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It takes several years to completely deplete your livers stores of B12, so people who have recently started a vegan or vegetarian diet may still have moderate vitamin B12 levels.[ref] Dietary sources: Foods that are highest in B12 include:[ref] beef liver mussels lamb caviar chicken livers High Homocysteine and B12: Homocysteine levels: If your homocysteine levels are high and you carry the MTHFR or MTRR reduced function variant above, supplementing with vitamin B12, methylfolate, riboflavin, and B6 may help to lower your levels.[ref][ref][ref] Interaction with alcohol: Alcohol is metabolized into acetaldehyde, which is toxic and inhibits methionine synthase (MTR)
Cycling protocols vary based on injury severity and goals
Antioxidant and oxidative enzyme adaptations to vitamin E deprivation and training
doi: 10.1016/j.acpain.2007.09.001
