Related by context. Frequent words. (Click for all words.) 76 cortisol 71 endorphins 70 serotonin 66 dopamine 65 oxytocin 64 cortisol levels 61 neurotransmitters 61 hormones 61 hormone 60 norepinephrine 58 neurotransmitter 58 nitric oxide 58 histamine 57 acetylcholine 57 cytokines 57 adenosine 56 adrenal glands 56 estrogen 56 ghrelin 56 hormonal 56 glutamate 56 oxidative stress 55 physiological 55 arousal 55 Dopamine 55 melatonin 55 BDNF 55 leptin 55 thyroid hormone 54 sexual arousal 53 pheromones 53 stress 53 metabolism 52 GABA 52 amygdala 52 stressors 52 metabolic 51 androgens 51 secretion 51 physiologically 50 stressful situations 50 insulin resistance 50 Hormones 50 toxins 50 fatty acids 50 secretions 50 testosterone 50 mitochondria 49 glucose metabolism 49 cytokine 49 uric acid 49 progesterone 49 immune cells 49 Hormone 49 amyloid beta 49 C reactive protein 48 estrogens 48 flavonoids 48 neurons 48 hypothalamus 48 lactate 48 inhibitory 48 inflammation 48 anti oxidants 48 blood sugar 48 homocysteine 48 abdominal fat 47 blood vessels 47 blood glucose levels 47 belly fat 47 visceral fat 47 ovulation 47 lipids 47 synapses 47 caffeine intake 47 cognitive functions 47 libido 46 ion channels 46 antioxidants 46 Estrogen 46 IgE 46 insulin sensitivity 46 polyphenols 46 caffeine 46 nerve cells 46 reactivity 46 estradiol 46 glucose 46 circadian rhythms 46 bloodstream 46 brain 46 adrenaline 46 stomach acid 45 circadian rhythm 45 physiologic 45 interleukin 45 adipose tissue 45 protein synthesis 45 hair follicles 45 Stress 45 endocrine