Bone Loss Serotonin and Melatonin Lower Progesterone Role of Serotonin in Preeclampsia Maternal Ingestion of Tryptophan and Cancer in Female Offspring Melatonin Lowers Body Temperature Tryptophan, Sleep, and Depression Carbohydrate Lowers Free Tryptophan Gelatin > Whey Serotonin, Fatigue, Training, and Performance Gelatin, Glycine, and Metabolism Whey, Tryptophan, & Serotonin Omega [...]