News tagged with iodine

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Radiation in Japanese children's thyroids

Forty-five percent of children tested in the region around Japan's stricken nuclear plant were found to have traces of radioactive elements in their thyroid glands, an official said Thursday.

Aug 18, 2011
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Trial makes thyroid cancer treatment safer and shorter

A new gold standard for thyroid cancer treatment has been set, reducing radiation doses to just one third of the current level, according to research from the CRUK-UCL Cancer Trials Centre. The results are published in New En ...

May 04, 2012
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Breastfeeding study finds need for iodine

(Medical Xpress)—A study involving researchers from Murdoch University, Curtin and Flinders universities has examined the use of nutritional supplements by pregnant and breastfeeding mothers and found potential ...

Nov 19, 2012
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Salt iodization works

The world's population has never been so well supplied with iodine as today. Major progress in salt iodization is evident in a new global study in school children done by nutrition researchers at the ETH Zurich. ...

Mar 01, 2012
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Iodine

Iodine (pronounced /ˈaɪ.ədaɪn/, /ˈaɪ.ədɨn/, or in chemistry /ˈaɪ.ədiːn/; from Greek: ιώδης iodes "violet"), is a chemical element that has the symbol I and atomic number 53. Naturally-occurring iodine is a single isotope with 74 neutrons.

Chemically, iodine is the second least reactive of the halogens, and the second most electropositive halogen; trailing behind astatine in both of these categories. However, the element does not occur in the free state in nature. As with all other halogens (members of Group XVII in the periodic table), when freed from its compounds iodine forms diatomic molecules (I2).

Iodine and its compounds are primarily used in medicine, photography, and dyes. Although it is rare in the solar system and Earth's crust, the iodides are very soluble in water, and the element is concentrated in seawater. This mechanism helps to explain how the element came to be required in trace amounts by all animals and some plants, being the heaviest element commonly used by living organisms (only tungsten, used in enzymes by a few bacteria, is heavier).

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