Real Pills
Example
How Potassium Iodide Works Certain forms of iodine help your thyroid gland work right. Most people get the iodine they need from foods like iodized salt or fish. The thyroid can "store" or hold only a certain amount of iodine. In a radiation emergency, radioactive iodine may be released in the air. This material may be breathed or swallowed. It may enter the thyroid gland and damage it. The damage would probably not show itself for years. Children are most likely to have thyroid damage. If you take potassium iodide, it will fill up your thyroid gland. This reduces the chance that harmful radioactive iodine will enter the thyroid gland. Who Should Not Take Potassium Iodide The only people who should not take potassium iodide are people who know they are allergic to iodide. You may take potassium iodide even if you are taking medicines for a thyroid problem (for example, a thyroid hormone or antithyroid drug). Pregnant and nursing women and babies and children may also take this drug. How And When To Take Potassium Iodide Potassium iodide should be taken as soon as possible after public health officials tell you. You should take one dose every 24 hours. More will not help you because the thyroid can "hold" only limited amounts of iodine. Larger doses will increase the risk of side effects. You will probably be told not to take the drug for more than 10 days.
Our local health food store sold out of potassium iodide within two days of the start of the Fukushima problems. There has been a run on potassium iodide tablets all over the world.
Potassium iodide, like other drugs, should only be taken when it is needed. Yet people in Vermont seem to feel they need it to protect them from radiation, when reports say that only very low levels of radiation from Fukushima will reach our coasts.
On the other hand, people may feel it is better to be safe than sorry. What is wrong with taking some pills as a prophylactic?
A lot, it turns out.
The Endocrinologist's Letter
A group of medical societies specializing in endocrinology recently issued a letter explaining why people should not take these pills unless they are actually exposed to significant quantities of radioactive iodine. On March 18, the following medical societies and association issued a statement on Radiation Risks to Health. The associations are:
the American Association of Clinical Endocrinologists
the American Thyroid Association
The Endocrine Society,
the Society of Nuclear Medicine
Here is a key quote from that letter:
However, KI should not be taken in the absence of a clear risk of exposure to a potentially dangerous level of radioactive iodine because potassium iodide can cause allergic reactions, skin rashes, salivary gland inflammation, hyperthyroidism or hypothyroidism in a small percentage of people. Since radioactive iodine decays rapidly, current estimates indicate there will not be a hazardous level of radiation reaching the United States from this accident. When an exposure does warrant KI to be taken, it should be taken as directed by physicians or public health authorities until the risk for significant exposure to radioactive iodine dissipates, but probably for no more than 1-2 weeks.
That is a pretty impressive list of side effects. Plus, you should only take the pills for a week or two at a time.
Other doctors are also concerned with prophylactic use of KI. As JoNel Aleccia, MSN health writer notes in a recent blog post, doctors are already seeing people with side effects from potassium iodide, and poison control centers are getting calls. The pills are particularly dangerous for people over forty, who run a comparatively low risk of thyroid cancer (if radionuclides were actually present) and a high risk of allergic reactions to KI.
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