Can a cat recover from diabetes?

Yes, some cats can enter "clinical remission," meaning their blood sugar levels return to normal and they no longer require insulin injections. This is most common in cats that achieve significant weight loss and are maintained on a strict low-carbohydrate, high-protein diet shortly after diagnosis.

Is it difficult to give insulin injections to a cat?

Most pet parents find it much easier than expected! Modern insulin needles are incredibly thin and small, meaning most cats barely feel the prick, especially if distracted by a small, high-protein treat or a chin rub. Your vet will show you the "tenting" technique to make the process stress-free for both of you.

What happens if I miss a dose of insulin?

If you miss a dose or aren't sure if the full dose went in, it is generally safer to skip that dose and wait until the next scheduled time. Never give a double dose to "make up" for a missed one, as dangerously low blood sugar is more life-threatening than a temporary spike. Always contact your vet for specific advice if this happens.

Why is my diabetic cat suddenly wobbly or sleepy?

This could be a sign of hypoglycaemia (low blood sugar), which is a medical emergency. If your cat appears weak, uncoordinated, or lethargic after an insulin dose, try to get them to eat or rub a small amount of honey or glucose syrup onto their gums, then contact your vet immediately.

Can I give my diabetic cat treats?

You can, but consistency is key. Avoid standard treats that are high in carbohydrates or sugars. Instead, opt for small pieces of plain, boiled chicken or freeze-dried meat treats. Always check with your vet before adding treats to their regulated meal plan.

Last Updated: 19/02/2026

Diabetes in Cats: Causes, Symptoms, Treatment and Prevention

Is your cat thirstier than usual? Our expert guide to feline diabetes covers everything from identifying early warning signs like weight loss and increased urination to managing the condition with specialised diets and long-term monitoring tips.

Author: Dr Joey Koh DVM

Reading Time: 9 minutes - short read

Finding out your feline friend has diabetes can feel overwhelming, but it is a manageable condition that many cats live with quite comfortably. Essentially, diabetes occurs when a cat’s body can’t properly move sugar from the bloodstream into their cells for energy, usually because of issues with a hormone called insulin. While it sounds technical, the goal of treatment is simple: keeping those blood sugar levels stable so your cat can get back to their quirky, happy self. With a few adjustments to their routine and a watchful eye, you can help your pet thrive.

What is feline diabetes?

glucometer with test strips and syringes

Diabetes is a disease that occurs when when there is a failure to regulate blood sugar and inability to utilise glucose as an energy source by the body. The pancreas is an a small organ located near the stomach, containing beta cells that produces this hormone essential for controlling sugar levels in the blood.

Insulin is produced by the pancreas. Insulin regulates the glucose (sugar) level in the blood, and controls the delivery of glucose to the tissues. There are also other factors that can contribute to resistance of the effect of insulin as well, which also increases the sugar levels in our blood!

What causes diabetes?

In cats, diabetes can be commonly caused by deposition of amyloid (a type of protein) in the pancreas. Other factors that can contribute to insulin resistance are obesity, concurrent endocrine diseases (eg. Cushings), pancreatitis and certain drugs (eg. progestogens and steroids).

The most common type of diabetes in cats is type 2 - where insulin producing cells remain, but either the amount of insulin is insufficient, or tissues in the body are resistant to it. Obesity is a major factor in this type and it occurs more frequently in middle aged to older cats.

Recognising the signs of diabetes

Signs of diabetes may include:

Increased thirst
Increased urination
Weight loss often despite a ravenous appetite
Hindlimb weakness
Poor hair coat quality

Did you know - deterioration in eye sight can also occur due to the presence of diabetic cataracts, which can occur very rapidly after the onset of the disease.

How veterinarians diagnose diabetes

Identifying diabetes in cats requires a bit of detective work. Because our feline friends are masters at hiding discomfort, veterinarians use a combination of physical exams, history taking, and specific diagnostic tests to confirm a diagnosis.

The clinical examination

The process begins with a thorough physical exam. Your vet will check your cat's body condition, coat quality, and hydration levels. They will also ask detailed questions about any changes you’ve noticed at home - specifically regarding "the big four": increased thirst, increased urination, increased appetite, and weight loss.

Initial screening: urine and blood

The first diagnostic step is often a simple urine dipstick test. In a healthy cat, the kidneys reabsorb all glucose, so there should be none in the urine. If glucose "spills over" into the urine, it is a strong indicator that blood sugar levels are abnormally high.

A single high blood sugar reading isn't always enough for a definitive diagnosis. Cats are prone to stress hyperglycaemia - a temporary spike in blood sugar caused by the adrenaline of a car ride or a visit to the clinic. To ensure we aren't misinterpreting a "scaredy-cat" reaction for true diabetes, further testing is required.

Definitive confirmation: the fructosamine test

To get the full picture, vets often perform a serum fructosamine test. Think of this as the "long-term memory" of blood sugar. While a standard glucose test shows us a single moment in time, a fructosamine test measures the average blood glucose levels over the previous two to three weeks.

If fructosamine is high: It confirms a persistent state of high blood sugar (diabetes).
If fructosamine is normal: The high sugar seen during the exam was likely just a temporary stress response.

Why early detection is tricky

Early signs of diabetes can be incredibly subtle. If your cat spends a lot of time outdoors, you might not notice they are visiting the "bathroom" more often or drinking from puddles and ponds.

Diet also plays a role in masking symptoms. Cats on wet food diets naturally get a large portion of their daily hydration from their meals. Because they are already well-hydrated by their food, the "excessive thirst" typical of diabetic cats might not be as obvious as it would be in a cat eating dry kibble. Keeping a close eye on their weight and coat condition is often the best way to spot early changes.

Treatment and management options

Helping a cat with diabetes live a long, happy life is very achievable, but it does require a dedicated partnership between you and your vet. Success comes down to consistency in their daily routine, specifically regarding diet, exercise, and medication.

Modern treatment options: injections and oral tablets

For many years, twice-daily insulin injections were the only reliable treatment. While the idea of needles can be daunting, most pet parents quickly find it becomes a simple, stress-free part of the morning and evening mealtime routine.

However, veterinary medicine has seen some exciting breakthroughs recently. There are now once-daily oral medications (known as SGLT2 inhibitors) available for certain diabetic cats. These medications work by helping the kidneys remove excess sugar from the blood through the urine. While these aren't suitable for every cat - particularly those who are already very ill or those who are dependent on insulin - they are a game-changer for many owners who struggle with injections. Your vet can help determine if your cat is a candidate for this newer approach.

Monitoring at home and in the clinic

To ensure the treatment is working safely, you’ll need to keep a close eye on your cat’s habits. Monitoring their water intake, appetite, and weight provides vital clues about their progress.

Many owners now use home glucose monitoring devices, similar to those used by humans, or even continuous glucose monitors (small sensors applied to the skin). These tools allow you to track sugar levels in a relaxed home environment, providing your vet with much more accurate data than a single reading taken in a stressful clinic setting.

Safety first: identifying low blood sugar

The most important safety consideration when treating diabetes is avoiding hypoglycaemia, or low blood sugar. This can happen if a cat receives too much insulin or doesn't eat enough after their dose.

Signs of low blood sugar include:

Extreme weakness or listlessness
Lack of coordination (staggering or "drunken" walking)
Muscle twitching or tremors
Seizures or loss of consciousness

If you notice any of these signs, try to get your cat to eat immediately. If they are unable to eat, rub a small amount of honey or glucose syrup directly onto their gums and contact your veterinarian or an emergency after-hours clinic straight away.

Choosing the best diet for diabetic cats

When it comes to managing feline diabetes, what goes into the bowl is just as important as the medication prescribed by your vet. In fact, for a specific group of cats, the right diet can be the key to reversing the condition entirely.

Why protein and carbohydrates matter

For most diabetic cat, a diet high in protein and very low in carbohydrates is the best dietary approach.

When a cat eats carbohydrates, they are quickly broken down into glucose, causing a sharp "spike" in blood sugar. By choosing a low-carb diet, we reduce the amount of glucose entering the bloodstream from the digestive tract. This creates a much more stable environment, often allowing the cat’s own pancreas to rest and, in many cases, significantly lowering the amount of insulin required.

Therapeutic diets for diabetes

While there are many "grain-free" options on the market, therapeutic prescription diets are specifically formulated to manage glucose levels. Options like Hill's Prescription Diet m/d or Royal Canin Diabetic are designed with a precise balance of nutrients to support metabolic health.

Important Note: You must consult your veterinarian before switching to a therapeutic diet. Because these foods are effective at lowering blood sugar, your cat's insulin dose may need to be adjusted immediately to prevent hypoglycaemia.

The role of weight loss and remission

Obesity is one of the biggest risk factors for type 2 diabetes in cats, as excess fat cells create resistance to insulin. For overweight cats, a structured weight loss plan is often the most effective "medicine" available.

As a cat reaches its ideal body weight, the body often becomes more sensitive to insulin again. For some lucky cats, this leads to diabetic remission - a state where their blood sugar levels remain normal without the need for daily medication. While this isn't possible for every cat, especially those with more advanced disease, achieving an ideal weight always improves their overall quality of life and makes the diabetes much easier to manage.

Can diet alone work?

In very mild cases, or in the very early stages of the disease, some cats can be managed "conservatively" with diet and weight loss alone. However, most cats will still require a period of medication (either insulin or newer oral options) to get their levels under control while the diet begins to work its magic.

Long-term monitoring and remission

Ongoing monitoring at home and in clinic is important, to ensure good diabetic control for your cat, and increase the chance of remission.

At home monitoring includes:

Time of insulin dosage
Amount of insulin administered
Amount and time of food and water intake

An easy way to monitor water intake is to fill your cat's water bowl with a set amount of water, then measure the amount left 24 hours later. It's important to advise your vet of significant changes to water intake, as well as any loss or increase in appetite, weakness, vomiting or diarrhoea ASAP.

Your vet will advise the best frequency of blood glucose checks for your cat. This may involve a day in clinic for a blood glucose curve, a blood test to check fructosamine levels, or at home glucose monitoring.

FAQs

A diabetes diagnosis is the start of a new chapter in your cat's care, but it certainly isn't the end of their high-quality life. By staying consistent with their diet, monitoring their habits at home, and working closely with your vet, you might even see your cat enter clinical remission. Every small step you take in their daily routine helps ensure they stay happy, hydrated, and purring for years to come.