Iodine

Iodine is a trace element found in seawater, rocks and in some types of soil. Good food sources include sea fish and shellfish.

Iodine can also be found in plant foods such as cereals and grains but the levels vary depending on the amount of iodine in the soil where the plants are grown.

In the UK, iodine can also be found in cows' milk.

How much do I need?

You should be able to get all the iodine you need by eating a varied and balanced diet. Adults need 0.14 mg a day.

What does it do?

It helps make the thyroid hormones. These hormones help keep cells and the metabolic rate healthy.

What happens if I take too much?

Taking high doses of iodine for long periods of time could change the way your thyroid gland works. This can lead to a wide range of different symptoms, for example weight gain.

What is our advice?

You should be able to get all the iodine you need by eating a varied and balanced diet. But if you decide to take iodine supplements it's a good idea not to take too much because this could be harmful.

Having 0.5 mg or less a day of iodine supplements is unlikely to cause any harm.

Arrow_Dropdown Created with Sketch. Arrow_leftArrow_Right Icon_AlchoholIcon_Alchohol_RoundalIcon_AppleIcon_Apple_RoundalIcon_BacteriaIcon_Bacteria_Roundal calorie-outlined Created with Sketch. Icon_CardActivityIcon_CardActivity_RoundalIcon_CarrotIcon_Carrot_RoundalIcon_CertificateIcon_Certificate_RoundalIcon_CheeseIcon_Cheese_RoundalIcon_ChocolateIcon_Chocolate_RoundalIcon_ClipboardIcon_Clipboard_RoundalIcon_CloseIcon_CowIcon_Cow_Roundal Shape Created with Sketch. Icon_CursorIcon_Cursor_RoundalIcon_DeerIcon_Deer_RoundalIcon_download Icon_Facebook_RoundalIcon-FeaturedIcon_FishIcon_Fish_RoundalIcon_FizzyJuiceIcon_FizzyJuice_RoundalIcon_ForkIcon_Fork_RoundalIcon_FridgeIcon_Fridge_RoundalIcon_GrainIcon_GrainNoIcon_GrainNo_RoundalIcon_Grain_RoundalIcon_GraphIcon_GraphResourceIcon_Graph_RoundalIcon_HandIcon_Hand_RoundalIcon_HeartIcon_Heart_RoundalIcon_InfoIcon_Info_Roundal instagram Icon_LambIcon_Lamb_RoundalIcon_LetterIcon_Letter_RoundalIcon_LinkExternalIcon_LinkInternal Icon_MagnifyingGlassIcon_MagnifyingGlass_RoundalIcon_NewIcon_NewsIcon_News_RoundalIcon_OilIcon_Oil_RoundalIcon_PeopleIcon_People_RoundalIcon_PersonIcon_Person_RoundalIcon_PhoneIcon_Phone_RoundalIcon_PigIcon_Pig_RoundalIcon_PlayIcon_PotatoesIcon_Potatoes_RoundalIcon_PrintIcon_Print_RoundalIcon_ResourceIcon_Resource_Roundal Group Created with Sketch. Icon_SaltIcon_Salt_RoundalIcon_SaveIcon_Save_RoundalIcon_ScotlandIcon_Scotland_RoundalIcon_SearchIcon_ShellfishIcon_Shellfish_RoundalIcon-SpiralIcon_SteakIcon_Steak_RoundalIcon_StopwatchIcon_Stopwatch_RoundalIcon_TapWaterIcon_TapWater_RoundalIcon_TestTubeIcon_TestTube_RoundalIcon_ThumbsUpIcon_ThumbsUp_RoundalIcon_Tick Shape Created with Sketch. Icon_Tick_1Icon_Tick_RoundalIcon_TomatoIcon_Tomato_RoundalIcon_TractorIcon_Tractor_RoundalIcon_TrollyIcon_Trolly_RoundalIcon_TurkeyIcon_TurkeyCookedIcon_TurkeyCooked_RoundalIcon_Turkey_Roundal Icon_Twitter_RoundalIcon_WarningIcon_Warning_RoundalIcon_WaterDropIcon_WaterDrop_RoundalIcon_WineBottleIcon_WineBottle_RoundalIcon_WineGlassIcon_WineGlass_Roundal youtube Icon_snowflakeIcon_snowflake_RoundalLogo_FSS_Gaelic_WhiteLogo_FSS_WhitePagination_LeftArtboard 69