Cat Diabetes

Understanding Diabetes in Cats

Just like people, cats can develop diabetes—a condition where the body struggles to control blood sugar (glucose) levels. Most cats with diabetes have what's known as Type II Diabetes, which means their bodies still make insulin, but don’t use it properly.

What Does Insulin Do?

Insulin helps move sugar from the blood into the cells, where it’s used for energy. When insulin isn’t working right, sugar builds up in the bloodstream instead of fueling the body. That’s why diabetic cats may seem constantly hungry but still lose weight.

Signs of Diabetes in Cats

If you notice any of these changes in your cat, it might be time to talk with your veterinarian:

• Drinking more water than usual
• Peeing more often or outside the litter box
• Always hungry but losing or not gaining weight
• Sleeping more or seeming less active
• Dull or thinning coat

What Causes Diabetes in Cats?

Some cats are more at risk than others. Common risk factors include:

• Being older
• Being overweight
• Male neutered cats
• Low activity level
• Certain medications (like steroids)

How Is It Diagnosed?

Your veterinarian will examine your cat and likely start with a urine test to check for sugar and infection, followed by blood tests to measure glucose levels. A diagnosis of diabetes is made when blood and urine sugar levels are consistently high.

Managing Diabetes: You’re Not Alone

Hearing that your cat has diabetes can feel overwhelming, but it’s manageable, and we’re here to help you every step of the way. After diagnosis, your veterinarian will schedule a special diabetes consultation to go over everything you need to know, including:

• The right diet: Many diabetic cats benefit from a high-protein, low-carb diet. This also supports healthy weight loss if needed.
• Insulin: Your veterinarian will show you how to store it, give injections, and monitor your cat’s response.
• Monitoring at home: You'll learn what signs to watch for and how to track your cat’s blood sugar with easy tools.
• Follow-up care: Regular checkups are important to keep your cat feeling their best.

In some cases, especially with diet and weight management, cats can even go into remission—meaning they no longer need insulin!

Helpful Resources

Visit our Know Your Pet page for:

• How-to videos on giving insulin injections
• Tools for tracking blood sugar
• Expert advice and support from the VCA community