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- You have a medical condition that affects nutrient absorption (like Crohn's disease or celiac disease)

The following represents typical ranges used in supervised medical aesthetics and longevity programs

Vegans and vegetarians, for example, are at a higher risk of B12 deficiency because the main sources are animal products like meat, fish, and dairy

An elevated MMA strongly suggests functional B12 deficiency, even when serum B12 appears adequate

Some researchers administer the blend locally for tendon or joint-specific applications, while others use systemic administration for multi-site or whole-body recovery protocols