Using Real Food To Heal the Thyroid Soy-It blocks uptake of iodine which is an essential mineral for thyroid health. Goitrogens vegs-They are chemical that block iodine uptake-cabbage, broccoli, cauliflower, kale, bokchoy, watercress, brussel sprouts,peanuts. Thyroid Foods-Iodine rich:Seaweed, kelp, onions, artichokes, pineapple, Selenium rich foods:eggs, wild shellfish, garlic, sunflower seeds, Brazil nuts, Omega 3 fatty acids, Leafy greens, Chia seeds, Raw saturated fats from coconut oil