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Sunlight exposure Sunlight exposure influences BDNF through multiple pathways, including vitamin D synthesis, serotonin modulation, and circadian rhythm regulation

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the genuinely mixed VitaMIND and Finnish Vitamin D supplementation trials

Researchers have been studying it since the 90s, mostly in animal models, looking at whether it could accelerate healing in tendons, ligaments, the gut, and even the nervous system

[2] It is one of the few peptides that has crossed the boundary from laboratory research into widespread commercial skincare products, appearing in serums, creams, and post-procedure treatments marketed for anti-aging effects

European Journal of Pharmacology , 833, 160170