Higher NAD+ levels and better mitochondrial function mean cells can respond more robustly to anabolic signals
B12 shots are massive doses of the water-soluble vitaminfound in foods such as shellfish, beef liver, and fortified breakfast cerealsthat is essential for neurological function, red blood cell formation, and DNA synthesis
so it should be addressed separately
Role of Vitamin B12 in Boosting Immunity Vitamin B12 is intricately linked to immune system function
Clinical deficiency with clearly low blood levels affects a smaller percentage, but a much larger group falls into a gray zone where levels are low enough to cause subtle symptoms without triggering an obvious diagnosis
[27] Additionally, anyone with Lebers hereditary optic neuropathy (a rare inherited eye disease) must avoid cyanocobalamin injections, since B can precipitate rapid worsening of that condition