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What Foods and Drinks Are Not Good for Hyperthyroidism?

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A person with hyperthyroidism should avoid, first and foremost, eating foods with high amount of iodine. Iodine rich foods can make hyperthyroidism worse by causing the thyroid gland to produce too much thyroid hormone.
Here’s a list of foods high in Iodine content:
• Iodized salt
• Fish and shellfish
• Dairy products
• Egg yolks
• Iodine supplements


Soy is a food that can have negative effects for someone with hyperthyroidism. Sources of soy would include soy milk, soy sauce, tofu and edamame beans. Foods that contain gluten can be bad for people with hyperthyroidism, especially for people who have a condition known as Grave’s Disease. Gluten is a protein found in wheat, barley, oats and rye. Food and drinks that contain caffeine can worsen some symptoms of hyperthyroidism, including, palpitations, tremors, anxiety and insomnia. Regular coffee, black tea, chocolates, regular soda and energy drinks all contain caffeine.