Rhonda Patrick· PhD
growth hormone and igf-1 enhance performance and here's how igf-1 is anabolic in that it enhances the growth and repair of skeletal muscle it increases lean muscle mass while decreasing adapost tissue igf1 acts as a neurotropic factor in the brain by increasing neurogenesis that's the growth of new brain cells and igf-1 also is neuroprotective which means it prevents your neurons from dying