Hashimoto's Thyroiditis: The Autoimmune Thyroid Condition

Hashimoto's thyroiditis is the most common cause of hypothyroidism in the United States, yet many people with the condition don't know they have it. Understanding this autoimmune disease is the first step to managing it.

What Is Hashimoto's?

Hashimoto's is an autoimmune condition where your immune system attacks your thyroid gland. Over time, this damage reduces thyroid function, leading to hypothyroidism.

The Antibody Connection

Two antibodies are associated with Hashimoto's:

• TPO Antibodies (Anti-TPO): Present in 90% of Hashimoto's cases
• Thyroglobulin Antibodies (TgAb): Present in 50-70% of cases

You can have elevated antibodies for years before thyroid function declines.

Symptoms of Hashimoto's

Early stages may have no symptoms. As thyroid function declines:

• Fatigue
• Weight gain
• Cold intolerance
• Hair loss
• Dry skin
• Depression
• Brain fog
• Constipation
• Joint pain

Why Antibody Testing Matters

Standard thyroid screening only tests TSH. But TSH can be normal even with active autoimmune destruction. Testing antibodies:

• Identifies Hashimoto's earlier
• Explains symptoms when TSH is "normal"
• Guides lifestyle and treatment decisions

Managing Hashimoto's

Treatment often includes:

• Thyroid hormone replacement when needed
• Addressing underlying triggers
• Anti-inflammatory diet
• Stress management
• Optimizing nutrients (selenium, vitamin D, iron)

References

• Caturegli, P., et al. (2014). Hashimoto thyroiditis: clinical and diagnostic criteria. Autoimmunity Reviews, 13(4-5), 391-397.
• Garber, J. R., et al. (2012). Clinical practice guidelines for hypothyroidism in adults: cosponsored by the American Association of Clinical Endocrinologists and the American Thyroid Association. Thyroid, 22(12), 1200-1235.
• Rayman, M. P. (2012). Selenium and human health. Lancet, 379(9822), 1256-1268.