A review of 15 studies (127,094 adults): vegans had the lowest urinary iodine and did not reach optimal status; seaweed caused excessive intake in some vegans.

Nutrients · 2020Open accessPMID 32486114

Key facts

Who was studied: Adult (≥18 y) vegans, vegetarians and omnivores in industrialised countries
Sample: 15 studies
Main result: Highest iodine intakes were in female vegans (1448.0 ± 3879.0 µg/day) and lowest in vegetarians (15.6 ± 21.0 µg/day); vegans had the lowest median urinary iodine.
Authors: Eveleigh ER et al.
Full text: PubMed Central (free)DOI 10.3390/nu12061606

Editorial summary by Vegan Guide based on the publication. This is not medical advice.

Study details

Limitations

Samples were not wholly reflective of the general population.
Recent studies were scarce.

Funding: BBSRC Doctoral Training Programme (University of Nottingham)

Conflict of interest: declared