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Last reviewed: May 14, 2026 Last updated: May 14, 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
Resection of the gastrointestinal tract was the definite cause although some of these patients had other medical conditions which might have played a role in the pathogenesis of the vitamin B 12 deficiency
Regarding non-motor symptoms in PD, Vit B12 has been individually linked to cognition and is used as a therapy for Vit B12 related cognitive impairment (McCarter et al
Supports Brain Function
Research published in Journal of Clinical Biochemistry and Nutrition indicated that methylcobalamin leads to higher and more sustained tissue retention compared to cyanocobalamin, especially in neurological tissues
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