If you look at the science, it’s clear that these nutrients aren’t in most of our diets — even really, really good and varied ones — in adequate amounts. (Because nobody eats giant piles of seaweed, algae, or dirt, and we don’t want to eat fish.)
And I’d say the vast majority of plant-based doctors and experts agree. But what about the other three mentioned in the articles — iodine, zinc, and K2?
They’re all worth considering, but to me less universally recommendable, because of a lack of convincing science and/or availability in diverse plant-based diets.
For example, I use iodized sea salt, so I get mine that way (not that weird — non-vegans get a lot of their iodine from the remnants of the cleaning products leftover on dairy processing equipment!).
I might eventually become convinced that zinc and K2 are important, but right now, when I weigh the available evidence of benefits against the potential risks and costs of supplementing — for my own family — it’s not a clear choice either way. I’ve taken both in the past and will probably continue to experiment with them, but for now, I don’t take them.
So there you have it.
For an even shorter version: if I could have a billboard (on Route B12, ideally) that every vegan would see as they drove by in their Prius, here’s what I’d put on it:
“Eat whole plants and take B12, D3, and DHA/EPA.”
I reserve the right to update my billboard as more science becomes available. :)
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