Patient Education · Balaji Horizon

Thyroid, PCOS and Miscarriage Risk: The Modifiable Factors

Dr. Priyadatt Patel
Reviewed by Dr. Priyadatt PatelSenior Gynecologist · Advanced Laparoscopic Surgeon · IVF & Endometriosis Programme Lead
DPP
Reviewed by Dr. Priyadatt PatelSenior Gynecologist · Advanced Laparoscopic Surgeon · Last reviewed 1 Jun 2026

Reading time: about 6 minutes. This article is educational and does not replace an individual consultation.

After a miscarriage, it is natural to ask whether anything could be done differently next time. While many miscarriages are due to chance chromosomal events that cannot be prevented, there are some modifiable factors — including thyroid function and aspects of PCOS — that are worth optimising. This article explains them, with care and honesty.

Who this article is for

This is for women in Ahmedabad and Gujarat who have experienced miscarriage and want to understand which contributing factors can be addressed.

An honest starting point

Most single early miscarriages happen because of random chromosomal problems in the pregnancy and are not caused by anything the mother did or could have prevented. This is important to say clearly, because guilt is common and usually misplaced [Source: ESHRE Guideline on Recurrent Pregnancy Loss, 2023]. That said, optimising certain health factors is sensible, especially when planning another pregnancy.

Thyroid function

Thyroid disorders — particularly an underactive thyroid — are associated with increased miscarriage risk, and thyroid function is checkable and treatable. Ensuring thyroid levels are optimised before and during pregnancy is a reasonable, evidence-based step [Source: ESHRE Guideline on RPL, 2023].

PCOS and related metabolic factors

PCOS is associated with a higher miscarriage risk in some studies, and related factors such as insulin resistance and blood sugar control may play a role. Optimising metabolic health through sustainable lifestyle measures, and managing blood sugar where relevant, is a constructive part of preparing for pregnancy [Source: International PCOS Guideline, 2023].

Other modifiable factors

  • Smoking, alcohol, and excessive caffeine are worth reducing, as they are associated with pregnancy risks.
  • Folic acid before and in early pregnancy supports healthy development.
  • Well-controlled chronic conditions such as diabetes and thyroid disease improve outcomes.
  • A treatable blood-clotting or immune condition (such as antiphospholipid syndrome) should be identified, as it is specifically treatable [Source: ESHRE Guideline on RPL, 2023].

What is not helpful

Beware of unproven “immune” treatments or expensive interventions offered without good evidence. Optimising genuine, identified factors is valuable; chasing unsupported treatments is not [Source: ESHRE Guideline on RPL, 2023].

What to ask

  • Should my thyroid function be checked and optimised?
  • Do I have metabolic factors worth addressing before trying again?
  • Are there any treatable causes specific to me?
  • What preparation do you recommend before the next pregnancy?

Preconception care in Ahmedabad

Optimising treatable factors before pregnancy is a constructive, evidence-based step after miscarriage. Balaji Horizon Women’s Hospital, on Science City Road in Ahmedabad, offers preconception assessment that addresses thyroid, metabolic, and other modifiable factors — while being honest about what can and cannot be changed.

When to seek advice

Consider a preconception review after a miscarriage, particularly if you have a thyroid condition, PCOS, diabetes, or have had more than one loss. Optimising health before trying again is worthwhile [Source: ESHRE Guideline on RPL, 2023].

A note on next steps

For preconception optimisation, our team can help. Read more on our recurrent pregnancy loss and PCOS pages.

Frequently asked questions

Could my miscarriage have been prevented?

Most single early miscarriages result from random chromosomal events and could not have been prevented. This is not your fault. Optimising treatable factors is still sensible when planning another pregnancy [Source: ESHRE Guideline on RPL, 2023].

Can a thyroid problem cause miscarriage?

Thyroid disorders, particularly an underactive thyroid, are associated with increased miscarriage risk, and thyroid function is checkable and treatable. Optimising it before and during pregnancy is a reasonable step [Source: ESHRE Guideline on RPL, 2023].

Does PCOS increase miscarriage risk?

Some studies associate PCOS with a higher miscarriage risk, possibly linked to metabolic factors. Optimising metabolic health through sustainable measures is a constructive part of preparing for pregnancy [Source: International PCOS Guideline, 2023].

What should I do before trying again?

Sensible steps include checking thyroid function, optimising any chronic conditions, taking folic acid, and reducing smoking, alcohol, and excess caffeine. A preconception review can personalise this.

Are immune treatments for miscarriage worthwhile?

Be cautious. Many “immune” treatments lack good evidence and are best avoided unless a specific, treatable condition such as antiphospholipid syndrome is identified [Source: ESHRE Guideline on RPL, 2023].


Disclaimer: This article is for educational purposes only and does not replace a consultation with a qualified specialist.

Dr. Priyadatt Patel
About the Author
Dr. Priyadatt Patel
Senior Gynecologist · Advanced Laparoscopic Surgeon · IVF & Endometriosis Programme Lead
Founder of Balaji Horizon Women’s Hospital. ESHRE / ASRM / FIGO-aligned practice. ★ 5.0 on Google · 287 reviews.
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