Related by context. Frequent words. (Click for all words.) 68 hormone leptin 68 ghrelin 67 orexin 66 leptin 64 neurotransmitter dopamine 62 chemical dopamine 62 cortisol 61 NPY 61 serotonin 60 PYY 60 dopamine 60 noradrenaline 60 dopamine receptors 60 chemical serotonin 58 stress hormone cortisol 58 Leptin 58 Cortisol 58 norepinephrine 58 adenosine 58 satiety 57 vasopressin 57 stress hormones 57 insulin secretion 57 inflammatory cytokines 56 melatonin 56 arachidonic acid 56 glutamate 56 glucocorticoid 56 adiponectin 56 glutamine 56 protein 55 brain derived neurotrophic 55 neuronal activity 55 interferon gamma 55 aldosterone 55 hormone insulin 55 thyroid hormone 54 histamine 54 GABA 54 hepcidin 54 PPAR gamma 54 nitric oxide 54 hypothalamus 53 skeletal muscles 53 neurotransmitters 53 gastric acid 53 angiotensin II 53 phenylalanine 53 nitric oxide NO 53 cortisol levels 53 fructose 53 neurotransmitter 53 acetylcholine 53 hormone 53 arginine 53 TLR4 53 pro inflammatory cytokines 52 Dopamine 52 AMPK 52 BDNF 52 tryptophan 52 NMDA receptors 52 linoleic acid 52 female hormone estrogen 52 insulin hormone 52 glutathione 52 IgA 52 insulin 52 chemical messengers 52 prolactin 52 Fructose 52 calcitriol 51 secretion 51 thyroid hormones 51 signaling molecule 51 cytokine 51 vitamin B6 51 Oxytocin 51 cytokines 51 ceramide 51 Melatonin 51 conjugated linoleic acid 51 thiamine 51 metabolism 51 prostaglandins 51 mice genetically engineered 51 glucose 50 wakefulness 50 excitability 50 p# protein 50 abdominal fat 50 retinoic acid 50 deficient mice 50 REM sleep 50 Naltrexone 50 metabolic 50 interleukin 50 midbrain 50 amino acid 50 glycolysis 50 SIRT1