Multivitamins Won't Kill You
so perhaps they’ll make you stronger - a new vitamin supplementation study demonstrates a “sick-user effect” - those who never took vitamins but suddenly started may have done so because they became seriously ill. This reverses my view based on past studies that multivitamins probably don’t help (though I’d continued taking mine, since the evidence was mixed).
The hazard ratio for baseline vitamin users is incredibly good (.58), which makes me assume that they haven’t controlled for all the confounds, e.g. conscientiousness.