Autoimmune Abnormalities of Postpartum Thyroid Diseases.

Area of Science:

• Endocrinology
• Immunology
• Reproductive Medicine

Background:

• Postpartum period is a critical time for autoimmune diseases, including autoimmune thyroid disease.
• Postpartum thyroid disease (PTD) predominantly includes postpartum thyroiditis (PPT), Graves' disease, and non-autoimmune thyroiditis.
• PPT affects 1-22% of women globally, with an average prevalence of 5%.

Purpose of the Study:

• To review the risk factors, clinical course, and predictive markers for postpartum thyroiditis (PPT).
• To explore potential preventive strategies for PPT, including nutraceuticals and dietary modifications.
• To highlight other postpartum thyroid and non-thyroidal conditions.

Main Methods:

• Review of existing literature on postpartum thyroid disease and postpartum thyroiditis.
• Analysis of humoral markers, specifically thyroperoxidase autoantibodies (TPOAb), for PPT prediction.
• Investigation of dietary factors, such as fish consumption, and their association with thyroid antibodies.

Main Results:

• Thyroperoxidase autoantibodies (TPOAb) positivity in early pregnancy is a key predictor for PPT, though not all TPOAb-positive women develop the condition.
• Fish consumers exhibit lower rates and serum levels of TPOAb and thyroglobulin antibodies compared to meat eaters.
• Postpartum thyroiditis typically follows a three-phase course: thyrotoxic, hypothyroid, and euthyroid, with about half of affected women developing permanent hypothyroidism.

Conclusions:

• Early identification of TPOAb in pregnant women can aid in predicting PPT risk.
• Dietary interventions, such as increased fish consumption, may play a role in preventing PPT.
• Understanding PPT's course and risk factors is crucial for managing postpartum thyroid health.