In other words, later in life, meat eating hinders B12 absorption
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Its found in high concentrations in animal products, especially red meat, and is essential for red blood cell formation, DNA synthesis, brain development, and nervous system function
Vitamin B12 deficiency and pernicious anaemia While pernicious anaemia accounts for a high proportion of cases of vitamin B12 deficiency, other causes include malabsorption or an inadequate dietary intake of vitamin B12 (see Table 1)[4,814]
However, in individuals with a confirmed or subclinical B12 deficiency, correcting that deficiency can lead to the following: Improved energy levels and reduced fatigue Better exercise tolerance and recovery More stable mood and motivation Improved sleep quality These are indirect but meaningful contributors to weight management