Related by context. Frequent words. (Click for all words.) 79 stress hormones 78 cortisol 77 cortisol levels 67 serotonin 63 dopamine 63 oxytocin 62 hormone 60 endorphins 58 ghrelin 58 norepinephrine 57 leptin 57 C reactive protein 57 arousal 56 thyroid hormone 56 testosterone 55 blood glucose levels 55 estrogen 55 blood sugar 55 sexual arousal 54 melatonin 54 BDNF 54 neurotransmitter 54 cognitive functioning 54 histamine 54 hormones 54 androgens 54 caffeine intake 53 neurotransmitters 53 nitric oxide 53 glucose metabolism 53 glutamate 53 uric acid 52 hormonal 52 physiological 52 depressive symptoms 52 estradiol 52 IgE 52 cytokines 51 caffeine 51 secretion 51 insulin resistance 51 cognitive function 51 interleukin 51 homocysteine 51 insulin sensitivity 50 triglyceride levels 50 glucose 50 cognitive functions 50 nicotine 50 metabolism 50 cognition 50 impulsivity 49 fatty acid 49 amygdala 49 GABA 49 LDL cholesterol 49 systolic blood pressure 49 HDL cholesterol 49 triglycerides 49 lactate 49 cognitive 49 adrenal glands 49 progesterone 49 hypothalamus 48 oxidative stress 48 physiologically 48 ovulation 48 sleep disturbances 48 psychological distress 48 Stress 48 stress 48 diastolic blood pressure 48 metabolic 48 polyphenols 48 libido 48 flavonoids 48 alertness 48 bone density 48 irritability 47 Testosterone 47 amyloid beta 47 fatty acids 47 depression anxiety 47 gene variant 47 Hormone 47 cholesterol 47 cytokine 47 androgen 47 belly fat 47 beta amyloid 47 Caffeine 47 lung function 47 folate 46 hippocampus 46 Nicotine 46 inhibitory 46 anti oxidant 46 menstrual cycle 46 stressful situations 46 prefrontal cortex 46 pheromones