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Patients with significant comorbidities, those taking multiple medications, or those with complex medical histories may be underrepresented in clinical trials
If you follow a vegan or vegetarian diet, have digestive issues, or take certain medications, you may be at higher risk of B12 deficiency
Some supplements can affect how the body absorbs other supplements, making them less effective or putting you at risk of adverse effects or overdoses
They are more likely to have stomach and digestive problems
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