[dragonwriter]

> especially considering it's in direct contradiction to consensus medical advice

The RDA, in general, is not necessarily the same as current consensus medical advice. In fact, ISTR that it has actually been clearly established that the RDA for Vitamin D was, given it's premises, based on erroneous calculations, and that there is broadly accepted clinical evidence that it is too low, but the government just hasn't acted to update it.

[TameAntelope]

We're not talking a few thousand IU above RDA, the person I replied to is 10x higher than the "Tolerable Upper Intake Level":

> The Tolerable Upper Intake Level is the maximum daily intake unlikely to cause harmful effects on health. The UL for vitamin D for adults and children ages 9+ is 4,000 IU. [0]

[0] https://www.hsph.harvard.edu/nutritionsource/vitamin-d/