Hill's Pet Nutrition is to launch Prescription Diet y/d Feline for the nutritional management of feline hyperthyroidism in May.

According to the company, hyperthyroidism is the most commonly diagnosed endocrinopathy in cats globally, and is thought to affect around 10% of cats over the age of nine in the UK.¹.

Prescription Diet y/d Feline is clinically proven to manage thyroid health in three weeks³ and gives vets a new management modality to address the needs of hyperthyroid cats. Hill's says that the new product is essentially a low iodine food; production of thyroid hormones T3 and T4 require iodine molecules, so limiting the amount of dietary iodine reduces the amount of thyroid hormones produced and released by the thyroid gland.

Hill's highlights three key studies in peer reviewed veterinary journals which the company says demonstrates the efficacy of y/d.^2-4 The research identified that limiting the amount of iodine consumed resulted in a lowering of T₄ (serum total thyroxine) to normal levels, with significant reductions in just 3 weeks.²

Hill's says that the availabillity of nutrition as a treatment option marks a major step forward from invasive surgery, treatment with radioactive iodine - which is available in only a few centres in the UK - or pilling, which can prove to be particularly difficult for some pet owners. The company adds that a gradual transition to y/d is also an option where medical treatment is proving problematic.

Cats with hyperthyroidism have a multisystemic disease and concurrent problems can develop, such as hypertension, cardiovascular abnormalities and recurrent urinary infections. Additionally, many older cats with hyperthyroidism have concurrent renal dysfunction, which is often 'unmasked' when the hypertension is bought under control. Therefore, y/d also has controlled levels of phosphorus and low sodium for renal and circulatory health, reduced magnesium and moderate urine pH target for urinary health and taurine and carnitine for heart health.

Hill's Prescription Diet y/d Feline will be available from 1st May.

For more information, visit www.catthyroidhealth.com 

References

1. Symes H, Winter 2008/2009. Feline hyperthyroidism. The Endocrinologist. Issue 90, pp 10-12. Symes H, Winter 2008/2009. Feline hyperthyroidism. The Endocrinologist. Issue 90, pp 10-12.
2. Controlled level of dietary iodine normalizes serum total thyroxine in cats with naturally occurring hyperthyroidism Yu S, Wedekind KJ, Burris PA, et al. J Vet Intern Med 2011;25:683-684 (abstract).
3. Titration of dietary iodine for reducing serum thyroxine concentrations in newly diagnosed hyperthyroid cats Melendez LD, Yamka RM, Forrester SD, et al. J Vet Intern Med 2011;25:683 (abstract).
4. Titration of dietary iodine for maintaining normal serum thyroxine concentrations in hyperthyroid cats Melendez LD, Yamka RM, Burris PA. J Vet Intern Med 2011;25:683 (abstract).

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