If you have low thyroid hormone levels, you may be experiencing unpleasant side effects of fatigue, weight gain, hair loss, depression, feeling cold, headaches, menstrual irregularities, constipation, dry skin or muscle aches, according to the University of Maryland Medical Center 1. Making dietary changes may help improve your thyroid hormone levels. However, many people with hypothyroidism -- a condition that causes low thyroid hormone levels in your body -- require prescription synthetic thyroid hormone.

Causes of Hypothyroidism

Although getting too little iodine in your diet can lead to hypothyroidism, diet alone is unlikely to cause thyroid problems.

Dietary Sources of Iodine

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To reduce your chances of getting hypothyroidism from too little dietary iodine, choose plenty of iodine-rich foods on a daily basis 2. These include:

• fish
  
• seafood
  
• seaweed
  
• dairy foods
  
• eggs
  
• iodized salt
  
• as well as enriched breads
  
• cereals
  
• macaroni

Iodized salt provides almost half of the iodine-recommended percentage of the daily value for adults, according to the Office of Dietary Supplements 2. Some, but not all, multivitamins are also sources of iodine.

Treating Hypothyroidism

If you’re getting plenty of iodine in your diet but still have low levels of thyroid hormone in your body, changing your diet likely won’t treat the hypothyroidism; likely, it’s time to chat with your doctor. NEMDIS reports that hypothyroidism is often corrected by taking synthetic thyroid hormone medication every day on a regular basis, as instructed. Your doctor will recommend proper dosing of this prescription medication, based on your thyroid levels, and will monitor you closely.

Other Dietary Considerations

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A balanced diet is recommended for people with hypothyroidism, according to NEMDIS. This includes eating a good balance of fruits, vegetables, whole grains, nuts, seeds, legumes, low-fat dairy foods, plant-based oils, lean meats, seafood, poultry or soy products, eggs and legumes.include:

• This includes eating a good balance of fruits
  
• vegetables
  
• whole grains
  
• nuts
  
• seeds
  
• legumes
  
• low-fat dairy foods
  
• plant-based oils
  
• lean meats
  
• seafood
  
• poultry or soy products
  
• eggs
  
• legumes

You will likely obtain the recommend dietary allowance, or RDA, for iodine -- which is 150 micrograms daily for adult men and women, 220 micrograms during pregnancy and 290 micrograms per day while breastfeeding -- by eating a variety of iodine-rich foods 2. However, since iodine requirements are higher for pregnant and breastfeeding women, doctors may recommend a prenatal multivitamin that contains iodine.