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Vitamin B12 is a water-soluble vitamin that plays an important role in red blood cell formation, cell metabolism, nerve function, production of DNA, and is one of the most common nutrient deficiencies in the world
Even meat-eaters can experience deficiency due to poor absorption, which often relies on a stomach-produced protein called intrinsic factor
Any discussion of biological activity refers solely to laboratory, in vitro, or preclinical research
10.18637/jss.v036.i03 61 YamaneK.UsuiT.YamamotoT.TsukamotoT.SomaY.YoshimuraN.et al (1995)
Most people notice the first changes in physique and body circumferences after about 2-4 weeks of systematic use, while maintaining healthy eating habits
(December 2007)
