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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  It's taken me a few months to put this all into words but Bliss Animal Hospital provided our family with unmatched compassion during the most difficult time with our senior dog. The entire staff was patient, transparent, and supportive throughout the whole process. Unfortunately, our Zoey left quicker than expected and we rushed into their offices, no shoes no nothing, just our pup in a blanket, knowing it was her time to go. They accommodated up immediately, took such great gentle care of her (and of us) and really held our hands through the whole unexpected process. Dr. Nay is amazing, such a kind soul and it's no wonder she works with animals, she just understands them and their owners so well. Dr. Sam even remembered us from a pet we brought in over 8 years ago. Kianna & Mandy are amazing, you can tell they really love what they do because they're so good at it. They don’t just practice medicine—they treat you like family. We cannot recommend the Bliss Animal Hospital team enough.

      
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 Verified Came in for the first time today with my cat that's been dealing with over-grooming and skin issues. The office took their time to review my cat's records at his previous vet before today's visit. They took note that Miko hates going to the vet and was aggressive the last time I took him in. Knowing this, they really took the time to make sure he felt okay enough to be examined and get his blood drawn. They even let me stay in the room with him since they saw that he's calmer with me being there. I really appreciated this because I've never been allowed to stay with my cats during a blood drawing procedure or any procedure at that. My Miko is very strong and tried to fight the blood draw process but they were able to get it done successfully after multiple attempts. It was important to me to get his blood drawn because he's already 9 years old and I wanted to make sure everything was okay. The Dr was able to diagnose the skin issues as behavioral and will contact me soon with prescription/treatment recommendations as soon as the lab results come back! I really want to thank the Dr and staff for making us feel seen and heard. Empathy and compassion go a long way and we truly felt it today. Miko and I really appreciate the care you put into his visit. Looking forward to seeing his skin issues improve with your help and guidance.
  
 
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 Verified We went to Bliss for the first time a couple of days ago. It was for a check up for our yellow lab Gracie. We found the staff to be excellent in every way. They were attentive and very caring. Gracie gets nervous going to the vet but not so here. The vet and staff took the time to make her feel comfortable. By the end of the visit she was licking their faces. The vet answered all our questions and was very patient. After our visit she sent us a detailed email letting us know what was needed to improve her diet. This was exceptional care. We will be back for sure
  
 
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 Verified I can't recommend Bliss Animal Hospital enough, especially Dr. Nayara and the incredible team. My sphynx cat, Dobby, developed an anal gland abscess, and before goiing to Bliss, I took him to two other veterinary hospitals. Both recommended surgery under anesthesia. The problem is that Dobby has a heart condition and von Willebrand disease, so his specialists do not recommend anesthesia unless it is absolutely necessary because of the risks involved. At the other hospitals, I felt completely hopeless. I was essentially being told that if he had surgery there were significant risks because of his medical conditions, but if he didn't have surgery there were also risks if the abscess worsened or ruptured. Basically they said that this will not resolve on its own without surgical intervention and being put under anesthesia. As his mom, I felt like there was no good option and I was terrified of making the wrong decision. When I brought Dobby to Bliss Animal Hospital, everything changed. Dr. Nay took the time to carefully evaluate him instead of immediately recommending surgery. She was able to express more of the abscess, gave him a long-acting antibiotic injection, and even contacted Dobby's cardiologist to make sure the pain medication she wanted to prescribe would be safe for his heart. That level of thoroughness and teamwork meant everything to me. Because Dobby was having leakage from the abscess, he developed a severe skin burn around his rear end that looked incredibly painful. Dr. Nay recommended medical-grade Manuka honey, and it honestly worked like magic. The area healed so quickly, and it brought him so much relief. The results were incredible. The swelling continued to go down, the abscess completely resolved, and Dobby healed without needing surgery. I am beyond grateful that Dr. Nay looked at Dobby as an individual instead of taking a one-size-fits-all approach. I also want to give a special thank you to Wilma. She was so kind and compassionate with Dobby and treated him with so much love. When I needed medication for him right away, she went out of her way to help me get it as quickly as possible. That level of kindness is something I'll never forget. I'm a total mama bear when it comes to my boys, and I know I ask a million questions because I want the very best for them. Not once did anyone at Bliss Animal Hospital make me feel like I was being difficult. Every single person was patient, understanding, and genuinely cared about Dobby as if he were their own. Thank you, Dr. Nay, Wilma, and the entire team at Bliss Animal Hospital. You didn't just treat Dobby, you treated him with extraordinary compassion, respected his unique medical needs, and gave me hope when I truly felt like there wasn't any. I will always be grateful for the care you gave my sweet boy.
  
 
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 Verified The staff and Dr. Sam were absolutely amazing.  I booked the wrong place for an appointment and showed up at their office an hour before they even open and Dr. Sam took Dozer and I in and helped us anyway.  The staff was incredibly helpful with getting Dozers prior vet information.   And helped us when Dozer wasn't feeling well they immediately had us come in and took a look at him and referred us to a great emergency vet.  Unfortunately Dozer didn't make it, his cancer and bleed was to much, and even with as sad and heartbreaking it all is and was, the staff at Bliss were so helpful and supportive.  I recommend anyone who has a dog or cat to take them to Bliss, you will feel very supported and well taken care of.
  
 
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 Verified I love the honest, family feeling I received. Which is why you're Moe's new veterinarian!!!