How do I know if it's menopause or my thyroid?
Reviewed by Kindr Health Clinical Team · Last reviewed July 3, 2026
Answer published
Hypothyroid and perimenopause symptoms overlap dramatically — fatigue, weight gain, brain fog, hair thinning, low mood, cold intolerance. The differentiator is a simple lab: TSH (with reflex free T4 if abnormal). If TSH is elevated, you have hypothyroidism whether or not menopause is also happening; both can coexist and each needs its own treatment. Hot flashes, night sweats, vaginal dryness, and irregular periods are more specific to perimenopause. Any midlife woman with these symptoms should have thyroid checked before starting HRT — it's a 5-minute fix to avoid chasing the wrong cause.
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