Vitamin B-12 is an important vitamin that you usually get from your food
Last reviewed: June 21, 2026 Last updated: June 21, 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
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The method bypasses the digestive system, resulting in higher absorption and faster results
A 2004 study published in the American Journal of Obstetrics and Gynecology suggests vitamin B12 deficiency during pregnancy may increase spina bifida risk in the fetus/baby
Several large-scale population studies have identified an association between unexplained high B12 and the subsequent diagnosis of solid tumors