Why Spayed Cats Need Sterilised Food
By Calibra | Published: 2026-10-19
Category: Tips & Care
After spaying, your cat's metabolism changes. Learn why sterilised food helps manage weight and supports urinary health.
Quick Answer
Spaying reduces your cat's energy needs by about 20-30%, making weight gain common. Sterilised food like Calibra Cat Life Sterilised Beef provides controlled calories and balanced minerals to support a healthy weight and urinary tract.
Why Metabolism Changes After Spaying
When a female cat is spayed, her ovaries are removed, which stops the production of estrogen. This hormonal shift lowers her resting metabolic rate, meaning she burns fewer calories at rest than before. At the same time, her appetite often increases. Without adjusting her diet, this combination can lead to rapid weight gain, which strains joints and increases the risk of diabetes.
Sterilised food is formulated specifically for this new metabolic state. It contains fewer calories per cup than regular adult cat food, while still providing enough protein and fiber to keep her feeling full. This helps prevent overeating without requiring severe portion restriction.
Urinary Health Considerations
Spayed cats are also more prone to urinary tract issues, partly due to changes in hormone levels that affect bladder function. A diet with controlled mineral levels, especially magnesium and phosphorus, can help reduce the risk of struvite crystals and urinary stones.
Calibra Cat Life Sterilised Beef includes balanced minerals to support urinary health, along with taurine for eye and heart function. Choosing a wheat-free recipe with high-quality protein like beef also supports lean muscle maintenance.
Frequently Asked Questions
- Can I just feed less of her regular food instead of switching to sterilised food?
- Reducing portions of regular food can work short-term, but it often leaves your cat hungry because the food isn't designed to be filling at lower volumes. Sterilised food has more fiber and protein per calorie, so she stays satisfied with fewer calories. Plus, regular food may have higher mineral levels that increase urinary risk over time.
- How soon after spaying should I switch to sterilised food?
- Start the transition about 2-3 days after surgery, once your cat is eating normally. Gradually mix the new sterilised food with her current food over 7-10 days to avoid digestive upset. The metabolic change happens quickly, so early adjustment helps prevent weight gain from the start. Begin the switch within a week of spaying for best results.
- Will sterilised food work for male cats after neutering?
- Yes. The same metabolic and urinary health principles apply to neutered males. Sterilised food is formulated for both spayed females and neutered males. Calibra Cat Life Sterilised Beef is labeled for cats that have been neutered or spayed, so it works for either sex.
- How long should my cat stay on sterilised food?
- Most cats benefit from staying on sterilised food for life after spaying or neutering. The metabolic change is permanent, so continuing the diet helps maintain a healthy weight long-term. If your cat becomes underweight or develops a health condition, consult your veterinarian about adjusting the diet. Plan for a lifelong diet unless your vet advises otherwise.
Product Spotlight
- Calibra Cat Life Sterilised Beef: A balanced and complete dry food designed for adult cats from the Cat Life Range, suitable for cats that have been neutered or spayed. This wheat-free recipe contains a high beef content, including fresh beef, alongside balanced calories and minerals to support your cat’s overall health. It provides the precise calorie and mineral profile your spayed cat needs to avoid weight gain and maintain urinary health, without sacrificing taste or nutrition.
Calibra Cat Life Sterilised Beef
