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Graves' Disease

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Graves’ Disease

Graves’ disease (GD) is an autoimmune condition in which the immune system produces thyroid-stimulating immunoglobulins (TSI) — antibodies that bind to and activate TSH receptors on the thyroid gland, driving excess production of thyroid-hormones. It is the most common cause of hyperthyroidism in the United States (~80% of cases).

Clinical Features

  • All symptoms of hyperthyroidism (weight loss, palpitations, anxiety, etc.)
  • Graves’ orbitopathy (GO) — eye disease characterised by proptosis (bulging eyes), double vision, and orbital inflammation; a distinct complication that may require separate treatment
  • Thyroid enlargement (goitre)

Multiple sources highlight the role of diet and the gut-microbiome in GD:

  • Mouse models of GD/GO showed gut bacteria directly influence disease symptoms; antibiotics improved disease, and faecal material from GD/GO patients worsened it.
  • Gut microbiome diversity is reduced in GD/GO patients, but patterns vary by geographic region (reflecting different diets and lifestyles).
  • Insufficient evidence to recommend specific prebiotics, probiotics, or antibiotics as treatment yet.

GD co-occurs at higher rates with coeliac disease and other autoimmune disorders, suggesting shared genetic or immune pathways.

Dietary Implications

  • Limit iodine (especially seaweed, kelp, iodized salt) — excess iodine worsens the condition.
  • Gluten elimination: speculative but supported by a 2020 case study; trial may be worthwhile.
  • selenium supplementation: trials show reduction in thyroid antibody levels and benefit for thyroid eye disease (Graves’ orbitopathy). Does not improve thyroid function tests directly.
  • lemon-balm: laboratory and case-report evidence suggests it may inhibit TSI binding; no controlled clinical trials yet.
  • magnesium: higher magnesium levels may help control GD; data inconclusive.
  • carnitine: a trial found improvement in hyperthyroid symptoms, particularly irregular heartbeat.

Treatment

  • Antithyroid drugs (methimazole, propylthiouracil)
  • radioactive-iodine-treatment
  • Thyroid surgery
  • For Graves’ orbitopathy specifically: selenium supplements (large European study showed benefit at 6 and 12 months, no side effects)

Sources

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