fatigue from vitamin b12 deficiency
fatigue from vitamin b12 deficiency
Vitamin B12 deficiency symptoms can affect energy, blood health, nerves, and cognitive function. Common vitamin B12 deficiency signs include fatigue, weakness, pale skin, shortness of breath, dizziness, glossitis, and appetite changes. B12 deficiency symptoms in adults may also involve brain fog, mood shifts, tingling, numbness, balance problems, and other neurological B12 deficiency symptoms, sometimes before anemia develops. Fatigue from vitamin B12 deficiency and anemia caused by vitamin B12 deficiency can resemble iron deficiency, thyroid disorders, or sleep problems, so symptoms alone are not diagnostic. Risk factors include limited animal-product intake, absorption disorders, older age, metformin, and acid-suppressing medications. Testing and individualized nutritional supplements can support appropriate treatment.