Iodine is a very important nutrient for the body. It is not just about salt, although you most often think of iodized salt when you hear the word. It keeps the thyroid gland functioning as well as keeping the body safe from outside pathogens due to its anti-fungal properties. We use it daily without even thinking about it.

Internal:
Iodine is an essential nutrient for proper functioning of the thyroid, the gland that produces thyroxine (T4) and triiodothyronine (T3). These hormones regulate the body’s metabolism and impact many other bodily functions, including weight management, heat regulation, feed utilization and proper bone growth and maturation. Because the thyroid is controlled by the hypothalamus and the pituitary, glandular functions must not be ignored when dealing with prevalent conditions like Cushings.

"Nearly 75% of the iodine in an animal's body is in the thyroid gland. Iodine deficiency may result in goiter as the thyroid gland enlarges in an attempt to produce thyroxine. In the horse, goiters often occur in the foal at birth. Foal goiter may result from a deficiency in iodine in the mare’s ration during pregnancy or it may be caused by a goitrogenic substance. Symptoms of iodine deficiency may be a stillborn foal or a very weak foal at birth that cannot stand and nurse. The foal may also have a rough hair coat, contracted tendons, angular limb deformities or other abnormal bone." (www.steedfeed.com)

Most commonly found in iodized salt, iodine occurs naturally in kelp and seafood (clams, lobster, oysters, sardines and ocean fish). The iodine content of fruits and vegetables is dependent upon soil content.

External:
From a topical perspective, iodine is used as an anti-fungal, anti-bacterial preparation for rain rot, scratches or other conditions that need drying out. Use it as a sole paint to help toughen up sensitive soles if the footing is hard and rocky. Veterinarians incorporate it into what is called an internal blister, typically for stifles, splints and high suspensory injuries. Any topical containing higher than a 2% solution of iodine must be registered as a drug. Use iodine as a topical knowing it will stain light colored horses a yellowish color that may take some time to fade.

Credit: The Holistic Horse Magazine www.holistichorse.com