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Key Takeaways Vitamin B12 is essential for red blood cell production, DNA synthesis, and brain function, with dietary sources primarily from animal products, making supplementation vital for vegetarians and vegans

Last reviewed: June 15, 2026 Last updated: June 15, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations

The appropriateness of statistical tests was ensured by examining data distribution and approximate homogeneity of variance

It is generally a cross-pollinated crop due to self-incompatibility [70]

Too much B12 is rare, but always follow your doctors guidance