Thyroid hormone modulation therapy reduces clinical symptoms of Graves disease by restoring euthyroid hormone levels.

Study: THE PREVALENCE AND ASSOCIATED RISK FACTORS OF REBOUND HYPERTHYROIDISM IN GRAVES’ DISEASE AFTER ANTI-THYROID DRUG DOSE REDUCTION (PARAGON STUDY)

This study shows that pills used to lower too-high thyroid hormone levels work for most people with Graves disease, keeping their hormones normal and symptoms under control. Sometimes the hormones go too high again, but that’s rare and happens mostly in people who started with very high levels.

Study: Three basic patterns of changes in serum thyroid hormone levels in Graves’ disease during the one-year period after radioiodine therapy

This study didn’t give people thyroid pills, but it showed that after treating Graves’ disease with radiation, most patients’ hormone levels eventually settled back to normal — which is exactly what the claim says should happen to make people feel better.

Study: Dramatic Response to Cholestyramine in a Patient with Graves' Disease Resistant to Conventional Therapy

This study found that adding a special medicine (cholestyramine) to regular treatment helped a patient with overactive thyroid return to normal hormone levels and feel better. It shows that getting thyroid hormones back to normal—even by a different method—can fix the symptoms.

Study: OR31-08 The FcRn Inhibitor Batoclimab Rapidly Normalizes Thyroid Function and Improves Clinical Outcomes in Graves’ Disease

This study didn’t use standard thyroid meds, but it still fixed the overactive thyroid by calming the immune system — and as a result, patients’ symptoms like fast heartbeat and anxiety got better. So yes, getting hormone levels back to normal helps, no matter how you do it.