Dr. Teresa Rispoli
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Thyroid7 min read

Optimize Thyroid Health Naturally

Optimize Thyroid Health Naturally

Your thyroid controls your metabolism, energy, mood, and weight. Learn the functional medicine approach to supporting optimal thyroid function — naturally and comprehensively.

The thyroid gland produces hormones that regulate virtually every cell in the body — metabolism, heart rate, body temperature, digestion, mood, and cognitive function. When thyroid function is suboptimal, the effects are felt everywhere.

The problem with conventional thyroid testing: Most doctors only test TSH (thyroid stimulating hormone). But TSH alone misses the full picture. A comprehensive functional thyroid panel includes TSH, Free T4, Free T3, Reverse T3, TPO antibodies, and thyroglobulin antibodies.

Nutrient support is foundational. The thyroid requires iodine, selenium, zinc, iron, and tyrosine to produce and convert thyroid hormones. Selenium is particularly critical — it's required for the conversion of inactive T4 to active T3, and it protects the thyroid from oxidative damage.

Address the autoimmune component. Hashimoto's thyroiditis — an autoimmune attack on the thyroid — is the most common cause of hypothyroidism. Identifying and removing triggers (gluten, dairy, environmental toxins, infections) is essential for reducing antibody levels and protecting thyroid tissue.

Support gut health. The gut converts approximately 20% of T4 to active T3. Dysbiosis, leaky gut, and low stomach acid all impair this conversion. Healing the gut is a non-negotiable part of thyroid optimization.

Reduce toxic burden. Halogens — fluoride, chlorine, and bromine — compete with iodine for thyroid receptor sites. Filtering drinking water, choosing clean personal care products, and reducing exposure to plastics and pesticides all support thyroid health.

Manage stress. Chronic stress elevates cortisol, which suppresses TSH, inhibits T4 to T3 conversion, and increases Reverse T3 — effectively putting the brakes on thyroid function. Stress management is not optional when it comes to thyroid health.

Dr. Teresa Rispoli

Dr. Teresa Rispoli

PhD., ND, LAc. — Functional Medicine & Nutrition