The Effect of Minerals on the IR Horse

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The best place to start supporting your IR horse is a low sugar and starch diet with a balanced intake of key minerals. Minerals have direct and indirect involvement in virtually every action in the body, and have important effects on Insulin Resistance (IR) and its consequences. IR is different in the horse than in the human, but the same basic principals apply, which is evidence of activated antioxidant defenses in the tissues of IR horses.

Building the horse’s own antioxidant basic defenses is most effective. This includes the SOD, catalase and glutathione peroxidase enzyme systems, as well as the antioxidants glutathione, CoQ10, carotenoids and vitamin A, flavanoids, and vitamins E and C. Glutathione is particularly widely distributed.

SOD absolutely requires copper and zinc. Catalase requires iron, which is not an issue as the typical equine diet supplies plenty of iron.

Glutathione activity depends on Selenium, a very common deficiency. Selenium is also essential for the generation of the active form of thyroid hormone, T3, from T4.

Zinc is a commonly deficient mineral. Low serum Zinc is associated with IR and type 2 diabetes in humans and rats. Supplementation of zinc supports defenses against type 2 diabetes in rat models. Exactly why has not been determined. It is known that zinc is important on several levels, involved in insulin release and sensitivity as well as being an antioxidant in SOD.

Like zinc, copper is critical for SOD function. Copper deficiency causes IR and fatty liver in rats. Low liver copper is found in human fatty livers. Deficiency is also linked to higher liver iron in IR, a known problem in IR horses too.

Magnesium has been associated with IR for forty years with hundreds of human papers dedicated to the subject. Magnesium is not a treatment, but by correcting a deficiency it makes the disease easier to control.

Magnesium dietary intake and magnesium status - whole body levels - are both associated with strong defenses against IR and they deteriorate when someone develops IR. It becomes a cycle you need to stay on top of to allow stabilization.

A 2013 study included almost 2000 non-diabetic subjects followed for 15.6 years. Magnesium intake was a “significant protective factor” against type 2 diabetes, including progression from IR to diabetes. Researchers could predict who would most likely become IR by looking at their magnesium levels.

Magnesium increases insulin receptor number and sensitivity in experimental rodent IR. Magnesium deficiency interferes with insulin signaling. Deficiency has also been linked to activation of allergic and inflammatory reactions.

Iodine is essential to production of thyroid hormone. Low iodine status has been identified in human patients with type 2 diabetes. Normal thyroid function is required for insulin sensitivity.

IR horses may also have low thyroid hormone levels in some cases. This is probably euthyroid sick syndrome, meaning it is an effect rather than a cause. In most of these horses, with correct levels of Selenium and Iodine, and control of IR, the levels will rise again. Low thyroid is not a primary part of the syndrome but can make some horses very depressed and lethargic. Thyroid supplementation can be used, but by addressing the above you will not need supplementation long term.

Uckele Health & Nutrition, maker of CocoSoya, offers formulas that support the IR horse.

Glycocemic EQ supports healthy insulin levels by providing nutrient levels that are compatible with a wide variety of diets and sources of hay. Targeted ingredients also promote balanced immune and thyroid function, glucose metabolism, healthy nerve function, and insulin sensitivity. 

Magnesium Oxide provides a highly concentrated source of Magnesium to support healthy sugar metabolism, muscle and heart function, and promote normal nervous system function.

U-Balance Foundation is a concentrated, low-calorie amino acid, vitamin and mineral balancer for horses. This potent vitamin and mineral pellet formula provides the three most important amino acids: L-Lysine, DL-Methionine and L-Threonine, without adding the extra calories that come with balancers fed in higher amounts.

Bioplex Magnesium is a bioavailable source of Magnesium to ensure a higher level of delivery to cells to promote healthy muscles and nervous system function. 

About the Author

Dr. Eleanor Kellon, staff veterinary specialist for Uckele Health & Nutrition, is an established authority in the field of equine nutrition for over 30 years, and a founding member and leader of the Equine Cushings and Insulin Resistance (ECIR) group, whose mission is to improve the welfare of horses with metabolic disorders via integration of research and real-life clinical experience. Prevention of laminitis is the ultimate goal. For more information visit www.ecirhorse.org.

Uckele Health & Nutrition, maker of CocoSoya, is an innovation-driven health company committed to making people and their animals healthier. On the leading edge of nutritional science and technology for over 50 years, Uckele formulates and manufactures a full spectrum of quality nutritional supplements incorporating the latest nutritional advances. For more information visit  www.uckele.com.