Radiation and Your Thyroid: 7 Essential Tips You Should Know
The devastating earthquake and tsunami that hit Japan in March -- and damaged its Fukushima Daiichi nuclear plant -- has sparked worldwide concern about the health effects of radiation exposure.
Some in the United States have even begun hoarding potassium iodide (KI) supplements due to their ability to protect the thyroid gland from radioactive iodine.
As it stands, the U.
S.
Environmental Protection Agency (EPA) has been monitoring radiation levels across the country, noting levels that are slightly higher than normal but "still far below levels of public health concern.
" So for now it appears that radiation threats to those living in the United States are minimal.
That said, radiation is a definite threat to your thyroid health, and it's a good idea to be aware of the risks, especially if you live near a nuclear power plant.
Your thyroid is particularly vulnerable to radiation poisoning as it actively uptakes iodine from your blood to make thyroid hormones.
If you're exposed to radioactive iodine, including iodine-131, a radioactive isotope released from the Japanese nuclear plant, your thyroid will not know the difference and will take in the radioactive substance.
If your thyroid absorbs too much radioactive iodine, it can lead to thyroid cancer years later.
Nuclear accidents are, unfortunately, an inevitable reality in the 21st century, so it's important to stay informed about what to do in the event of a nuclear emergency.
Essential Radiation Info to Protect Your Thyroid Health and More 1.
Potassium Iodide Can Help Protect Your Thyroid Potassium iodide pills can help protect your thyroid from radioactive material.
By taking potassium iodide (a stable form of iodine), you can essentially flood your system with so much iodine that your body will have no need to uptake the radioactive form, thereby protecting your thyroid from the damaging effects.
The U.
S.
State Department has already given KI pills to U.
S.
personnel residing in the Japanese danger zones, but so far there appears to be no need for U.
S.
citizens in the United States to take the pills.
2.
Potassium Iodide Should NOT be Taken Unnecessarily Taking potassium iodide unnecessarily is not a good idea, as it can lead to serious side effects including even hyperthyroidism or hypothyroidism.
For now, if you live in the United States taking KI as a precautionary measure is NOT recommended, according to a joint statement released by The American Association of Clinical Endocrinologists, the American Thyroid Association, The Endocrine Society and the Society of Nuclear Medicine.
3.
Pregnant Women and Children are Most at Risk Developing fetuses, infants and children are most at risk of thyroid damage from exposure to radioactive iodine.
For this reason, public health agencies recommend KI be given to all infants (including breast-fed infants), children, young adults, pregnant women and breastfeeding women in the proper doses following exposure to radioactive iodine.
Careful attention must be given to proper dosages for newborns, as giving too much KI, or giving it for too long a period, can lead to hypothyroidism in the baby.
Generally speaking, people over 40 are at the lowest risk of thyroid damage from radioactive iodine and only need to take KI if exposure to a very high level of radiation is expected.
4.
Potassium Iodide Only Protects Your Thyroid, and is Only Useful Against One Type of Radiation There is some misconception that KI is an anti-radiation pill that can stave off all of radiation's ill effects.
In reality, KI only protects against radioactive iodine, which is just one type of radiation released during nuclear accidents.
Further, it only protects your thyroid from damage, not the rest of your body.
That said, most nuclear emergencies do involve the release of radioactive iodine, and your thyroid is most at risk from this type of radiation, so taking KI is typically a beneficial approach.
5.
You Can be Exposed to Radiation from Air, Food, Water and More Inhaling radiation from the air is only one route of exposure.
Radioactive iodine can also fall to the ground -- known as "fallout" -- contaminating water supplies and crops.
Radiation can also enter the food chain, for instance falling on grass eaten by cows, leading to contaminated milk.
The EPA has currently detected radioactive iodine-131 in milk in Spokane, Washington but reports that it is at levels 5,000 times lower than the FDA's "Derived Intervention Level" -- and is therefore not a concern at this time.
Several states have also detected iodine-131 in rain water, lakes, rivers and reservoirs, but again this was at very low levels that are unlikely to harm human health.
[1] 6.
You Can Prepare Yourself and Your Family for Nuclear Emergencies Again, it is NOT recommended that people in the United States take KI at this time due to radiation from Japan.
However, the American Thyroid Association (ATA) does recommend having potassium iodide on hand if you live near a U.
S.
nuclear facility.
Specifically, ATA advises people living within 50 mile of a nuclear plant to keep a stockpile of KI in their home.
For those living within 200 miles, ATA recommends stockpiles be kept in hospitals, schools, police stations and other public buildings.
And for those living more than 200 miles from a plant, ATA recommends KI be available from national stockpiles if necessary.
Potassium iodide is a non-prescription supplement and is therefore available over the counter, making it very easy to get.
However, it only prevents your thyroid from absorbing radioactive iodine for about 24 hours.
This means it should only be taken once a day while a radiation risk is present -- not as a preventive in the days prior to exposure.
7.
Potassium Iodide is Only One Level of Protection In the event of a nuclear emergency, local authorities will likely advise the public if supplementation with KI is recommended.
However, this is only one step toward protection.
Generally speaking, if a nuclear emergency occurs you should leave the area immediately or, if that is not possible, stay in an unventilated safe shelter with the doors and windows sealed.
You should also avoid consuming any contaminated food, milk or water.
Again, health risks to Americans from radioactive iodine from Japan appear minimal to non-existent at this time, so it is NOT necessary, nor safe, to take potassium iodide.
However, if you live near a nuclear plant in the United States, and there are many of them, you may want to keep several doses on hand -- especially if you have young children -- so you are well prepared to protect your thyroid in the event of a nuclear emergency on U.
S.
soil.
Reference 1.
Centers for Disease Control and Prevention, Frequently Asked Questions About Iodine-131 Found in Surface Water
Some in the United States have even begun hoarding potassium iodide (KI) supplements due to their ability to protect the thyroid gland from radioactive iodine.
As it stands, the U.
S.
Environmental Protection Agency (EPA) has been monitoring radiation levels across the country, noting levels that are slightly higher than normal but "still far below levels of public health concern.
" So for now it appears that radiation threats to those living in the United States are minimal.
That said, radiation is a definite threat to your thyroid health, and it's a good idea to be aware of the risks, especially if you live near a nuclear power plant.
Your thyroid is particularly vulnerable to radiation poisoning as it actively uptakes iodine from your blood to make thyroid hormones.
If you're exposed to radioactive iodine, including iodine-131, a radioactive isotope released from the Japanese nuclear plant, your thyroid will not know the difference and will take in the radioactive substance.
If your thyroid absorbs too much radioactive iodine, it can lead to thyroid cancer years later.
Nuclear accidents are, unfortunately, an inevitable reality in the 21st century, so it's important to stay informed about what to do in the event of a nuclear emergency.
Essential Radiation Info to Protect Your Thyroid Health and More 1.
Potassium Iodide Can Help Protect Your Thyroid Potassium iodide pills can help protect your thyroid from radioactive material.
By taking potassium iodide (a stable form of iodine), you can essentially flood your system with so much iodine that your body will have no need to uptake the radioactive form, thereby protecting your thyroid from the damaging effects.
The U.
S.
State Department has already given KI pills to U.
S.
personnel residing in the Japanese danger zones, but so far there appears to be no need for U.
S.
citizens in the United States to take the pills.
2.
Potassium Iodide Should NOT be Taken Unnecessarily Taking potassium iodide unnecessarily is not a good idea, as it can lead to serious side effects including even hyperthyroidism or hypothyroidism.
For now, if you live in the United States taking KI as a precautionary measure is NOT recommended, according to a joint statement released by The American Association of Clinical Endocrinologists, the American Thyroid Association, The Endocrine Society and the Society of Nuclear Medicine.
3.
Pregnant Women and Children are Most at Risk Developing fetuses, infants and children are most at risk of thyroid damage from exposure to radioactive iodine.
For this reason, public health agencies recommend KI be given to all infants (including breast-fed infants), children, young adults, pregnant women and breastfeeding women in the proper doses following exposure to radioactive iodine.
Careful attention must be given to proper dosages for newborns, as giving too much KI, or giving it for too long a period, can lead to hypothyroidism in the baby.
Generally speaking, people over 40 are at the lowest risk of thyroid damage from radioactive iodine and only need to take KI if exposure to a very high level of radiation is expected.
4.
Potassium Iodide Only Protects Your Thyroid, and is Only Useful Against One Type of Radiation There is some misconception that KI is an anti-radiation pill that can stave off all of radiation's ill effects.
In reality, KI only protects against radioactive iodine, which is just one type of radiation released during nuclear accidents.
Further, it only protects your thyroid from damage, not the rest of your body.
That said, most nuclear emergencies do involve the release of radioactive iodine, and your thyroid is most at risk from this type of radiation, so taking KI is typically a beneficial approach.
5.
You Can be Exposed to Radiation from Air, Food, Water and More Inhaling radiation from the air is only one route of exposure.
Radioactive iodine can also fall to the ground -- known as "fallout" -- contaminating water supplies and crops.
Radiation can also enter the food chain, for instance falling on grass eaten by cows, leading to contaminated milk.
The EPA has currently detected radioactive iodine-131 in milk in Spokane, Washington but reports that it is at levels 5,000 times lower than the FDA's "Derived Intervention Level" -- and is therefore not a concern at this time.
Several states have also detected iodine-131 in rain water, lakes, rivers and reservoirs, but again this was at very low levels that are unlikely to harm human health.
[1] 6.
You Can Prepare Yourself and Your Family for Nuclear Emergencies Again, it is NOT recommended that people in the United States take KI at this time due to radiation from Japan.
However, the American Thyroid Association (ATA) does recommend having potassium iodide on hand if you live near a U.
S.
nuclear facility.
Specifically, ATA advises people living within 50 mile of a nuclear plant to keep a stockpile of KI in their home.
For those living within 200 miles, ATA recommends stockpiles be kept in hospitals, schools, police stations and other public buildings.
And for those living more than 200 miles from a plant, ATA recommends KI be available from national stockpiles if necessary.
Potassium iodide is a non-prescription supplement and is therefore available over the counter, making it very easy to get.
However, it only prevents your thyroid from absorbing radioactive iodine for about 24 hours.
This means it should only be taken once a day while a radiation risk is present -- not as a preventive in the days prior to exposure.
7.
Potassium Iodide is Only One Level of Protection In the event of a nuclear emergency, local authorities will likely advise the public if supplementation with KI is recommended.
However, this is only one step toward protection.
Generally speaking, if a nuclear emergency occurs you should leave the area immediately or, if that is not possible, stay in an unventilated safe shelter with the doors and windows sealed.
You should also avoid consuming any contaminated food, milk or water.
Again, health risks to Americans from radioactive iodine from Japan appear minimal to non-existent at this time, so it is NOT necessary, nor safe, to take potassium iodide.
However, if you live near a nuclear plant in the United States, and there are many of them, you may want to keep several doses on hand -- especially if you have young children -- so you are well prepared to protect your thyroid in the event of a nuclear emergency on U.
S.
soil.
Reference 1.
Centers for Disease Control and Prevention, Frequently Asked Questions About Iodine-131 Found in Surface Water
Source...