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That means your body needs it to carry out lots of important functions, including (1, 2): Red blood cell formation DNA synthesis Brain and nervous system functioning Energy production (metabolism) Immune system health Risk Factors for Vitamin B12 Deficiency Your body doesnt produce B12 on its own
While its main function is to carry out cellular respiration, a process that converts nutrients from food into ATP, there are many other functions mitochondria perform, including metabolic signaling, calcium regulation, autophagy (cellular clean-up) and apoptosis (cell death), neurogenesis (growth of new nerve tissue) and neuronal plasticity (aka neuroplasticity- our brains ability to grow and adapt), as well as the synthesis of other molecules (especially those in the immune system)
synthesized by certain bacteria Although the intestinal flora of humans is able to synthesize vitamin B 12 , humans are not able to absorb bacteria-generated vitamin B 12 since the location of synthesis (the colon) is too distal from the location of absorption (the small intestine)
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