Fish, nuts, whole grains, vegetables and beans can improve thyroid function for people suffering from an underactive thyroid, or hypothyroidism, according to Everyday Health. Seaweed, including wakame, dulse and nori, has a high amount of iodine, which is essential for the thyroid. Seaweed is also a source of calcium, vitamin A and fiber. Dairy products are a rich source of vitamin D, which reduces the risk of hypothyroidism.
The thyroid produces hormones that maintain energy levels, regulate mood and support metabolism, states Everyday Health. The thyroid is a gland located in the neck and is responsible for hormones that maintain heart rate, body temperature and blood pressure. Hypothyroidism can cause fatigue, depression, weight gain and constipation as well as other chronic conditions such as heart disease.
Fatty fish such as salmon, tuna and trout are an excellent source of heart health omega-3 fatty acids, explains Everyday Health. Omega-3s lower the risk of heart disease, improve cholesterol and reduce inflammation. Both fish and nuts, including macadamia, brazil and hazelnuts, are good sources of selenium, which fights inflammation and supports thyroid function.
The fiber found in whole-grain foods such as cereal, pasta, bread and rice may help reduce hypothyroidism symptoms, notes Everyday Health. The added fiber reduces constipation; however, it can interfere with thyroid medications. High-fiber foods should be consumed several hours before or after taking synthetic thyroid hormones.