Strangest thing about vitamin B12

Then there is this recently published study showing that in a lab dish vitamin B12 is degraded by solar radiation. Chile as a geographically long North-South country serves as an excellent learning lab in this regard. Solar radiation is stronger in the North, which is closer to the Equator. B12 deficiency among adults 65+ years of age was greater in the north (19.1%) and central and southern areas (10.5% and 5.7%). [Journal Photochemistry Photobiology Nov 2014]

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