Other Antioxidant Vitamins Retinoic acid (RA), an active metabolite of retinol (vitamin A), has been shown to have neurotrophic effects and is able to induce upregulation of nerve growth factor (NGF), low-affinity p75 NGF receptors, and high-affinity receptors for neurotrophin-specific tropomyosin-related kinase (trk) [83, 84]
In fact, its thought that up to 90% of people following these diets have a deficiency
doi:10.1007/s00011-013-0671-7 Plummer JL, Smith BR, Sies H, Bend JR (1981) Chemical depletion of glutathione in vivo
Research suggests 5 to 10 grams daily of supplemental glycine (achievable through collagen peptides or bone broth ) can help cover the shortfall in modern diets
There are more nerves in the muscle in the thigh than in the deltoid muscle, and it is easier to find the safe place to do the injection in the upper arm (which is why this is a common used place to give vaccinations i.m.)
Combination therapy: an upcoming paradigm to improve kidney and cardiovascular outcomes in chronic kidney disease