Iodine is a naturally occurring trace mineral that is found in the body, and it can be derived from a number of food sources, including kelp, sea bass, perch and cod. This mineral is essential for cell metabolism, according to the University of Maryland Medical Center. It occurs naturally as a gas, and as a solid in the form of iodine crystals. The solid form has several applications for personal health as well as the production of illegal drugs. Although iodine toxicity is rare, you should check with your physician before increasing your daily intake of this trace mineral.
Water Purification
Iodine crystals can be used to purify drinking water, and are particularly useful for camping and other activities that limit accessibility to potable water, according to the Granny's Store website. Iodine crystals easily sublime, or turn from a solid to a gas, when placed in one or two ounces of water. The iodine-saturated water can then be added to a canteen or water bottle to kill bacteria and neutralize other contaminants that can cause illness. Campers can use 4g to 8g of iodine crystals to purify water almost indefinitely, since the crystals can be reused.
Hypothyroidism
Iodine is necessary for the regulation of the thyroid gland, and the prevention of hypothyroidism, according to the University of Maryland Medical Center. Hypothyroidism occurs when the thyroid gland does not produce enough hormones to effectively metabolize nutrients and fats. This can lead to weight gain, lethargy and a variety of other maladies. Table salt is a primary source of iodine in the Western world--iodine crystals are added to table salt to combat iodine deficiency.
Methamphetamine Production
Although several techniques can be used to make methamphetamine, the most common method is called ephidrene/pseudoephidrine reduction, according to the National Drug Intelligence Center. Methamphetamine producers use iodine crystals to produce hydriodic acid, which is used as a reagent, or a catalyst for chemical reaction, in this type of methamphetamine manufacturing. This reagent is made by combining iodine crystals, water and phosphorus. Methamphetamine production is both illegal and inherently dangerous, and involves the handling of ignitable and toxic substances, according to the New York State Office of Alcoholism and Substance Abuse Services.
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