Author Topic: Potassium iodide - Thyroid protection due to nuclear accidents and emergencies  (Read 1849 times)

loco

  • Getbig V
  • *****
  • Posts: 20521
  • loco like a fox
SSKI may be used in radioiodine-contamination emergencies (i.e., nuclear accidents) to "block" the thyroid's uptake of radioiodine (this is not the same as blocking the thyroid's release of thyroid hormone).

Potassium iodide was approved in 1982 by the US FDA to protect the thyroid glands from radioactive iodine from accidents or fission emergencies. In the event of an accident or attack at a nuclear power plant, or fallout from a nuclear bomb, volatile fission product radionuclides may be released, of which 131I is one of the most common by-products and a particularly dangerous one due to thyroid gland concentration of it, which may lead to thyroid cancer. By saturating the body with a source of stable iodide prior to exposure, inhaled or ingested 131I tends to be excreted.

Potassium iodide cannot protect against any other causes of radiation poisoning, nor can it provide any degree of protection against dirty bombs that produce radionuclides other than isotopes of iodine. See fission products and the external links for more details concerning radionuclides.

WHO Recommended Dosage for Radiological Emergencies involving radioactive iodine[25] Age    KI in mg per day
Over 12 years old    130
3 – 12 years old    65*
1 – 36 months old    32
< 1 month old    16

(*...contained in one scored tablet specific for this use. The potassium iodide in iodized salt is insufficient for this use as 80 tablespoons would be needed to equal one tablet.)

The World Health Organization recommends that nuclear fallout KI prophylaxis is not recommended for adults over 40 years, unless inhaled radiation dose levels are expected to threaten thyroid function; because, the KI side effects increases with age and may exceed the KI protective effects "...unless doses to the thyroid from inhalation rise to levels threatening thyroid function, that is of the order of about 5 Gy. Such radiation doses will not occur far away from an accident site."[25]

The protective effect of KI lasts approximately 24 hours. For optimal prophylaxis, KI should therefore be dosed daily, until a risk of significant exposure to radioiodines by either inhalation or ingestion no longer exists. Protective KI loads the thyroid with non-ionizing iodine, which prevents radioiodines uptake.

The U.S. Department of Health and Human Services restated these two years later as "The downward KI (potassium iodide) dose adjustment by age group, based on body size considerations, adheres to the principle of minimum effective dose. The recommended standard (daily) dose of KI for all school-age children is the same (65 mg). However, adolescents approaching adult size (i.e., >70 kg [154 lbs]) should receive the full adult dose (130 mg) for maximal block of thyroid radioiodine uptake. Neonates ideally should receive the lowest dose (16 mg) of KI."[26]

http://en.wikipedia.org/wiki/Potassium_iodide#Thyroid_protection_due_to_nuclear_accidents_and_emergencies

loco

  • Getbig V
  • *****
  • Posts: 20521
  • loco like a fox
Radiation fears spark run on West Coast pharmacies, health food stores

(CNN) -- Many West Coast residents came up empty handed in their search of potassium iodide this week as fears over radiation spreading from Japan took hold.

The rush on the supplement came even as emergency management officials said there is no need to take the pills believed to prevent the thyroid from absorbing radiation.

"I didn't see too many people concerned about it. But when it was sold out, it made me think that I should be concerned," said Hameed Hemmat, who lives in the San Francisco Bay area.

Hemmat, who struggled to find potassium iodide online when he couldn't find it in his area, said he ended up placing an order with a New Jersey company. He also has friends in New York looking for it.

Last week's 9.0-magnitude earthquake unleashed a deadly tsunami that wiped out large sections of northeastern Japan. The waves damaged a nuclear power plant that has released radiation into the air and could release more if workers can't control runaway temperatures.

The U.S. Nuclear Regulatory Commission has said it does not expect to see harmful levels of radiation reaching the United States from Japan, but is working to deploy additional monitoring capabilities to parts of the western United States and U.S. territories.

Some, like Angie Girgis in Dublin, California, said the crisis in Japan is not a cause for alarm stateside.

"It's pretty far away," Girgis said. "There's a whole ocean between us."

Others, like Matt Donnellan in San Diego, said it was a case of being prepared.

"I sent some to my family in New York and kept some just in case," he said.

Internet retailers attempted to capitalize on the fear. A Twitter search revealed dozens of of ads hawking the product.

The supplement disappeared from some store shelves even as California's emergency management agency warned residents against taking it.

"It is not necessary given the current circumstances in Japan," the agency said. "It can present a danger to people with allergies to iodine, shellfish or who have thyroid problems, and taken inappropriately it can have serious side effects."

Diane D'Arrigo with the Nuclear Information and Resource Service in Washington, D.C. said she's ordered potassium iodide, but acknowledges it has limited effectiveness.

"It is important for blocking uptake of (radioactive) iodine to the thyroid, but there are other radionuclides that go to other organs that it won't help with," she said of the radioactive elements.

The Nuclear Information and Resource Service bills itself as a center for "citizens and environmental activists concerned about nuclear power, radioactive waste, radiation and sustainable energy issues."

Some who came away unsuccessful in their search for potassium iodide took other steps.

Jamie Everhart of Hungtington Beach, California, opted for sea kelp instead.

"Sea Kelp is a natural source of iodine which blocks the radiation from processing in your thyroid," she said. "I figure it's better to be safe than sorry."

http://www.cnn.com/2011/US/03/16/japan.west.coast.fears/index.html?hpt=C2

225for70

  • Getbig IV
  • ****
  • Posts: 3127
  • Suckmymuscle is OneMoreRep's little bitch
I wish i would have bought cases worth of the supplement, then sold them at a nice profit i'd imagine.

loco

  • Getbig V
  • *****
  • Posts: 20521
  • loco like a fox
[11:45 a.m. ET Wednesday, 12:45 a.m. Thursday in Tokyo] The U.S. military is now giving potassium iodide pills to some helicopter pilots and crew members as a precautionary measure before missions flying into Japan, Pentagon spokesman Dave Lapan said Wednesday. Previously air crews had only received the pills after some missions.

http://news.blogs.cnn.com/2011/03/16/japan-quake-live-blog-death-toll-expected-to-rise-as-crews-reach-more-areas/?hpt=T1

loco

  • Getbig V
  • *****
  • Posts: 20521
  • loco like a fox
I wish i would have bought cases worth of the supplement, then sold them at a nice profit i'd imagine.

I wonder if 24KT/JaguarScams will now change her name to KI and start selling fake pills to gullible people.

Hugo Chavez

  • Getbig V
  • *****
  • Posts: 31865
I got some of them and don't think it was stupid to get them.  I don't plan on us taking them unless we start getting dangerous levels over here.  Come on, all these articles are going on the assumption that everyone is buying AND taking these things right now. ::)  I don't think anybody is doing that.  I think we're getting them because we know all to well that there is a justified ZERO faith in our government when or if the shit hits the fan.  So we've been watching shit spiral out of control at multiple reactors in what could end up being a steady stream of fallout for months and easily has the potential to release much greater amounts of radioactive material than came from Russia.  If people want to have these on hand for their family just in case.  At this point, I don't see how that's a bad idea.  On the other hand, if you want to count on the government hooking you up if the shit hits the fan, lol... go for it, not me...

225for70

  • Getbig IV
  • ****
  • Posts: 3127
  • Suckmymuscle is OneMoreRep's little bitch
I got some of them and don't think it was stupid to get them.  I don't plan on us taking them unless we start getting dangerous levels over here.  Come on, all these articles are going on the assumption that everyone is buying AND taking these things right now. ::)  I don't think anybody is doing that.  I think we're getting them because we know all to well that there is a justified ZERO faith in our government when or if the shit hits the fan.  So we've been watching shit spiral out of control at multiple reactors in what could end up being a steady stream of fallout for months and easily has the potential to release much greater amounts of radioactive material than came from Russia.  If people want to have these on hand for their family just in case.  At this point, I don't see how that's a bad idea.  On the other hand, if you want to count on the government hooking you up if the shit hits the fan, lol... go for it, not me...

You have nothing to lose by purchasing iodine supps...

I wonder if 24KT/JaguarScams will now change her name to KI and start selling fake pills to gullible people.

Haha i wouldn't be surprised one bit.

loco

  • Getbig V
  • *****
  • Posts: 20521
  • loco like a fox
I got some of them and don't think it was stupid to get them.  I don't plan on us taking them unless we start getting dangerous levels over here.  Come on, all these articles are going on the assumption that everyone is buying AND taking these things right now. ::)  I don't think anybody is doing that.  I think we're getting them because we know all to well that there is a justified ZERO faith in our government when or if the shit hits the fan.  So we've been watching shit spiral out of control at multiple reactors in what could end up being a steady stream of fallout for months and easily has the potential to release much greater amounts of radioactive material than came from Russia.  If people want to have these on hand for their family just in case.  At this point, I don't see how that's a bad idea.  On the other hand, if you want to count on the government hooking you up if the shit hits the fan, lol... go for it, not me...

Better to have them and not need them than to need them and not have them!

Hugo Chavez

  • Getbig V
  • *****
  • Posts: 31865
I don't know why lol but the way everyone is addressing this whole meltdown issue, the scientists, nuclear advocates, tokyo power company and even the way people are ignoring this all so much reminds me of this clip ;D


225for70

  • Getbig IV
  • ****
  • Posts: 3127
  • Suckmymuscle is OneMoreRep's little bitch
http://www.latimes.com/news/la-fg-china-iodine-salt-20110318,0,4281601.story?track=rss



Reporting from Beijing— China tried to quell panic buying of iodized salt Thursday after grocery stores across the country were emptied of the seasoning by hordes of people hoping to ward off radiation poisoning after the nuclear accidents in Japan.

The clamor for salt reportedly started after rumors spread, possibly by cellphone text messaging, that China would be hit by a radioactive cloud from Japan's Fukushima No. 1 (Daiichi) nuclear plant, which had been badly damaged during last week's earthquake and tsunami.

People were under the false impression that consuming enough iodized salt would protect against radiation and that China's sea salt supplies would be contaminated as a result of the unfolding Japanese crisis.

That sparked long lines and mob scenes in major cities such as Shanghai, Beijing and Hangzhou.

In a scene repeated across the country, online video from the eastern city of Wenzhou showed panicked shoppers filling their baskets with tubs of salt and street vendors complaining about being cleaned out.

"I hear there was also a huge earthquake in Taiwan and it will hurt salt supply," a woman was heard saying. There was no earthquake in Taiwan.

Chinese authorities have tried to quash the rumors, explaining that the country has massive reserves and that 80% of its salt sources were on land.

Thousands of television screens on Beijing's subway cars displayed a public service announcement Thursday that said: "The local salt bureau has stated that there's an adequate supply of salt. Salt is a special product that is controlled by the government. Supply is greater than demand."

Meanwhile, China's National Development and Reform Commission told price-control authorities to crack down on hoarding.

The Chinese National Marine Environmental Forecasting Center also tried to allay fears that radioactive particles were headed toward China, explaining that currents in the Pacific Ocean next to Fukushima were flowing east.

"It is impossible for radioactive substances to reach China's sea areas via the ocean current," the forecasting center said, according to the official New China News Agency.

Salt producers benefited from the pandemonium. Shares of Yunnan Salt & Chemical Industry Co. rose by the daily limit of 10%.

In another sign that panic over Japan's nuclear crisis is spreading across borders, authorities in the Philippines held a news conference Thursday to silence rumors that the country would be hit by radioactive fallout.

More: Articles, videos and graphics on radiation exposure, nuclear crisis

Hugo Chavez

  • Getbig V
  • *****
  • Posts: 31865
http://www.latimes.com/news/la-fg-china-iodine-salt-20110318,0,4281601.story?track=rss



Reporting from Beijing— China tried to quell panic buying of iodized salt Thursday after grocery stores across the country were emptied of the seasoning by hordes of people hoping to ward off radiation poisoning after the nuclear accidents in Japan.

The clamor for salt reportedly started after rumors spread, possibly by cellphone text messaging, that China would be hit by a radioactive cloud from Japan's Fukushima No. 1 (Daiichi) nuclear plant, which had been badly damaged during last week's earthquake and tsunami.

People were under the false impression that consuming enough iodized salt would protect against radiation and that China's sea salt supplies would be contaminated as a result of the unfolding Japanese crisis.

That sparked long lines and mob scenes in major cities such as Shanghai, Beijing and Hangzhou.

In a scene repeated across the country, online video from the eastern city of Wenzhou showed panicked shoppers filling their baskets with tubs of salt and street vendors complaining about being cleaned out.

"I hear there was also a huge earthquake in Taiwan and it will hurt salt supply," a woman was heard saying. There was no earthquake in Taiwan.

Chinese authorities have tried to quash the rumors, explaining that the country has massive reserves and that 80% of its salt sources were on land.

Thousands of television screens on Beijing's subway cars displayed a public service announcement Thursday that said: "The local salt bureau has stated that there's an adequate supply of salt. Salt is a special product that is controlled by the government. Supply is greater than demand."

Meanwhile, China's National Development and Reform Commission told price-control authorities to crack down on hoarding.

The Chinese National Marine Environmental Forecasting Center also tried to allay fears that radioactive particles were headed toward China, explaining that currents in the Pacific Ocean next to Fukushima were flowing east.

"It is impossible for radioactive substances to reach China's sea areas via the ocean current," the forecasting center said, according to the official New China News Agency.

Salt producers benefited from the pandemonium. Shares of Yunnan Salt & Chemical Industry Co. rose by the daily limit of 10%.

In another sign that panic over Japan's nuclear crisis is spreading across borders, authorities in the Philippines held a news conference Thursday to silence rumors that the country would be hit by radioactive fallout.

More: Articles, videos and graphics on radiation exposure, nuclear crisis

great way to reduce the population in China lol...  The amount of salt they would have to take would kill the fuck out of them.

Skip8282

  • Getbig V
  • *****
  • Posts: 7004
Not looking good...


Japan hikes legal radiation dose for nuke workers

The Associated Press

Japan has raised the maximum radiation dose allowed for nuclear workers, citing the urgent need to prevent a crisis at a tsunami-stricken power plant from worsening.

Despite the increase, surging radiation levels forced emergency workers to temporarily withdraw from the crippled Fukushima Dai-ichi nuclear plant on Wednesday, losing time in their struggle to cool overheating fuel in reactors crippled by last week's devastating earthquake and tsunami.

The Ministry of Health Labor and Welfare raised the maximum allowable exposure for nuclear workers to 250 millisieverts from 100 millisieverts. It described the move as "unavoidable due to the circumstances."



Read more: http://www.kansascity.com/2011/03/16/2729341/japan-hikes-legal-radiation-dose.html#ixzz1Gu1KZ2zp