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Questions tagged [hypervitaminosis]

Illness caused by excessive vitamin intake, almost certainly due to misuse of supplements.

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10 votes
1 answer

Are calcium supplements harmful compared to calcium in whole foods?

I'm trying to be vegan, but it seems that vegan foods lack sufficient calcium to meet the Recommended Daily Intake of 1000 mg/day. I'm wondering if I should take calcium supplements, but I'm worried ...
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10 votes
1 answer

Any studies linking vitamin B12, melatonin, and sleep

Is there a study out there that links vitamin B12 specifically with lowered or raised melatonin? And related to that, is there any relation to high amounts of B12, and lack of sleep or other sleep ...
middleagedgeezer's user avatar
8 votes
2 answers

Can too much B12 be harmful?

While I know that B12 is water-soluble vitamin and (as I understand it) it should be naturally expelled from the body, is this really the case even with continuously high intakes, eg. 1000mcg/day for ...
Alexander Rossa's user avatar