Diabetes in Cats – Signs, Symptoms, Treatment, and Prevention

Key Takeaways

  • Diabetes mellitus in cats is a growing concern, especially for overweight and older cats. Early detection can significantly improve the prognosis.

  • The first signs of diabetes in cats include excessive thirst, increased urination, and unexplained weight loss. If left untreated, it can progress to diabetic ketoacidosis in cats, a life-threatening emergency.

  • Treatment involves insulin therapy, dietary management, and lifestyle changes to help control sugar diabetes in cats and improve quality of life.

What Causes Diabetes in Cats?

Understanding Diabetes Mellitus in Cats

Diabetes mellitus in cats occurs when a cat’s body is unable to regulate blood glucose (sugar) levels effectively due to either insufficient insulin production or insulin resistance. Insulin is a hormone produced by the pancreas, which allows glucose to enter cells and be used for energy. When insulin is deficient or ineffective, glucose builds up in the bloodstream, leading to high blood sugar levels (hyperglycemia).

In Orange County, CA, feline diabetes is particularly relevant due to high pet obesity rates. Many local pet owners unknowingly contribute to diabetes risk by overfeeding their cats, allowing free-feeding with high-carbohydrate dry food, or neglecting routine exercise. The suburban lifestyle, with more indoor-only cats, also contributes to a lack of physical activity, increasing the likelihood of obesity-related diabetes.

Risk Factors for Diabetes in Cats:

  • Obesity – Overweight cats are up to four times more likely to develop diabetes.

  • Poor Diet – Many commercial cat foods contain excessive carbohydrates, leading to insulin resistance.

  • Age & Genetics – Senior cats (over 7 years old) and certain breeds, like Burmese cats, have a higher risk.

  • Long-term Steroid Use – Medications like prednisolone (used for allergies or asthma) can trigger diabetes in predisposed cats.

  • Pancreatitis or Other Illnesses – Chronic pancreatitis, Cushing’s disease, or hormonal imbalances can lead to diabetes.

Local pet owners can reduce their cat’s diabetes risk by feeding a high-protein, low-carb diet and maintaining healthy weight control through regular vet check-ups at Bliss Animal Hospital.

A large orange and white tabby cat is lounging on a cushioned chair. The cat is sitting upright with its belly exposed, front paws resting on its belly, and hind legs splayed. Its expression appears relaxed and slightly aloof.

Figure 1: Obese Cat and Diabetes Risk – Obesity is a major risk factor for Type 2 diabetes in cats, leading to insulin resistance and high blood sugar levels. Maintaining a healthy weight is essential for diabetes prevention. Source: www.lodivet.com

Understanding the Two Types of Diabetes in Cats

Type 1 vs. Type 2 Diabetes in Cats

Diabetes mellitus in cats is categorized into two main types: Type 1 (insulin-dependent) and Type 2 (insulin-resistant) diabetes. While both forms affect how a cat’s body regulates blood sugar, they differ in causes, treatment, and progression. Understanding the difference is crucial for cat owners in Orange County seeking the best care for their pets.

Type 1 Diabetes in Cats (Insulin-Deficient Diabetes)

Type 1 diabetes occurs when the pancreas fails to produce enough insulin, the hormone responsible for regulating blood sugar levels. This is caused by damage to the insulin-producing beta cells in the pancreas, often due to an autoimmune response or genetic predisposition.

Key Characteristics of Type 1 Diabetes:

  • Rare in cats – Unlike dogs, cats rarely develop Type 1 diabetes.

  • Requires lifelong insulin therapy – Since the pancreas cannot produce insulin, affected cats need daily insulin injections to survive.

  • Difficult to prevent – Unlike Type 2 diabetes, Type 1 is not linked to diet or obesity and is primarily caused by genetic or immune-related factors.

Type 2 Diabetes in Cats (Insulin-Resistant Diabetes)

Type 2 diabetes is the most common form of diabetes in cats, accounting for over 90% of feline diabetes cases. In this condition, the pancreas still produces insulin, but the body’s cells become resistant to its effects, leading to chronically high blood sugar levels.

Key Characteristics of Type 2 Diabetes:

  • Linked to obesity and diet – Overweight cats and those fed high-carbohydrate dry food diets are at the highest risk.

  • Can lead to insulin dependence – If untreated, Type 2 diabetes can progress to a state where insulin injections become necessary.

  • Potential for remission – With weight loss, dietary changes, and early insulin therapy, some cats can go into diabetes remission, meaning they no longer need insulin.

Infographic explaining diabetes in cats. Top: Type I diabetes, due to insulin shortage, with a syringe image. Middle: Description of diabetes with a cat icon. Bottom: Type II diabetes, related to insulin resistance, featuring a cat image.

Figure 2: Types of Diabetes in Cats – This infographic illustrates Type 1 diabetes, caused by insulin deficiency requiring lifelong injections, and Type 2 diabetes, linked to obesity and insulin resistance. Early diagnosis and weight management can help prevent and manage feline diabetes. Source: www.petcare.com.au

What Are the First Signs of Diabetes in Cats?

Recognizing Early Symptoms of Diabetes in Cats

The early signs of diabetes in cats can be subtle and easily missed, especially in multi-pet households where changes in behavior may go unnoticed. However, identifying these early warning signs is crucial for preventing complications.

Common First Symptoms of Diabetes in Cats:

  • Increased Thirst (Polydipsia) – You may notice your cat drinking significantly more water than usual.

  • Frequent Urination (Polyuria) – An increase in litter box visits or urination outside the box can be an early clue.

  • Increased Hunger (Polyphagia) – Cats with diabetes often feel constantly hungry due to the body’s inability to use glucose properly.

  • Unexplained Weight Loss – Despite eating more, diabetic cats lose muscle mass and fat, which can be alarming.

Orange County pet owners should be particularly observant during the warmer months, as increased water consumption may be mistaken for normal behavior due to heat. If you notice any of these symptoms, schedule a diabetes screening at Bliss Animal Hospital immediately.

What Are the Symptoms of Diabetes in Cats?

Advanced Signs of Diabetes in Cats

As diabetes in cats progresses, symptoms become more severe and noticeable. If left untreated, it can lead to diabetic ketoacidosis (DKA), a dangerous metabolic state requiring emergency veterinary care.

Later-Stage Symptoms Include:

  • Weakness in the Back Legs – Difficulty jumping or walking normally due to diabetic neuropathy.

  • Lethargy & Fatigue – A once-active cat may become withdrawn and uninterested in play.

  • Vomiting & Dehydration – Advanced cases of sugar diabetes in cats can cause nausea and vomiting.

  • Cloudy Eyes or Vision Issues – Persistent high blood sugar levels can damage the eyes.

Diabetic ketoacidosis in cats causes severe dehydration, rapid breathing, and confusion. If your cat exhibits these signs, seek immediate veterinary care.

Infographic titled "Feline Diabetes" with eight illustrated symptoms: polyuria (frequent urination), weight loss, polydipsia (excessive thirst), weakness, decreased appetite, fatigue, dehydration, and vomiting. Central silhouette of a cat.

Figure 3: Common Symptoms of Diabetes in Cats – This infographic highlights the key signs of diabetes mellitus in cats, including polyuria (frequent urination), polydipsia (excessive thirst), weight loss, weakness, decreased appetite, fatigue, dehydration, and vomiting. Recognizing these symptoms early is essential for timely diagnosis and treatment. If your cat exhibits any of these signs, consult a veterinarian immediately. Source: https://www.eacourier.com

How to Treat Diabetes in Cats?

Managing Feline Diabetes

With proper treatment and lifestyle changes, diabetic cats can live long and healthy lives. The main goal of treatment is to stabilize blood sugar levels and prevent complications.

Treatment Options:

  • Insulin Therapy – Most cats require daily insulin injections. The two most common types are glargine (Lantus) and protamine zinc insulin (PZI).

  • Dietary Management – A low-carb, high-protein diet helps regulate blood sugar levels. Wet food is preferred over dry kibble.

  • Home Glucose Monitoring – Using a pet-friendly glucometer can help monitor your cat’s blood sugar.

  • Weight Management & Exercise – Helping your cat maintain a healthy weight reduces insulin resistance.

At Bliss Animal Hospital, we offer personalized diabetes management plans for Orange County pet owners.

New Oral Medications

Recently, the FDA approved two oral medications for feline diabetes: Bexacat (bexagliflozin tablets) and Senvelgo (velagliflozin oral solution). These medications belong to a class called sodium-glucose cotransporter 2 (SGLT2) inhibitors, which lower blood glucose by increasing its excretion through the kidneys. Unlike insulin injections, these are administered orally once daily.

Important Considerations:

  • Not for All Cats: These medications are intended for otherwise healthy cats with diabetes mellitus not previously treated with insulin. They are not suitable for cats with insulin-dependent diabetes or those currently on insulin therapy.

  • Potential Side Effects: Common side effects include vomiting, diarrhea, decreased appetite, and lethargy. Serious adverse reactions, such as diabetic ketoacidosis and pancreatitis, can occur and may be life-threatening. Close monitoring by a veterinarian is essential.

Given the specific criteria and potential risks associated with these medications, a thorough evaluation by your veterinarian is necessary to determine if they are appropriate for your cat. At Bliss Animal Hospital, we stay abreast of the latest treatments to provide the best care for your feline companions.

For more detailed information, please refer to the FDA’s article: Two New Drugs to Treat Diabetes in Cats—Is One Right for Your Cat?

Can Diabetes Be Reversed in Cats?

Diabetes in Cats Prognosis

Some cats achieve diabetes remission with early intervention, especially within the first 3-6 months of treatment.

Factors That Improve Remission Rates:

  • Early Diagnosis & Insulin Therapy

  • Strict Low-Carb Diet

  • Weight Loss & Increased Physical Activity

While not all cats achieve remission, proper management significantly improves their quality of life.

How to Prevent Diabetes in Cats?

Preventative Measures for Cat Owners

Prevention is easier than treatment. Here’s how you can reduce the risk of diabetes in cats:

  • Feed a low-carb, high-protein diet

  • Encourage daily exercise and play

  • Maintain regular vet check-ups

  • Avoid unnecessary steroid treatments

By implementing these measures, Orange County cat owners can help their pets live longer, healthier lives.

Final Thoughts on Diabetes in Cats

Early detection and proper treatment of diabetes in cats can prevent serious complications. If you notice any symptoms, seek veterinary care immediately.

If you believe your cat may have diabetes, call Bliss Animal Hospital at (949) 354-5201 to schedule an appointment today!

About Bliss Animal Hospital

Our team, led by Dr. Nayara Pataro and Dr. Sam Amirshahi, is dedicated to providing compassionate, top-rated care right here in South Orange County. With a strong emphasis on relationships and personalized veterinary care, we’re here to support you and your pet’s health and happiness. If you’re looking for convenient, high-quality care nearby, check out our veterinarian services in Lake Forest, CA and surrounding areas like Veterinarian near Mission Viejo, CA, Irvine, CA Veterinarian (Great Park and Portola Springs) and vet near Rancho Santa Margarita, CA.

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