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by dgordon
5802 days ago
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And that incredibly low standard is also how the FDA set the "recommended daily allowance." Similar things are true for most other vitamins and minerals, as I recall. Also, D2 causes overdose effects pretty easily, but you can take big multiples of the "RDA" in D3 (I think 10,000 IU/day for months for vitamin D deficiency has been mentioned) for quite a while without overdosing. |
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That's actually a problem, as people can become accustomed to taking large doses and then not understand why problems are occurring when they start way down the road.