Feline Acromegaly: Welfare and Management Deep Dive

Key Facts

• Acromegaly is now recognized as a common cause of insulin-resistant diabetes mellitus in cats — prevalence 25-35% in diabetic cats
• Excess growth hormone causes increased insulin resistance, enlarged organs, and characteristic facial changes
• Cats develop a broad face, enlarged paws, prognathism (jaw protrusion), and abdominal organ enlargement
• High insulin doses (sometimes 20+ units twice daily) are required to manage blood glucose in acromegalic cats
• Pituitary radiation therapy provides remission in many cases — reducing the tumor reduces growth hormone
• MRI or CT of the pituitary confirms the diagnosis

Welfare Considerations

Feline acromegaly significantly impairs welfare through poorly controlled diabetes and the physical changes from growth hormone excess. Cats with uncontrolled diabetes experience polyuria, polydipsia, weight loss, and weakness. The behavioral changes from osmotic diuresis and hypoglycemia are distressing. Identifying acromegaly is critical because it changes diabetes management fundamentally — without treating the growth hormone excess, glucose control is nearly impossible. Radiation therapy improves glucose regulation dramatically in many cats, reducing insulin requirements and improving quality of life substantially.

What You Can Do

• Screen all cats with insulin-resistant diabetes (requiring more than 2 units per kg twice daily) for acromegaly
• Pursue MRI or CT of the pituitary in confirmed or suspected acromegalic cats to guide treatment decisions
• Discuss referral for pituitary radiation therapy with a veterinary oncologist — outcomes are often very good
• Monitor blood glucose curves at home using flash glucose monitors for more precise management
• Adjust insulin doses frequently — acromegalic cats have highly variable insulin requirements