Related by context. Frequent words. (Click for all words.) 64 pigmentation 59 elastin 58 collagen 58 pigment 58 melanocytes 57 glutathione 56 nitric oxide 55 reactive oxygen species 55 sweat glands 55 hair follicles 54 carotenoid 53 carotenoids 53 androgens 53 epidermis 53 enzyme 53 oxidative damage 53 androgen 52 UVB 52 retinol 52 follicles 52 protein 51 T lymphocytes 51 vitamin D. 51 mitochondria 51 amyloid plaques 51 thyroid hormone 51 oxidative stress 51 antioxidants 51 UVB rays 50 germ cells 50 polyphenols 50 chlorophyll 50 uric acid 50 follicle 49 Vitamin D 49 anthocyanins 49 epithelial cells 49 vitamin D 49 TGF beta 49 estrogen 49 melatonin 49 beta amyloid 49 isoflavones 49 lycopene 49 anti oxidants 49 cytokines 49 hair follicle 48 UV radiation 48 digestive enzymes 48 myelin 48 calcium 48 dermis 48 hormone estrogen 48 subcutaneous fat 48 immune cells 48 SIRT1 48 inhibitory 48 flavonoids 48 antibodies 48 immunoglobulin 48 UV exposure 48 choline 48 VEGF 47 adipose tissue 47 fatty acids 47 mitochondrial 47 lymphocytes 47 gene 47 osteoclasts 47 cortex 47 amyloid beta 47 amyloid 47 proteins 47 anti oxidant 47 secretion 47 fatty tissue 47 skin 47 UVA rays 47 proteases 47 neurogenesis 47 serotonin 47 ultraviolet rays 46 acetylcholine 46 macrophage 46 osteoblasts 46 glial cells 46 epithelium 46 adiponectin 46 fatty acid 46 UV rays 46 tumor suppressor 46 fibroblasts 46 Akt 46 metabolism 46 EGCG 46 vitamin B# 46 signaling pathway 46 amino acid 46 cytokine 46 neurones 46 thymus