Absorbed B12 has entered circulation Factors Affecting the Increase: Absorption efficiency: Normal intrinsic factor: ~50% absorption of dietary B12 From 5 mcg in food ~2.5 mcg absorbed Baseline B12 status: If deficient, the body retains more If replete: excess excreted quickly Individual variation: Gastric acid production Intrinsic factor levels Intestinal health Conclusion: A single meat meal 12-24 hours before testing can cause a small (10-20%) increase , but usually not enough to dramatically change the interpretation Scenario 3: Regular Meat Eating for Days/Weeks Timeline: Baseline: B12 = 300 pg/mL Intervention: Eat red meat daily for 2 weeks Retest: After 2 weeks Expected Result: Moderate increase 350-450 pg/mL (depending on baseline status) Why
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It appears to normalize NO production increasing it where needed for healing and reducing it where excess contributes to inflammation
Behavioral and autonomic correlates of the tactile evoked allodynia produced by spinal glycine inhibition: effects of modulatory receptor systems and excitatory amino acid antagonists
Nutritional Deficiencies and Lipid Peroxidation Nutritional deficiencies, particularly vitamin D deficiency, exacerbate sarcopenia by increasing lipid peroxidation and negatively impacting skeletal muscle function
Ma W, Heianza Y, Huang T, Wang T, Sun D, Zheng Y, et al