What to watch with IgG and Müdigkeit?

IgG antibodies are part of the adaptive immune response and can be elevated in chronic infections, autoimmune conditions, or allergies. However, a single IgG measurement is not a reliable marker for fatigue. Chronic fatigue has many potential causes – iron deficiency, thyroid dysfunction, sleep disorders, or post-viral syndromes. Direct-to-consumer IgG food sensitivity tests are often marketed as a solution for tiredness, but current evidence does not support their clinical utility. IgG levels can reflect normal immune exposure and do not necessarily indicate intolerance or disease. Caution: Do not base dietary or medical decisions solely on IgG results. Consult a healthcare professional for a proper fatigue workup. MyBody-X does not offer IgG testing; their DNA and blood tests focus on metabolism, fitness, and longevity markers with limited validation. Evidence: mechanistic/unclear.