army1987 comments on Quantified Health Prize results announced - Less Wrong
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It seems lots of supplement manufacturers just kind of make it up as they go along.
Other warning signs that should get you to throw out particular multivitamins -- Vitamin E as d-alpha tocepherol only rather than mixed tocopherols, and selenium as a single form such as selenomethionine rather than selenium yeast or selenium amino acids.
I also suspect Vitamin A is similarly harmful in isolated form compared to the much more complex natural sources of it but don't really have any evidence on that.
IIRC at least some multivitamins contain at least part of their Vitamin A as carotene rather than retinol.
Yup, definitely, many multivitamins (particularly at the higher end) also contain complex forms of Vitamin E and selenium.