Autoimmune / Thyroid

Hashimoto's Thyroiditis
Shopping & Supplement List

Root cause chain: Molecular mimicry → TPO antibodies attack thyroid → T4 falls → T3 conversion blocked → every cell under-fuelled

Every item is selected for its specific role in the biological chain driving this condition. This is not a generic health food list.

✓ Foods to prioritise
Wild salmon
Selenium and omega-3 — both essential for T4 to T3 conversion and reducing thyroid inflammation.
Brazil nuts (2 per day max)
Natural selenium source. Two nuts meet the daily requirement. More than 4 per day causes selenium toxicity.
Cooked broccoli and cauliflower
Sulforaphane supports liver detox of excess hormones. Must be cooked to deactivate goitrogens.
Egg yolks
Selenium, vitamin D, and iodine in bioavailable form. Nutrient-dense for thyroid cofactor support.
Chicken and turkey
Tyrosine-rich protein — the amino acid that forms T3 and T4 directly. Most people with Hashimoto's are protein under-eating.
Seaweed (small amounts)
Natural iodine source in moderate amounts. In Hashimoto's, iodine must be carefully balanced — not eliminated, not excessive.
Sweet potato
Beta-carotene converts to vitamin A — required for thyroid hormone receptor sensitivity.
Blueberries and cherries
Anthocyanins reduce autoimmune inflammation systemically. High in antioxidants that protect thyroid tissue.
✕ Foods to eliminate or reduce
Gluten
Triggers molecular mimicry — immune antibodies cross-react with thyroid tissue. Zero tolerance during active antibody phase.
Soy
Isoflavones block thyroid peroxidase — the enzyme that produces thyroid hormone. Impairs T4 absorption if eaten near medication.
Raw cruciferous vegetables
Goitrogens in raw form impair iodine uptake by the thyroid. Cooking deactivates them completely.
Excess iodine supplements
Accelerates thyroid cell destruction in Hashimoto's. Get iodine from food, not high-dose supplements.
Gluten-free processed foods
Most contain refined starches and seed oils that drive the inflammation underlying the autoimmune attack.
Alcohol
Directly toxic to thyroid tissue and impairs T4 to T3 conversion in the liver.
⚗ Supplement protocol
Selenium
Reduces TPO antibodies. Most studied supplement for Hashimoto's specifically.
200mcg daily with food
Vitamin D3 with K2
Regulates the autoimmune attack. Optimal range 70-80 ng/mL. K2 directs calcium to bone.
5000 IU D3 + 100mcg K2 daily
Magnesium Glycinate
Supports T4-T3 conversion, reduces cortisol, improves sleep — all critical in Hashimoto's.
300-400mg evening
Ashwagandha (KSM-66)
Reduces TPO antibodies and cortisol in clinical trials. Use KSM-66 or Sensoril form.
300-600mg with dinner
Zinc
Required for T4 production and immune regulation. Picolinate form has best absorption.
25-30mg daily with food
Myo-Inositol
Reduces TSH and TPO antibodies in published trials when combined with selenium.
600mg twice daily
L-Glutamine
Repairs gut lining — addresses the gut permeability that drives molecular mimicry.
5g morning on empty stomach

Supplements without a root cause map
are expensive guesswork.

This list addresses the known drivers of Hashimoto's Thyroiditis. A root cause conversation identifies which specific markers are active in your case — and which interventions are most relevant to your biology specifically.

Book Your Free Root Cause Call
Not a sales call. A root cause conversation. You will leave with clarity regardless.
⚕️
Medical Disclaimer: These protocols are based on patterns observed across clinical cases and are provided for general educational purposes only. They are not medical advice, not a substitute for professional diagnosis or treatment, and should not replace guidance from a qualified healthcare practitioner. Every individual is biochemically unique — what works for one person may not be appropriate for another. If you have a diagnosed condition or are on medication, consult your practitioner before making changes.