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The Evidence

Page 08

Zinc on a vegan diet

Plants have zinc; phytates make you absorb less of it. The fix is more intake plus a few kitchen tricks that free the zinc up.

This is a summary of the cited evidence, not medical advice.

  • RDA (adults) 8-11 mg/day
  • Why aim higher Phytates cut absorption
  • Best sources Legumes, seeds, whole grains, tofu

The short version

Zinc is an absorption story, not an intake story. Plenty of plant foods carry zinc, but the same foods carry phytates that hold onto it, so less crosses into you. The fact sheet is specific.

Primary source 01 / 02

Beans, nuts, and whole grains also contain zinc, but the bioavailability of zinc from these foods is lower than that of animal foods.

NIH Office of Dietary Supplements US National Institutes of Health Zinc: Fact Sheet for Health Professionals, 2024

How much less varies with how plant-heavy the meal is, and it is a wide range.

Primary source 02 / 02

The amount of zinc absorbed from food ranges from 5% to more than 50%, depending on the amount of plant-based foods (and thus of phytate) in the diet [3].

NIH Office of Dietary Supplements US National Institutes of Health Zinc: Fact Sheet for Health Professionals, 2024

Beating phytates in the kitchen

This is a solvable problem with ordinary cooking. Soaking beans, sprouting grains and legumes, and fermenting (leavened bread, tempeh) all cut phytate and free up more zinc. Because the loss is real, guidance often suggests vegans aim somewhat above the standard target and lean on the better sources: legumes, seeds, whole grains, and tofu.

Frequently asked

Do vegans need more zinc than meat-eaters?

Often yes. Because phytates in plant foods lower zinc absorption, vegans are commonly advised to aim above the standard RDA and use soaking, sprouting, and fermenting.

What are the best vegan zinc sources?

Legumes, seeds (especially pumpkin), whole grains, and tofu. Preparing them by soaking, sprouting, or fermenting improves how much zinc you absorb.

The primary sources

The documents this page quotes. Read them yourself.

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