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This mechanism is particularly useful during exercise, especially steady-state cardio where fat becomes the primary energy source
Common causes include: Pernicious anaemia Malabsorption disorders (e.g., coeliac disease, Crohns) Chronic alcohol abuse Long-term use of antacids or metformin Vegan or vegetarian diet without supplementation 3
JAMA - J Am Med Assoc [Internet]
[1] These symptoms are typically mild to moderate in severity, occur most commonly during dose escalation, and tend to diminish over time as the body adjusts to treatment
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