Nutritional Management of Endocrine and Metabolic Disease
Key diseases
Diabetes mellitus: focus on consistency, controlled carbohydrate intake, and weight management. In cats, high-protein, low-carbohydrate canned diets can improve glycemic control and sometimes induce remission; meal timing should align with insulin. In dogs, consistent meals and fiber (especially soluble fiber) help flatten glucose curves.
Hyperthyroidism (cats): treat the thyroid; nutrition supports muscle and weight recovery. Iodine-restricted diets are an option for some cats but require strict compliance and monitoring. Hypothyroidism (dogs): manage weight and avoid overfeeding; thyroid hormone replacement is the primary therapy.
Hyperadrenocorticism and other endocrinopathies: weight and muscle monitoring; watch for concurrent diabetes.
Traps
- Do not assume a single diet cures disease; nutrition is adjunctive.
- Weight loss in hyperthyroid cats can mask muscle wasting; reassess after treatment.
- Feline diabetes remission depends on diet, insulin, and weight, not diet alone.
- Fiber and carbohydrate claims are often oversimplified in questions; match the diet strategy to species.
Worked example
An obese diabetic cat: calculate energy for ideal weight, choose a high-protein low-carbohydrate canned diet, feed measured meals timed with insulin, and recheck glucose curves and body weight every 2-4 weeks.