Iodine is a small, but highly essential mineral for your thyroid gland to function properly. If you have tried to find iodine-rich foods for your thyroid and are aware of the conflicting information, then you know it can be very confusing. This guide details where to find the best iodine food sources, why iodine rich foods for thyroid health is so important, and a complete list of top 10 natural food sources of iodine. For those who are vegetarian, we will discuss iodine rich fruits and vegetables.
Why Iodine Matters for Your Thyroid
Iodine gets combined with the thyroid gland to produce two important hormones, T3 (triiodothyronine) and T4 (thyroxine), that control the function of the body's metabolism, heart rate, temperature and even brain development in children. The thyroid gland requires sufficient amounts of iodine to produce these hormones effectively, or the thyroid gland may become enlarged (goiterous), your body may become fatigued and gain weight, and your metabolism may decrease.
Hence, nutritionists always recommend using a source of good source of iodine in your diet, and not just in supplements. Whole foods will also contain additional nutrients such as selenium and zinc, which also support thyroid function.
How Much Iodine Do You Actually Need?
Iodine has been recommended for an intake between 150 micrograms (mcg) per day for most adults, and 220-290 mcg per day for pregnant and breastfeeding women. It's generally safer and more sustainable to obtain iodine from natural foods rather than supplements containing high doses of iodine; too much iodine can also affect thyroid function.
With that in mind, let's dive into the top 10 foods highest in iodine that you should have on a regular basis.
Top 10 Iodine Rich Foods: -
- Iodized Salt
Iodized salt is the most common and easiest of the iodine rich foods to use, and is iodine fortified for the purpose of preventing iodine deficiency in a population. The dose of about 200 mcg of iodine in a single, small dose comes from just half a teaspoon.
- Seaweed and Kelp
Some of the richest natural sources of iodine on the planet include seaweed varieties such as kelp, nori, kombu and wakame. A single serving of dried seaweed can have anywhere between a hundred or more to several thousand micrograms of iodine, so this is where it's important to practice portion control.
- Fish (Cod, Tuna, and Other White Fish)
Non-vegetarians rely on ocean fish as a source of iodine in their food; they take up iodine in seawater. For example, 100g of cod offers a substantial amount of iodine, as well as lean protein and omega-3 fats, for a single serving.
- Dairy Products (Milk, Yogurt, and Cheese)
Surprisingly all types of cow's milk and dairy products contain iodine, in large part due to the use of iodine-based sanitizers in the dairy business and the iodine found in the feed for the cows. For individuals who enjoy dairy products, a single glass of milk may be one of the best iodine rich food for thyroid choices.
- Eggs
Eggs, especially the yolk, are an everyday source of iodine that is convenient. Eggs complete the list of simple, trouble-free foods to add to your breakfast—along with choline and vitamin D.
- Shrimp and Other Shellfish
Shrimp contains a moderate amount of iodine, and is low-calorie, making it one of the best food sources for iodine intake for those trying to eat well on a low-calorie diet.
- Prunes (Dried Plums)
Prunes are an exceptionally good source of iodine among the fruits and vegetables that are high in iodine. But a few dried prunes offer some significant iodine content as well as fiber, which helps digestion, a welcome side to the health of a thyroid-friendly diet.
- Potatoes (with Skin)
Potatoes take up iodine in the soil in which they are planted and the skin contains a significant amount of iodine. Therefore, potatoes are one of the less known fruits and vegetables that are also a great source of iodine, particularly for vegetarians who are searching for plant-based sources of iodine in their natural diet.
- Bananas
Bananas are also a banana on the list of iodine rich fruits and vegetables, providing a moderate, but consistent amount of iodine, along with potassium for healthy blood pressure; good for overall heart health in addition to thyroid health.
- Cranberries
Cranberries (fresh, dried or as juice) are said to be one of the most iodine-rich fruits. Here on our top 10 iodine rich foods list cranberries are another food that has antioxidants and a substantial amount of iodine.
Iodine Rich Fruits and Vegetables: -
Having an easy-to-find list of iodine rich fruits and vegetables is handy for those who keep a plant-based diet: Potatoes (with the skin), bananas, prunes, cranberries, and leafy greens that are grown in iodine-rich soil. Typically, foods of plant origin have less iodine than seafood or dairy products, but by increasing the amount of these natural foods in the diet during a single week, it is possible to contribute substantially to iodine intake, especially for vegetarian and vegan diets where planning is required.
Signs You May Need More Iodine Rich Foods in Your Diet
Some of the most common symptoms of iodine deficiency are unexplained fatigue, unexpected weight gain, hair loss, cold intolerance and a visibly enlarged neck (goiter). When you see multiple of these symptoms at once, it's possible to consult a physician regarding your thyroid levels and think about eating more iodine-rich food to support your thyroid in your day-to-day eating regimen. An easy blood test (TSH, T3, T4) will determine if your thyroid hormone levels are in a healthy range.
Tips to Get the Most Out of Iodine Rich Foods
Rotate your sources:
Don't just use one food from the top 10 iodine rich foods, as doing so would not be enough to provide complementary nutrients such as selenium and zinc.
Don't over-boil vegetables:
Steaming or roasting iodine rich fruits and vegetables will help to retain more of the mineral as it can leach out into water when cooking.
Check your salt:
Make sure that the salt that you use in your home is iodized, as most people consume the majority of their dietary iodine from salt.
Balance, don't overdo it:
Too much can be as harmful as too little, particularly from seaweed, so limit portions.
Consult a professional if pregnant:
For pregnant women, iodine requirements are higher, and must be addressed with a doctor, so they can plan to get sufficient iodine from natural foods.
Also Read - The Complete Guide to Brown Rice for Weight Loss
Conclusion
The key to a healthy thyroid is regular, moderate iodine, and the great news is that this doesn't require anything out there. There are a variety of easy-to-find foods rich in iodine available in nearly every kitchen, from iodized salt and milk products to fish, eggs and some fruits and vegetables. Simply rotate through this list of top 10 iodine rich foods and focus on how you prepare them to support your thyroid naturally and enjoy a diverse, balanced diet that includes natural sources of iodine in your food and not just supplements.
FAQs
What are the best iodine rich foods for vegetarians?
Vegetarians can get iodine from dairy products, eggs, iodized salt, and some iodine rich fruits and vegetables such as potatoes, bananas, prunes and cranberries.
Can I get enough iodine from fruits and vegetables alone?
It's possible but requires planning. Vegetarians and vegans have to ensure they have multiple sources of iodine in their diet during the week as most iodine rich fruits and vegetables are lower in iodine than seafood or dairy.
What happens if I don't eat enough iodine rich food for thyroid health?
If you're not getting enough iodine in your diet for the thyroid, you could experience fatigue, weight gain, enlarged thyroid gland, and a slower metabolism because your thyroid isn't making as much thyroid hormone.
Is iodized salt enough to meet my daily iodine needs?
Iodized salt is an excellent way to get a significant amount of the iodine you need in your diet, but it can be complemented with other top 10 foods that are high in iodine, such as dairy products, eggs, and fish.
Are there natural food sources of iodine besides seafood?
Yes. For those who don't eat seafood, excellent sources of iodine in nature are dairy products, eggs, iodized salt and some iodine rich fruits and vegetables like potatoes and prunes.
