Patients with hyperthyroidism should avoid consuming refined foods such as breads and sugar, excessive red meat or processed meat, trans fatty acids, tobacco, and alcohol, according to the University of Maryland Medical Center. Patients should consult a doctor before consuming foods or drinks containing caffeine.
Hyperthyroidism patients should also eliminate suspected food allergens, recommends the University of Maryland Medical Center. These may include dairy products, corn, preservatives, soy and chemical food additives. Patients should consult a doctor before consuming foods with high levels of iron or soy products, which may interfere with thyroid medications. Reducing or eliminating consumption of trans fatty acids means avoiding many commercially baked goods such as doughnuts, crackers, cookies and cakes as well as french fries and margarine. Patients should instead cook with healthy fats such as olive oil or coconut oil.
Hyperthyroidism patients should avoid kelp, as it contains high levels of iodine that can exacerbate the condition, according to WebMD. Patients can also consume certain foods to reduce symptoms, such as foods high in B vitamins. Antioxidant foods are another important piece of the hyperthyroidism diet and include fruits and vegetables such as cherries, blueberries, squash and bell pepper. Patients should opt for lean protein such as beans and freshwater fish, and they can take a daily multivitamin to address nutritional deficiencies.