Feline diabetes is more common than many owners realise, particularly in overweight, middle-aged and older cats. The encouraging news is that cats respond well to treatment, and some even go into remission and come off insulin entirely. Here's how to recognise the symptoms, what causes diabetes in cats, how it's diagnosed, and what treatment and daily care involve.
Symptoms of diabetes in cats
Diabetes occurs when a cat's body can't produce or properly use insulin, so glucose stays in the bloodstream instead of feeding the cells. Cats are masters at hiding illness, so the early signs are subtle but important:
- Drinking more water than usual
- Urinating more — you may notice heavier, more frequent clumps in the litter box
- A bigger appetite paired with unexplained weight loss
- Reduced energy, sleeping more, and a less shiny coat
- A "plantigrade" stance — walking flat on the hocks with dropped back legs, a sign of diabetic nerve damage
If your cat is drinking a lot more than normal and losing weight, it's a strong prompt for a vet check.
What causes diabetes in cats?
Most cats develop a form of diabetes similar to type 2 in people, where the body becomes resistant to insulin. Key risk factors include:
- Obesity — the single biggest risk factor for feline diabetes.
- Age — it's most common in cats over 7.
- Inactivity and an indoor, low-exercise lifestyle.
- Sex — neutered males appear to be at higher risk.
- High-carbohydrate diets over the long term.
- Other conditions such as pancreatitis or long-term steroid use.
How diabetes is diagnosed
Your vet will run blood and urine tests to check for high glucose. Cats are tricky here: stress alone can push a cat's blood sugar up temporarily, so a single high reading isn't enough. To confirm true diabetes, vets often use a test that reflects average glucose over the previous weeks, alongside the typical symptoms and glucose in the urine. This avoids misdiagnosing a stressed but healthy cat.
Treatment and management
Treatment aims to bring blood sugar back into a healthy range and, ideally, achieve remission. It usually combines:
- Insulin injections, typically twice a day. The needles are tiny and most cats tolerate them well; owners quickly become confident giving them.
- A low-carbohydrate, high-protein diet, which is central to feline diabetes care and often makes a dramatic difference. Your vet may recommend a therapeutic food; supportive health and wellness supplies help you keep the routine consistent.
- Weight management for overweight cats, done gradually and safely.
- Consistent feeding times aligned with insulin doses.
- Monitoring water intake, appetite, weight and litter-box output, plus glucose checks with your vet.
Learn to spot low blood sugar — wobbliness, weakness, disorientation or seizures — which is an emergency. Your vet will explain exactly what to do.
Early treatment plus a low-carb diet gives many cats a real shot at remission. Keeping meals and monitoring consistent with the right health and wellness supplies supports the whole plan.
Shop health supplies →Can diabetes be prevented?
You can meaningfully lower your cat's risk. Keeping your cat at a healthy weight is by far the most important step, since obesity drives most feline diabetes. Encourage activity with play and enrichment, feed a balanced diet that isn't excessively high in carbohydrates, and schedule regular vet check-ups so any early changes are caught before they progress. For cats already at risk, weight control can even help prevent a diabetic relapse.
When to see a vet
Book a check-up if your cat is drinking or urinating more, losing weight, eating ravenously, or walking oddly on its hocks. Seek emergency care immediately if a diabetic cat becomes weak, wobbly, disoriented, collapses, has seizures, or starts vomiting and refusing food — these can be signs of dangerously low blood sugar or a serious complication that needs urgent treatment.
Not sure if it's serious? Scan the symptom in seconds
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Download the MyFurtopia AppFrequently asked questions
What are the early signs of diabetes in cats?
The most common early signs are drinking more, urinating more (often noticeably heavier litter), a strong appetite alongside weight loss, and lower energy. Some diabetic cats also develop a plantigrade stance, walking on their hocks with dropped back legs. If your cat is drinking and weeing far more than usual, ask your vet to check for diabetes.
Can cats recover from diabetes?
Yes, unlike dogs, many cats can go into diabetic remission, meaning they no longer need insulin. This is most likely when the condition is caught early and treated promptly with insulin and a low-carbohydrate diet, along with weight loss in overweight cats. Even cats that don't reach remission are usually well controlled with ongoing treatment.
What is the best diet for a diabetic cat?
Most diabetic cats do best on a high-protein, low-carbohydrate diet, which helps keep blood sugar stable and supports weight loss in overweight cats. Your vet may recommend a specific therapeutic food, fed on a consistent schedule timed around insulin. Any diet change should be made under veterinary guidance, since it can quickly affect insulin needs.
This guide is educational and not a substitute for professional veterinary care. If you're worried about your cat, contact your vet.