Research
Micronutrients & recovery
Vegetarians are at a significantly higher risk of Vitamin B12 deficiency compared to non-vegetarians, with deficiency rates ranging from 11% to 90% depending on the demographic subgroup.
If you are vegetarian, especially if you are pregnant, elderly, or raising children, you should monitor your Vitamin B12 levels. Deficiency is common and can be masked by high folate intake. Do not assume your diet provides enough B12; consider using nori or supplements to prevent long-term health risks like neuropathy and anemia.
StrongSupportsVERY_HIGH confidence
Vegetarians are at a higher risk of Vitamin B12 deficiency than non-vegetarians [8]. The frequencies of the deficiency among vegetarians were estimated as 62%, 25%–86%, 21%–41%, and 11%–90% in pregnant women, children, adolescents, and elderly subjects, respectively...
Why this rating
Based on a review of 18 reports evaluating B12 status in vegetarians.
Source
Vitamin B12-Containing Plant Food Sources for Vegetarians
Fumio Watanabe et al. · Nutrients · 2014
DOI 10.3390/nu6051861
narrative_reviewCited 254×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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