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The medications most commonly associated with B12 deficiencies include metformin (diabetes), antacids, anti-ulcers, blood pressure, cholesterol meds, and birth control pills (12, 13)

Same principle

In one study published in the Journal of Clinical Endocrinology & Metabolism, a year of IGF-1 treatment increased circulating total IGF-I levels levels but failed to improve bone density, body composition, memory, or mood, underscoring that higher hormone levels on lab tests do not always translate into meaningful health benefits

Longer telomeres could mean more cell divisions

May not be absorbing enough B12 from food