CATS · Condition guide
Feline diabetes mellitus: real veterinary cases
Feline diabetes looks more like human type-2 than the auto-immune type-1 seen in dogs — insulin resistance plus declining pancreatic beta-cell function, often layered on top of obesity. Classic signs are increased thirst and urination, weight loss despite a normal or even ravenous appetite, and occasionally a plantigrade stance (back legs flat on the ground) from diabetic neuropathy.
The good news: with appropriate insulin therapy and a strict low-carbohydrate diet started early, around 30-50% of cats achieve diabetic remission within a few months and can come off insulin entirely. The window for remission narrows fast, so prompt and tight glycemic control matters a lot.
What vets typically check for
- Persistently elevated blood glucose + glucosuria, with clinical signs.
- Fructosamine to confirm sustained hyperglycemia (rules out stress hyperglycemia in cats).
- Treatment: long-acting insulin (glargine, PZI) or oral SGLT2-inhibitor (Bexacat) in selected cases.
- Strict low-carbohydrate diet (canned diabetic formulations).
- Home glucose curves and continuous glucose monitors (Freestyle Libre) are increasingly standard.
Not a replacement for veterinary care. Use this to walk into the conversation prepared, not to self-diagnose.
Real cases from the veterinary literature
Peer-reviewed reports our semantic search surfaces for Feline diabetes mellitus. Click into any case for the full abstract — or run a personalised search with your pet's exact details.
- Effects of diet on glucose control in cats with diabetes mellitus treated with twice daily insulin glargine.
Journal of feline medicine and surgery · 2009 · United States
This study looked at how changing a cat's diet might help manage diabetes when they are also receiving insulin glargine, which is given twice a day. Twelve cats were split into two groups: one group ate a low carbohydrate, high protein diet, while the other group had a regular diet, and they were monitored over 10 weeks. By the end of the study, two cats were able to stop needi
- Intensive blood glucose control is safe and effective in diabetic cats using home monitoring and treatment with glargine.
Journal of feline medicine and surgery · 2009 · Germany
This study looked at how well diabetic cats can be managed at home by their owners using a specific protocol. Fifty-five cats were involved, and the owners monitored their pets' blood sugar levels while feeding them a very low carbohydrate diet and giving them a type of insulin called glargine for over ten weeks. The results showed that about 64% of the cats went into remission
- Treatment of newly diagnosed diabetic cats with glargine insulin improves glycaemic control and results in higher probability of remission than protamine zinc and lente insulins.
Journal of feline medicine and surgery · 2009 · Australia
In a study involving 24 newly diagnosed diabetic cats, researchers looked at how well different types of insulin helped control blood sugar levels and the chances of the cats going into remission. The cats were treated twice a day with either glargine insulin, protamine zinc insulin (PZI), or lente insulin, while also eating a low carbohydrate diet. After 17 days, the cats rece
Frequently asked questions
- Can my cat really go into remission?
- Yes. 30-50% of cats started on glargine + a strict low-carb wet diet within weeks of diagnosis achieve remission and come off insulin. The longer hyperglycemia persists before treatment, the lower the remission rate — so prompt, tight control matters.
- Is the SGLT2 inhibitor (Bexacat) right for my cat?
- Bexacat is a once-daily oral option for newly-diagnosed, otherwise healthy cats — it's a real change for owners who can't inject. But it's not appropriate for cats with ketones, pancreatitis, or significant comorbidities, and DKA risk requires careful monitoring.
- How do I learn to give insulin injections?
- The needles are very fine and the volume tiny — most cats barely notice. Your vet team will walk you through it in clinic. The biggest pitfall is varying the dose without checking glucose first; consistency matters more than perfection.