Iodine based biocides are often used as in-can preservatives, as well as helping to prevent the growth of mould after application. No one wants mouldy mouldings! The versatile element can be used as a contrasting agent in some medical x-ray imaging. The iodine essentially absorbs x-rays, preventing the radiation from passing through the tissue, and thereby produces a much clearer image of bodily structures like the vascular system or gastrointestinal tract.
Why iodine is essential for our health. Here are a few things we learned about greetings from Word of Mouth…. Radio 4 in Four. Main content. Nine fascinating facts about awesome iodine. We get most of our iodine from milk. Iodine regulates our metabolism. Our brains need iodine. Radioactive iodine can cure cancer. It was used to make the first photographs.
Radioiodine may also be a possible treatment option for thyroid cancer. It works in much the same way as hyperthyroid treatment. When you take radioactive iodine orally, the medication destroys thyroid cells, including cancerous ones.
It may be used as a treatment following thyroid surgery to make sure all cancerous cells have been removed from the body. According to the American Cancer Society , radioactive iodine treatments significantly improve the chances of survival for people with thyroid cancer.
You need more iodine in pregnancy. The recommended daily intake of iodine during pregnancy is mcg. By comparison, the recommended amount in non-pregnant adults is mcg a day. The recommended daily amount of iodine while nursing is mcg.
The same neurological benefits of iodine during pregnancy may extend to healthy brain function during childhood. This also includes a reduced risk of intellectual disability. It is likely your child gets all the iodine they need through their diet, but if you have any questions about their iodine intake, talk to their pediatrician.
As with brain development, iodine during pregnancy is associated with a healthy birth weight. One study of pregnant women with goiters found that mg of iodine taken daily for six to eight weeks was helpful in correcting goiters related to iodine deficiency. In turn, there was an overall improvement in birth weight in newborns.
In fact, taking iodine unnecessarily can cause health issues. This non-cancerous condition is most common in women of reproductive age, and it can cause painful breast lumps. Only take iodine for this condition if your doctor specifically recommends it. Otherwise, you could be at risk of side effects from iodine toxicity.
Iodine is just one method of water disinfection. Two percent liquid iodine tincture may be added to water in five-drop increments per one quart of clear water. If the water is cloudy, add ten drops per quart. In the case of nuclear emergencies, the Centers for Disease Control and Prevention recommends the use of potassium iodide KI to protect the thyroid gland from radiation injuries.
These are available in tablet and liquid formulas. The State of Victoria and the Department of Health shall not bear any liability for reliance by any user on the materials contained on this website.
Skip to main content. Healthy eating. Home Healthy eating. Actions for this page Listen Print. Summary Read the full fact sheet. On this page. Iodine in food Recommended dietary iodine intake How to get enough iodine in your diet Iodine deficiency Iodine and pregnancy Iodine deficiency in babies and children Excessive amounts of iodine can be harmful Where to get help.
Iodine in food Iodine is found naturally in a range of foods such as: dairy products seafood seaweed kelp eggs some vegetables. Iodine deficiency disorders , , World Health Organization. Zimmermann MB. Salt reduction , , World Health Organization. Monitoring the health impacts of mandatory folic acid and iodine fortification, , Australian Institute of Health and Welfare, Australian Government. An integrated supply risk index from 1 very low risk to 10 very high risk.
This is calculated by combining the scores for crustal abundance, reserve distribution, production concentration, substitutability, recycling rate and political stability scores.
The percentage of a commodity which is recycled. A higher recycling rate may reduce risk to supply. The availability of suitable substitutes for a given commodity. The percentage of an element produced in the top producing country. The higher the value, the larger risk there is to supply.
The percentage of the world reserves located in the country with the largest reserves. A percentile rank for the political stability of the top producing country, derived from World Bank governance indicators. A percentile rank for the political stability of the country with the largest reserves, derived from World Bank governance indicators. Specific heat capacity is the amount of energy needed to change the temperature of a kilogram of a substance by 1 K. A measure of the stiffness of a substance.
It provides a measure of how difficult it is to extend a material, with a value given by the ratio of tensile strength to tensile strain. A measure of how difficult it is to deform a material.
It is given by the ratio of the shear stress to the shear strain. A measure of how difficult it is to compress a substance. It is given by the ratio of the pressure on a body to the fractional decrease in volume. A measure of the propensity of a substance to evaporate. It is defined as the equilibrium pressure exerted by the gas produced above a substance in a closed system. This Site has been carefully prepared for your visit, and we ask you to honour and agree to the following terms and conditions when using this Site.
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Jump to main content. Periodic Table. Glossary Allotropes Some elements exist in several different structural forms, called allotropes. Discovery date Discovered by Bernard Courtois Origin of the name The name is derived from the Greek 'iodes' meaning violet. Allotropes I 2. Glossary Group A vertical column in the periodic table.
Fact box. Group 17 Melting point Glossary Image explanation Murray Robertson is the artist behind the images which make up Visual Elements. Appearance The description of the element in its natural form. Biological role The role of the element in humans, animals and plants.
Natural abundance Where the element is most commonly found in nature, and how it is sourced commercially. Uses and properties. Image explanation. The image is of seaweed. Many species of seaweed contain iodine. A black, shiny, crystalline solid. When heated, iodine sublimes to form a purple vapour. Photography was the first commercial use for iodine after Louis Daguerre, in , invented a technique for producing images on a piece of metal. These images were called daguerreotypes. Today, iodine has many commercial uses.
Iodide salts are used in pharmaceuticals and disinfectants, printing inks and dyes, catalysts, animal feed supplements and photographic chemicals. Iodine is also used to make polarising filters for LCD displays. Iodide is added in small amounts to table salt, in order to avoid iodine deficiency affecting the thyroid gland. The radioactive isotope iodine is sometimes used to treat cancerous thyroid glands. Biological role. Iodine is an essential element for humans, who need a daily intake of about 0.
Our bodies contain up to 20 milligrams, mainly in the thyroid gland. This gland helps to regulate growth and body temperature.
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