The short explanation
A strong family history does raise your chance of a thyroid problem, especially autoimmune conditions such as Hashimoto's thyroiditis and Graves disease, which tend to run in families and are more common in women. Testing when you feel well is not always necessary, but many doctors are happy to check TSH, which is a simple and inexpensive blood test. Testing makes particular sense if you are planning a pregnancy, have any symptoms, or have another autoimmune condition.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Thyroid problems can come on gradually, with symptoms such as tiredness, weight change, period changes, hair changes or mood changes that are easy to put down to busy life. Knowing your family history helps you and your doctor think of the thyroid earlier.
- If your first test is normal, there is no fixed rule for how often to repeat it; your doctor may suggest testing again if symptoms appear, before pregnancy, or after delivery.
- Some doctors also check TPO antibodies if there is a strong family history and pregnancy is planned.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This answer cannot tell you whether you will develop a thyroid problem. A blood test shows your thyroid function only at the time it is done.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Should I have a TSH test now, given my family history?
- Would antibody testing be useful for me?
- Should I be tested before trying for a pregnancy?
- Which symptoms should prompt me to test again?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Book an appointment soon
- See a doctor within a few days if you notice a neck swelling, racing heart, or marked tiredness.
Raise it at a routine appointment
- Mention your family history at a routine visit and ask about a thyroid test, especially before pregnancy.
Sources
The evidence this explanation is built on.
- Thyroid diseases MedlinePlus (NIH)
- Thyroid tests MedlinePlus (NIH)
- Hypothyroidism MedlinePlus (NIH)
Who wrote and reviewed this
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- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
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No corrections have been made since this answer was first published.
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