Graves' Disease & Your Period: How Hyperthyroid Affects Cycles
Graves' disease causes hyperthyroidism, which can make periods lighter, shorter, less frequent, or stop entirely. The excess thyroid hormone disrupts ovulation and hormone balance. Treating Graves' usually restores normal cycles over time.
Graves' and your cycle
Excess thyroid hormone affects reproductive hormones.
- Periods become lighter, shorter, or infrequent.
- Some women stop menstruating entirely.
- Ovulation may be disrupted, affecting fertility.
- Treatment (medication, radioactive iodine, or surgery) restores cycle regularity.
Track how you feel and spot the pattern
PhaseBloom logs your symptoms and mood against your cycle in seconds a day, so you can see which days hit hardest and prepare before they arrive.
Track how you feel and spot the pattern
PhaseBloom logs your symptoms and mood against your cycle in seconds a day, so you can see which days hit hardest and prepare before they arrive.
Frequently asked questions
Can Graves' disease stop your period?
Yes. Excess thyroid hormone can cause very light or absent periods by disrupting the hormones that drive ovulation and menstruation.
Will my period come back after Graves' treatment?
Usually, yes. Once thyroid levels normalize, most women's cycles return within a few months.