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Several large-scale population studies have identified an association between unexplained high B12 and the subsequent diagnosis of solid tumors
this effect may be due to interference with erythrocyte maturation
B12 plays a major role in many key processes, including cell formation, brain and nerve function, energy production, and healthy cognition
Symptoms of low ferritin may include: Fatigue and weakness Brain fog or difficulty concentrating Dizziness or shortness of breath Headaches Brittle nails or hair loss Feeling cold all the time Beyond the symptoms list, sustained low ferritin has measurable downstream effects: it impairs thyroid hormone conversion (T4 to T3), reduces dopamine and serotonin synthesis, weakens immune cell function, and slows wound healing
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