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Some of them take a very long time to appear: the human liver can store up to five years' worth of vitamin B12! https://en.wikipedia.org/wiki/Vitamin_B12_defic
by threedaymonk 13y ago
Some of them take a very long time to appear: the human liver can store up to five years' worth of vitamin B12!
https://en.wikipedia.org/wiki/Vitamin_B12_deficiency https://en.wikipedia.org/wiki/Vitamin_B12_deficiency