Here are some groups of people who might benefit from B12 supplementation: Vegetarians and Vegans: Since B12 is primarily found in animal products, those who avoid meat, dairy, and eggs may be at risk of deficiency
In addition, for non-dyslipidemic patients the antioxidant enzyme deficiencies were: 33% for atrial flutter, 31% for various combined arrhythmias, 30% for sinus tachycardia, 29% for sinus bradycardia, 28% for ventricular extrasystole, 27% for atrial fibrillation and atrial extrasystole, and 18% for paroxysmal supraventricular tachycardia
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Results vary based on individual factors including skin type, diet, sun exposure, and baseline glutathione levels