Did I cause my (already hyperthyroid) cat's diabetes?

Thanks for your question. It’s understandable to be concerned about your cat’s health, and it’s great that you’re reaching out for information. Hyperthyroidism and diabetes are both common endocrine disorders in cats, but one does not necessarily cause the other. Instead, they can sometimes co-occur, especially as cats get older.



Hyperthyroidism usually results from an overproduction of thyroid hormones and isn’t directly caused by a pet owner's actions. Diabetes, on the other hand, involves insulin imbalances and can be influenced by factors like obesity, diet, and genetics. Since both conditions affect metabolism, they can have overlapping symptoms, which might make one condition more noticeable when the other is present.



At home, ensuring your cat has a healthy diet and maintains a healthy weight is immensely beneficial. Regular veterinary check-ups are important, especially for monitoring both conditions and adjusting treatment plans as needed. Watch for signs like increased thirst, frequent urination, weight loss despite a good appetite, or lethargy—these may indicate your cat's conditions need to be reassessed.



If you notice any concerning symptoms or if your cat’s condition seems to change, there’s no harm in booking a video consult with one of our vets on Dial A Vet. They can provide a more personalized assessment and guide you on the best course of action.