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Dig Dis Sci 2014

The benefits of vitamin B12 injections in the treatment of these, as well as serious issues including dementia and panic disorder, have come to light within the past twenty years

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They write: The risk was highest in women with a combined high intake of both vitamins, exhibiting an almost 50% increased risk of hip fracture compared with women with a low intake of both vitamins. However, they also explain that, Among women in the medium intake categories for both vitamins, risk was not significantly elevated. The scientists also note that higher levels of the B vitamins were associated with supplements, not dietary intake