By 2. Supplements
You can find iodine in many multivitamin and mineral supplements. Many products provide about 150 micrograms per serving, which matches the daily requirement for most adults. Needs increase during pregnancy and breastfeeding, so prenatal formulas often include iodine, although not all brands do.
Some supplements contain only iodine and are available as drops, tablets, or capsules. These products may provide higher amounts than your body needs, especially if you already consume iodine-rich foods such as dairy, seafood, or iodized salt. Common forms include potassium iodide, sodium iodide, and iodine derived from seaweed sources such as kelp.
Your body absorbs iodine efficiently. Once absorbed, the thyroid uses it to produce hormones that regulate growth, metabolism, heart rate, and body temperature. Excess iodine is typically excreted in urine. Very high intake over time can disrupt normal thyroid function, potentially leading to symptoms of overactive or underactive thyroid activity.
3. Canned Tuna
Tuna absorbs iodine naturally from seawater, which gives canned tuna a small but steady iodine content. A typical 3-ounce serving of canned tuna provides about 7 micrograms of iodine. This equals roughly 5 percent of the daily value for most adults.
The iodine in canned tuna supports normal thyroid function, which helps regulate how the body uses energy. Tuna is a great source of high-quality protein and contains selenium and vitamin B12, which aid in metabolism, nerve function, and red blood cell production.
Tuna packed in water or oil does not differ significantly in iodine content. The canning process does not remove iodine because it remains stable in the fish. However, iodine levels can vary slightly depending on the species of tuna and where it was caught.
Canned tuna is shelf-stable and convenient, making it easy to use in sandwiches, salads, casseroles, and other mixed dishes. While it contributes some iodine, it is not considered a major source compared to seaweed, dairy, or iodized salt.
4. Fish Sticks
Fish sticks provide iodine because they are made from white fish such as cod or pollock, which naturally absorb iodine from ocean water. A typical three-ounce serving supplies about 50 to 60 micrograms of iodine. This makes fish sticks a practical option for supporting iodine intake, especially for people who do not eat fresh seafood often.
Freezing and breading can slightly lower iodine content, but whole fish fillets still contain significant amounts, unlike processed fish paste. The exact iodine level can vary depending on the type of fish used and how much actual fish is in the product. Fish sticks also provide protein and small amounts of nutrients such as selenium and vitamin B12.
Although they often contain added salt, it is not always iodized, so most of the iodine comes from the fish itself. Because many brands are breaded and fried, checking labels for sodium and fat content can help you choose options that fit your overall nutrition goals.
5. 5. Navy Beans
Navy beans provide a small amount of iodine, and the level can vary depending on the soil and water where they are grown. Because of this variation, they do not supply a consistent iodine amount, but they can still contribute to total daily intake. They are most useful when included as part of a varied diet rather than relied on as a primary source.
A half-cup serving of cooked navy beans offers modest iodine along with complex carbohydrates that provide steady energy. They are often paired with iodine-rich foods such as dairy or seafood to help balance overall intake. In addition to iodine, navy beans supply plant-based protein, fiber, iron, folate, and magnesium.
Their high fiber content supports digestive health and promotes fullness, which can help with appetite control. Navy beans are commonly used in soups, stews, salads, and baked dishes, making them an easy addition to balanced meals.
6. Dried Prunes
Dried prunes come from dried plums and provide small amounts of iodine. The iodine level remains low and can vary depending on the soil where the fruit is grown, so dried prunes should not be relied on as a main iodine source. Instead, dried prunes add variety to the diet and support steady eating habits.
Dried prunes also supply other nutrients that support daily needs. They contain fiber that helps support regular digestion, natural sugars that provide quick energy, and small amounts of potassium that support fluid balance. While these nutrients do not replace iodine, they add nutritional value to meals.
You can eat dried prunes on their own or mix them into foods such as oatmeal, yogurt, or trail mixes. Because dried fruit contains more concentrated sugar than fresh fruit, keeping portions moderate helps maintain balance.
7. Himalayan Salt
Himalayan salt comes from ancient salt deposits in parts of Pakistan and is commonly sold as pink crystals or fine grains. Many people use it for cooking or as a finishing salt because of its color, texture, and mild flavor. Most Himalayan salt does not have iodine added during processing, so it usually provides little to no iodine.
While it contains trace minerals such as calcium, potassium, and magnesium, these amounts are very small and do not meet daily mineral needs. In contrast, iodized table salt is fortified specifically to help prevent iodine deficiency. Without iodization, specialty salts like Himalayan salt do not reliably support iodine intake.
If Himalayan salt is your primary salt, iodine must come from other foods such as seafood, dairy products, eggs, or seaweed, or from occasional use of iodized salt. Iodine supports the production of thyroid hormones that regulate growth, metabolism, and body temperature.
8. Shrimp
Shrimp provides a solid amount of iodine in a relatively small serving. As a seafood, it naturally absorbs iodine from seawater, making it a useful food for supporting normal thyroid function. A 3-ounce serving of shrimp typically provides about 30 to 35 micrograms of iodine, contributing meaningfully to daily intake.
Shrimp is also a lean source of high-quality protein while remaining relatively low in calories and fat. In addition to iodine, it supplies selenium and vitamin B12, which support energy production, nerve function, and antioxidant activity. Shrimp also contains small amounts of zinc and phosphorus. Shrimp can be prepared in simple ways such as steaming, boiling, grilling, or adding to soups, salads, and rice dishes.
These cooking methods allow shrimp to provide iodine without relying on heavy breading or rich sauces. Because shrimp can be higher in cholesterol and sodium depending on preparation, moderation and balanced meal planning help maintain overall dietary balance.
9. Iodized Salt
Iodized salt is table salt with iodine added during processing, and because many homes use it daily, it is one of the most common sources of iodine in the diet. Only a small amount is needed. About a quarter teaspoon can provide a large share of the iodine your body needs in a day, making it an efficient source.
Iodine helps the thyroid control how your body uses energy, and low intake can cause it to work less efficiently. Over time, too little iodine may affect growth and learning, especially during pregnancy. Not all salt contains iodine, though. Sea salt, kosher salt, and many specialty salts often lack iodine unless the label clearly says “iodized.”
The iodine content in salt can decrease with heat, moisture, and long storage. While iodized salt helps meet iodine needs, using too much salt can raise blood pressure.
10. Cod
Cod stands out as one of the strongest natural food sources of iodine. A three-ounce serving can provide roughly 90 to 100 micrograms of iodine, covering a large portion of daily needs for most adults. This makes cod a dependable choice for supporting normal thyroid function.
In addition to iodine, cod provides lean, high-quality protein that supports muscle maintenance and promotes fullness. It also contains selenium, vitamin B12, and phosphorus, which contribute to energy production, nerve function, and bone health. Cod is naturally low in fat, making it suitable for balanced meal planning.
Iodine levels in cod can vary slightly depending on where it is caught, but it consistently ranks among iodine-rich fish. Baking, steaming, broiling, or pan-cooking with light seasoning helps preserve its nutrients without adding excess fat. Including cod once or twice a week can meaningfully contribute to overall iodine intake as part of a varied seafood diet.
11. Dried Seaweed
Dried seaweed is one of the richest natural food sources of iodine. It grows in ocean water that contains iodine, which the plant absorbs as it develops. Because of this, even small portions can provide a large share of daily iodine needs.
Iodine content varies widely by type. Kelp can contain very high levels, sometimes exceeding daily requirements in a single serving. Nori and wakame usually contain more moderate amounts. Growing location, harvest time, and processing methods can also influence iodine levels, so exact amounts are not always consistent.
You may already consume dried seaweed in sushi rolls, miso soup, broths, or packaged seaweed snacks. Some people sprinkle crushed seaweed over rice, salads, vegetables, or popcorn for flavor. Seaweed also provides fiber and small amounts of minerals such as iron and magnesium.
12. Baked Potatoes
Baked potatoes provide a modest amount of iodine that comes from the potato itself and the soil where it is grown. Because soil iodine levels vary by region, the amount can differ from one potato to another. Most of the iodine is concentrated near the skin, so eating the potato with the skin helps retain more of this nutrient.
Baking helps preserve minerals because the potato cooks whole and without added water, which reduces nutrient loss compared to boiling. In addition to iodine, baked potatoes supply potassium, fiber, vitamin C, and small amounts of vitamin B6. These nutrients support fluid balance, digestion, and energy use.
Iodine intake can increase if the potato is seasoned with iodized salt or paired with iodine-rich toppings such as dairy products. Baked potatoes are versatile and can serve as a side dish or a base for balanced meals when combined with protein and vegetables.
13. Turkey
Turkey provides iodine in small to moderate amounts, helping support daily intake when included in a varied diet. The iodine level can vary depending on the bird’s feed and farming practices. Farm-raised turkey may contain more iodine if iodine is included in the feed.
A three-ounce serving of turkey offers a modest iodine contribution along with high-quality protein that supports tissue repair and muscle maintenance. Turkey also provides selenium, zinc, phosphorus, and B vitamins such as niacin and vitamin B6, which support energy production and normal metabolic function.
Plain, lightly cooked turkey keeps its natural nutrients. Roasting, baking, or grilling without heavy sauces or breading helps limit added salt and fat. Since turkey provides only moderate iodine, pairing it with other iodine-rich foods helps meet daily needs.
14. Boiled Eggs
Boiled eggs provide a steady source of iodine in a simple, familiar food. Most of the iodine is found in the yolk rather than the white. One large egg supplies a modest amount of iodine that supports normal thyroid function. Boiling does not reduce iodine because the mineral remains stable during cooking. Iodine levels in eggs depend on the hens’ feed.
Hens given iodine-enriched feed lay eggs with higher iodine content, though standard eggs still contribute to daily intake. In addition to iodine, boiled eggs provide complete protein, healthy fats, choline, selenium, and vitamins such as B12 and vitamin D. These nutrients support brain function, metabolism, and overall health. Eggs are versatile and can be eaten at breakfast, added to salads or sandwiches, or used as a convenient snack. Including the yolk ensures you receive the iodine they provide.
15. Plain Yogurt
Plain yogurt provides iodine because it is made from milk. The iodine level depends on the cow’s feed, use of iodine-based sanitizers in dairy processing, and farming practices. In many cases, one cup of plain yogurt can provide a meaningful portion of daily iodine needs.
Iodine from yogurt supports the body’s production of thyroid hormones, which regulate metabolism, growth, and temperature control. Because the body stores only small amounts of iodine, regular intake from foods like yogurt helps maintain steady levels. Plain yogurt also provides protein, calcium, phosphorus, and vitamin B12. Some types contain live cultures that support gut health.
16. Bananas
Bananas contain a small amount of iodine that comes from the soil where they are grown, so levels can vary by region. One medium banana provides only a very small share of daily iodine needs and should not be relied on as a primary source.
Even so, bananas can contribute a minor amount of iodine when included in a varied diet. They also provide carbohydrates for energy, potassium for muscle and nerve function, and fiber to support regular digestion. Bananas contain vitamin B6 and small amounts of vitamin C, which support normal metabolism.
Bananas are low in sodium and fat, so they fit easily into many diets. Eating them with iodine-rich foods like yogurt, milk, or eggs can help support overall intake. While bananas do not provide enough iodine on their own, they add nutrients and variety to meals.
17. Strawberries
Strawberries contain a small amount of iodine. The exact level depends on the soil where they are grown, so the iodine content can vary by region and season. Strawberries are not a major iodine source, but they can contribute a modest amount when included in a varied diet. They work best as a supporting food rather than a primary source.
A one-cup serving provides only a small fraction of daily iodine needs. However, strawberries add variety and help round out balanced meals, especially when paired with iodine-rich foods like yogurt or milk. In addition to iodine, strawberries provide vitamin C, fiber, manganese, and natural plant compounds that support overall health. Fresh strawberries retain the most nutrients. Washing them removes dirt without affecting iodine content, and freezing preserves most nutrients for later use.
18. Canned Corn
Canned corn provides little to no iodine because corn absorbs iodine from the soil, and soil levels are low in many regions. As a result, corn remains low in iodine even after harvesting. Processing and canning do not add iodine, which is why food labels often list iodine as zero.
Unless iodized salt is specifically used, which is uncommon in canned vegetables, the iodine content stays minimal. Salt listed on ingredient labels may be non-iodized, so a salty taste does not mean the food contains iodine. Rinsing canned corn can reduce excess sodium but does not change its iodine level.
Although canned corn does not help meet iodine needs, it still provides carbohydrates for energy, small amounts of fiber, and nutrients such as vitamin C and folate. If canned corn is part of your regular meals, pairing it with iodine-rich foods like seafood, dairy, eggs, or iodized salt can help maintain balanced intake.
19. Lobster
Lobster provides a solid source of iodine, a mineral the body uses to make thyroid hormones that guide daily energy use. A three-ounce serving can provide a meaningful portion of daily iodine needs. The exact amount varies depending on where the lobster lived and what it ate, since shellfish absorb iodine from ocean water.
Steaming, boiling, or grilling helps preserve its natural iodine content. Heavy sauces or deep frying add extra calories and fat without increasing iodine. Because lobster is naturally low in fat and carbohydrates, it fits well into balanced meals when prepared simply. In addition to iodine, lobster supplies high-quality protein that supports tissue repair.
It also contains selenium, zinc, copper, and vitamin B12, which support immune function, red blood cell production, and metabolism. While lobster contributes useful nutrients, it can be higher in cholesterol and sodium depending on preparation, so portion control and balanced meal planning remain important.
20. Cheddar Cheese
Cheddar cheese provides iodine because it is made from milk, which carries iodine from the cow’s feed and water. This makes cheddar a consistent source, although the exact amount can vary by brand, farming practices, and processing methods.
Iodine content may also differ depending on whether iodized salt is used during production. A one-ounce serving, about the size of a slice, supplies a modest amount of iodine and can contribute to daily intake when included in balanced meals. Because cheddar is typically eaten in small portions, it can add iodine without requiring large servings.
Cheddar also provides protein, calcium, phosphorus, and vitamin B12, which support bone health, energy, and muscle function. Because it can be high in saturated fat and sodium, it is best eaten in moderate portions.
21. White Bread
White bread can add iodine to your diet depending on how it is made. Some bakeries use iodine-based dough conditioners, and when they do, small amounts of iodine remain in the finished bread. Not all white bread contains iodine, though. Many brands use non-iodine conditioners or none at all, which keeps iodine levels low.
Even when iodine is present, the amount per slice is usually modest. The exact content depends on the recipe and manufacturing process, and food labels rarely list iodine amounts unless the bread is specifically fortified. White bread is made from refined grains, and much of the natural fiber and nutrients are removed during processing.
Some vitamins and minerals are added back through enrichment, but iodine is not always included in this process. Despite its limited iodine content, white bread is widely eaten and fits easily into meals such as sandwiches, toast, or snacks. Pairing it with iodine-rich foods like eggs, dairy, or seafood can help improve overall intake.
