First, routine screening for vitamin B12 deficiency should be incorporated into primary care for high-risk populations such as older adults, women of reproductive age, vegetarians, and patients with diabetes or chronic use of metformin or proton pump inhibitors
Testing MTHFR and other relevant genetic markers can identify these individuals, though routine genetic testing for b12 supplementation decisions remains controversial
The Journal of Clinical Endocrinology and Metabolism, 59 (1), 127-132
The profound fatigue, unpredictable heart rates, and cognitive fog are not just "in your head"they are the direct result of measurable physiological disruptions, including severe oxidative stress, mitochondrial damage, and systemic glutathione depletion
Ashley Maldonado31 March 2026Trustindex verifies that the original source of the review is Google.Denise was amazing