Senior Cat2026-03-10Carelogy編集部
Managing Diabetes in Cats: Insulin, Diet & Blood Sugar Monitoring
Comprehensive guide to managing feline diabetes: insulin administration, dietary management, and home blood glucose monitoring.
Feline Diabetes Basics & Why Management Matters
Feline diabetes is a metabolic disease in which chronically elevated blood sugar results from insufficient insulin production or insulin resistance. About 80% of feline diabetes cases are type II, similar to type 2 diabetes in humans.
Risk Factors
- [Obesity](/en/columns/cat-obesity): The single biggest risk factor — overweight cats face 4x or higher risk
- Age: Particularly common in cats over 10
- Breed: Burmese cats have a higher predisposition
- Sex: Males are roughly twice as likely as females
- Long-term steroid use
- History of pancreatitis
Risks of Poor Management
- Diabetic ketoacidosis (DKA): A life-threatening complication with vomiting, dehydration, and altered consciousness
- Peripheral neuropathy: A plantigrade stance where the hind legs walk flat on the hocks
- Worsening [chronic kidney disease](/en/columns/cat-kidney-disease)
- Hepatic lipidosis (fatty liver disease)
With proper management, approximately 25-30% of diabetic cats achieve remission — a state where insulin is no longer needed. Early detection and treatment significantly improve remission rates.
Insulin Administration & Dietary Therapy
Insulin Administration Basics
Feline diabetes typically requires twice-daily subcutaneous insulin injections.
- Strictly follow your vet's prescribed insulin type and dose
- Inject at the same time as meals (ideally 12 hours apart)
- The injection site is the scruff between the shoulder blades; vary the spot slightly each time
- Store insulin in the refrigerator; warm it in your palm before use by gently rolling (never shake)
Tips for Home Injections
1. Inject while the cat is eating (distracted by food)
2. Tent the skin and insert the needle at the base
3. The needle is thin — most cats barely notice
4. Ask your vet for as many practice sessions as you need
Dietary Therapy
- High protein, low carbohydrate is the cornerstone — prevents blood sugar spikes
- Prescription diets: Hill's m/d, Royal Canin Diabetic, etc.
- Feed on a consistent schedule (to align insulin action with postprandial glucose)
- Limit treats to low-carbohydrate options
- Pursue strict weight management (reducing obesity improves insulin sensitivity)
For senior cats, every day matters
Subtle changes can signal serious issues in older cats. CatsMe tracks behavior, appetite, and health scores so you can act fast.
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Blood Glucose Monitoring & Daily Precautions
Blood Glucose Monitoring
Regular monitoring is essential for optimal glucose control.
- Blood glucose curve (BGC): At the clinic, glucose is measured every 2 hours over 12 hours
- Home glucose testing: A tiny blood sample from the ear margin, measured with a portable glucometer
- Fructosamine test: Reflects average blood glucose over the past 2-3 weeks
- FreeStyle Libre: A continuous glucose monitor worn by the cat for 14 days
Hypoglycemia — An Emergency
Hypoglycemia occurs when the insulin dose is too high and is life-threatening.
Symptoms: Trembling, staggering, seizures, collapse
Response: Apply a small amount of honey or corn syrup to the gums and contact your vet immediately
Daily Observation Points
- Changes in water intake and urine volume (polydipsia/polyuria signals poor glucose control)
- Weight changes (loss is concerning)
- Appetite changes
- Plantigrade hind-limb posture (sign of neuropathy)
- Vomiting and lethargy (possible DKA)
Working Toward Remission
Remission requires all three pillars: appropriate insulin therapy + dietary management + weight control. Even after remission, continue a high-protein, low-carbohydrate diet and schedule regular glucose checks.
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