Eating more fish, nuts, fruits and vegetables and avoiding soy, cruciferous vegetables, gluten, fatty foods and sugary foods are good diet tips for patients with hypothyroidism, reports Everyday Health. Seaweed, dairy and beans are also nutrient-rich foods that improve thyroid function, while processed foods and caffeinated or alcoholic beverages hamper the treatment of hypothyroidism.
A balanced diet that supports thyroid function consists of healthy foods, especially fresh produce and high-protein foods, states Everyday Health. Fish such as tuna, trout and wild salmon contain high amounts of omega-3 fatty acids, which help reduce inflammation and the risk of heart disease that is commonly associated with untreated hypothyroidism. Nuts are rich in selenium, a nutrient that contributes to proper thyroid function.
Eating fresh fruits and vegetables helps maintain a healthy weight, but patients should avoid eating more than 5 ounces of cruciferous vegetables per day, as these vegetables prevent the thyroid from absorbing iodine properly for normal thyroid function, explains Everyday Health. Because iodine is essential in producing thyroid hormone, consuming iodine-rich seaweed may improve hypothyroidism. Patients should consult their doctors about the correct intake of these foods.
Soy is bad for hypothyroidism because it contains phytoestrogen, which may affect the body's capability to use thyroid hormone, according to Everyday Health. Gluten prevents the body from properly absorbing thyroid hormone replacement medications.