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"Fatigue and brain fog are symptoms, not diagnoses, and they can be caused by B12 deficiency, thyroid dysfunction, iron deficiency, insulin resistance, sleep disorders, hormone imbalances, and many other conditions." Standard serum B12 tests can be misleading and so it is important to request methylmalonic acid (MMA) and homocysteine tests
J Asthma Allergy 9:112 Egan KB, Ettinger AS, Bracken MB (2013) Childhood body mass index and subsequent physician-diagnosed asthma: a systematic review and meta-analysis of prospective cohort studies
Mediterr J Hematol Infect Dis
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Focal Fat or Fat Sparing Fatty infiltration of the liver is common
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