Thursday, March 17, 2011

Avoid Potassium iodide can be dangerous




Advise
Potassium iodid should be follow the advice of a physician.
Potassium iodide supplements are flying off drug-store shelves in the United States, according to a number of reports. There are two reasons why this is not a good thing. One, experts have repeatedly reassured Americans that any radiation from the leaking nuclear reactors in Japan will not be a threat in this country. The radiation will dissipate as it traverses the Pacific Ocean. Buying it is a waste of money.

Two, taking potassium iodide tablets without just cause can be risky for some people, health experts warned Wednesday.

"All of the predictions are that there will not be enough radiation reaching Hawaii or the West Coast to be of any concern, said Dr. Leonard Wartofsky, an endocrinologist at the Uniformed Services University of Health Sciences in Bethesda, Md., and a past president of the Endocrine Society. "Although in Japan, especially among those living very close to the reactor, there is major exposure and there is reason to take iodide tablets or solution."

Potassium iodide is not recommended until radiation levels are in the 50-rad region, he said. "It's not going to be anywhere near that in the United States. It's hitting the panic button unnecessarily."

In cases of true radiation exposure, the benefits of potassium iodide outweigh the risks.

Taking stable iodide tablets can protect the thyroid from exposure to radioactive iodine-131 by "filling up" the gland and preventing it from taking up the radioactive iodine. But potassium iodide can be harmful to people who are allergic to the substance or who have the skin disorders dermatitis herpetiformis or urticaria vasculitis, according to the Centers for Disease Control and Prevention.

People with thyroid disorders whot take the substance can experience a worsening of their thyroid illnesses, Wartofsky said. If potassium iodide is truly necessary for these people, they should take it under a doctor's supervision. Pregnant women and infants should not be given potassium iodide because it could cause a serious thyroid disorder in infants.

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Originally published by http://www.latimes.com

Japan nuclear crisis:U.S. shows growing alarm over




WASHINGTON (Reuters) – The United States showed increasing alarm about Japan's nuclear crisis on Wednesday and urged its citizens to stay clear of an earthquake-crippled power plant, going further in its warnings than Japan itself.

The State Department said the United States has chartered aircraft to help Americans leave Japan and had authorized the voluntary departure of family members of diplomatic staff in Tokyo, Nagoya and Yokohama -- about 600 people.

"The State Department strongly urges U.S. citizens to defer travel to Japan at this time and those in Japan should consider departing," it said.

As operators of the Fukushima plant tried to douse overheating reactors, U.S. officials warned about the risks of getting anywhere near the area and relied on their own officials for details about the danger.

"The situation has deteriorated in the days since the tsunami and ... the situation has grown at times worse with potential greater damage and fallout from the reactor," White House spokesman Jay Carney told reporters.

U.S. officials took pains not to criticize the Japanese government, which has shown signs of being overwhelmed by the crisis that began after last Friday's devastating 9.0 magnitude earthquake and resulting tsunami.

But Washington's actions indicated a divide with the Japanese about the perilousness of the situation.

U.S. President Barack Obama told Japanese Prime Minister Naoto Kan in a telephone call that the United States will do all it can to help Japan recover, the White House said.

"The president briefed Prime Minister Kan on the additional support being provided by the U.S., including specialized military assets with expertise in nuclear response and consequence management," it said in a statement.

The State Department recommended that U.S. citizens within 50 miles of the plant leave the area or stay indoors.

Japan's government has asked people living within 12 miles to evacuate and those between 12 miles and 18 miles to stay indoors.

PLUME OF RADIATION

Gregory Jaczko, the top U.S. nuclear regulator, cast doubt on efforts to cool overheating reactors, saying workers may be hit with "lethal doses" of radiation.

"It would be very difficult for emergency workers to get near the reactors," Jaczko said.

A United Nations forecast projects the radioactive plume from the Fukushima facility would reach the Aleutian Islands on Thursday and hit Southern California late on Friday, The New York Times reported.

The projection, calculated on Tuesday and obtained by the newspaper, gives no information about actual radiation levels, it said. Health and nuclear experts emphasize that radiation in the plume will be diluted as it travels and will have extremely minor health consequences in the United States, it reported.

The U.S. military has ordered its forces to stay 50 miles away from the plant, the Pentagon said. There are at least 55,000 members of the U.S. forces in Japan and offshore assisting the relief operation.

"All of us are heartbroken by the images of what's happening in Japan and we're reminded of how American leadership is critical to our closest allies," Obama said in Washington.

"Even if those allies are themselves economically advanced and powerful, there are moments where they need our help, and we're bound together by a common humanity."

CONFLICTING REPORTS

The State Department's warning to U.S. citizens was based on new information collected by the U.S. Nuclear Regulatory Commission, Department of Energy and other U.S. sources.

The United States is trying to deploy equipment in Japan that can detect radiation exposure at ground level, U.S. Energy Secretary Steven Chu told a congressional hearing.

The detection system is part of equipment and 39 personnel from the Energy Department sent to Japan, he said. It has also provided equipment to monitor airborne radiation.

The United States is deploying more radiation monitors on Hawaii and other U.S. islands even though it does not expect harmful levels of radiation to reach U.S. soil, environmental regulators said.

Chu declined to tell lawmakers, when asked, whether he was satisfied with Japan's response so far to its nuclear crisis.

"I can't really say. I think we hear conflicting reports," Chu said. "This is one of the reasons why (the United States is) there with boots on the ground ... to know what is really happening."

Beyond the risk to workers at or near the damaged nuclear plant, one scientist, Dr. Ira Helfand, warned of possible widespread contamination of people and land.

"We need ... to focus on the radioactive isotopes being dispersed at some distance from the plant, because this is going to cause a whole different set of health problems," Helfand, past president of the anti-nuclear group Physicians for Social Responsibility, said in a telephone briefing.

The Obama administration has maintained its support for expanding U.S. use of nuclear energy despite renewed fears about its safety after the events in Japan.

But Secretary of State Hillary Clinton said on Wednesday the crisis raised questions about the use of nuclear energy in the United States.

"What's happening in Japan raises questions about the costs and the risks associated with nuclear power but we have to answer those," she said in an interview with MSNBC in which she emphasized the need for a comprehensive U.S. energy policy.

"We get 20 percent of our energy right now in the United States from nuclear power."

(Additional reporting by Ayesha Rascoe, David Morgan, Andrew Quinn, Paul Eckert, Matt Spetalnick, Alister Bull, Patricia Zengerle, Steve Holland, Deborah Zabarenko and Phil Stewart; Editing by Peter Cooney and John O'Callaghan)

By Jeff Mason and Tom Doggett

Originally published by www.yahoo.com


Wednesday, March 16, 2011

How Does Potassium Iodide (KI) Pill Provide Anti-Radiation Protection?


Going back to June 23, 1966, the New England Journal of Medicine. Vol. 274 on Page 1442 states:

    "The thyroid gland is especially vulnerable to atomic injury since radioactive isotopes of iodine are a major component of fallout."

Cresson H. Kearny, the author of Nuclear War Survival Skills, Original Edition Published September, 1979, by Oak Ridge National Laboratory, a Facility of the U.S. Department of Energy (Updated and Expanded 1987 Edition) states on page 111:

    "There is no medicine that will effectively prevent nuclear radiations from damaging the human body cells that they strike.

    However, a salt of the elements potassium and iodine, taken orally even in very small quantities 1/2 hour to 1 day before radioactive iodines are swallowed or inhaled, prevents about 99% of the damage to the thyroid gland that otherwise would result. The thyroid gland readily absorbs both non-radioactive and radioactive iodine, and normally it retains much of this element in either or both forms.

    When ordinary, non-radioactive iodine is made available in the blood for absorption by the thyroid gland before any radioactive iodine is made available, the gland will absorb and retain so much that it becomes saturated with non-radioactive iodine. When saturated, the thyroid can absorb only about l% as much additional iodine, including radioactive forms that later may become available in the blood: then it is said to be blocked. (Excess iodine in the blood is rapidly eliminated by the action of the kidneys.)"

The Nuclear Regulatory Commission (NRC) stated July 1, 1998 in USE OF POTASSIUM IODIDE IN EMERGENCY RESPONSE:

    "Potassium iodide, if taken in time, blocks the thyroid gland's uptake of radioactive iodine and thus could help prevent thyroid cancers and other diseases that might otherwise be caused by exposure to airborne radioactive iodine that could be dispersed in a nuclear accident."

Federal Register. Vol. 43 Friday, December 15, 1978, states in Potassium Iodide as a Thyroid Blocking Agent in a Radiation Emergency:

    "Almost complete (greater than 90%) blocking of peak radioactive iodine uptake by the thyroid gland can be obtained by the oral administration of ... iodide ..."

National Council on Radiation Protection and Measurements. NCRP Report NO. 55. Protection of the Thyroid Gland in the Event of Releases of Radioiodine. August, 1979, Page 32:

    "A major protective action to be considered after a serious accident at a nuclear power facility involving the release of radioiodine is the use of stable iodide as a thyroid blocking agent to prevent thyroid uptake of radioiodines."

The recently updated (1999) World Health Organization (WHO) Guidelines for Iodine Prophylaxis following Nuclear Accidents states:

    "Stable iodine administered before, or promptly after, intake of radioactive iodine can block or reduce the accumulation of radioactive iodine in the thyroid."

And, finally, the recently (November, 2001) released FDA document Potassium Iodide as a Thyroid Blocking Agent in Radiation Emergencies states:

"The effectiveness of KI as a specific blocker of thyroid radioiodine uptake is well established (Il'in LA, et al., 1972) as are the doses necessary for blocking uptake. As such, it is reasonable to conclude that KI will likewise be effective in reducing the risk of thyroid cancer in individuals or populations at risk for inhalation or ingestion of radioiodines."


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Originally published by
http://www.ki4u.com/#1







What is Potassium Iodide (KI)?


What is Potassium Iodide (KI)?

Potassium Iodide (chemical name 'KI') is much more familiar to most than they might first expect. It is the ingredient added to your table salt to make it iodized salt.
Potassium iodide is a special kind of protective measure in that it offers very specialized protection. Potassium iodide protects the thyroid gland against internal uptake of radioiodines that may be released in the unlikely event of a nuclear reactor accident.

Potassium Iodide (KI) is approximately 76.5% iodine.

For purposes of radiation protection the Nuclear Regulatory Commission (NRC) states in COMSECY-98-016 - FEDERAL REGISTER NOTICE ON POTASSIUM IODIDE:

    "In 1978, the U.S. Food and Drug Administration found KI "safe and effective" for use in radiological emergencies and approved its over-the-counter sale."

Most recently (November, 2001) the FDA states in Potassium Iodide as a Thyroid Blocking Agent in Radiation Emergencies:

"FDA maintains that KI is a safe and effective means by which to prevent radioiodine uptake by the thyroid gland, under certain specified conditions of use, and thereby obviate the risk of thyroid cancer in the event of a radiation emergency."


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Originally published by http://www.ki4u.com/#1