Vitamin B12 deficiency, despite requiring only tiny amounts, can significantly impair mitochondrial function. This impairment may lead to early symptoms such as fatigue and brain fog, which typically precede conventional deficiency signs. These effects could be mistaken for normal aging, masking underlying health issues caused by B12 shortage.
Vitamin B12 Deficiency May Mimic Normal Aging by Affecting Mitochondria

The Gist
“New research links vitamin B12 deficiency to mitochondrial dysfunction, explaining early symptoms like fatigue often mistaken for aging.”

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