Want to keep your cat healthy and happy? This guide breaks down what to avoid in your cat’s diet using clear, friendly advice. From risky foods like raw meat to common mistakes like sudden food switches, you’ll learn five simple things to watch out for. We also cover surprising ingredients, like too much fish or the wrong kinds of treats. These tips are backed by research—but explained in everyday words. Moricat makes it easy for cat parents to learn how to feed their cats right without the stress. Good food choices help your cat feel better, look better, and stay playful longer. Start with small changes and avoid the most common food traps. This blog will help you feel more confident at mealtime—and your cat will thank you with purrs.
Feeding your cat sounds simple—but not all food is good food.
Even if your kitty seems to love it, some ingredients can cause more harm than good.
Let’s look at what to avoid to keep your cat feeling great and full of life.
The wrong food—even if it's sold in stores—can make your cat sick over time.
At Moricat, we believe cat parents deserve clear info, not confusion. Here’s how to keep your cat’s meals safe and healthy.
1. Skip too much raw fish or meat
Raw food can carry bacteria that hurt your cat’s gut and skin.
Some people think raw diets are “natural,” but studies show they can lead to digestive problems, dull coats, and behavior issues. Cooked food is safer and still tasty. It’s better to avoid raw unless a vet tells you it’s okay.
2. Avoid sudden food switches
Changing food too fast can upset your cat’s stomach.
If you switch your cat’s diet overnight, it may lead to diarrhea or a refusal to eat. New foods should be added slowly over a week—just a spoonful at a time. That helps your cat adjust with no stress.
3. Watch for too many treats
Treats should be small and not too often.
It’s easy to overfeed treats, but they can be full of things your cat doesn’t need. Too much salt, sugar, or filler can hurt digestion and cause weight gain. Treats are fine—just in tiny amounts and not every day.
4. Be careful with “trendy” foods
Some new ingredients, like seaweed or insect protein, are okay—but not all cats need them.
One study found seaweed and insects like mealworms could help with gut and coat health—but they should be added gently and not replace a full meal. Always talk to a vet first if trying anything new or unusual.
5. Don’t assume all “cat food” is good
Even store-bought cat food can have too much filler or not enough real meat.
Check the label. Look for real protein (like chicken or fish) as the first ingredient. Avoid foods where corn, soy, or grains come first—they’re cheaper but not better for your cat’s health.
Conclusion
You don’t need to do everything at once. Start small—maybe by cutting back on treats or slowly moving to a better brand of food.
Keep watching how your cat acts, plays, and uses the litter box. The best diet is the one that keeps them feeling good.
References:
Mohamad Yusof, L., Ahmad, H., Hassim, H. A., Mustaffa-Kamal, F., Omar, S., Zainundin, N. K., & Padam, B. S. (2024). A study on the impact of diet supplementation of fermented dried seaweed powder (Kappaphycus alvarezii) on healthy cat gut performance, skin and hair coat conditions, and behaviour. Veterinary Research Communications, 48(5), 3061. https://doi.org/10.1007/s11259-024-10479-w
Fusi, E., Rizzi, R., Polli, M., Cannas, S., Giardini, A., Bruni, N., & Marelli, S. P. (2019). Effects of Lactobacillus acidophilus D2/CSL (CECT 4529) supplementation on healthy cat performance. Veterinary Record Open, 6, e000368. https://doi.org/10.1136/vetreco-2019-000368
Lei, X. J., Yu, M., Zhao, Y. J., Bai, D. H., Sun, X. Z., Wang, L. N., & Zhuang, S. (2021). Effects of black soldier fly larvae on the fecal characteristics, skin and coat health markers of healthy adult cats. Journal of Animal Science. https://doi.org/10.1093/jas/skaf063
Written By: Hayley Cui
Design by: Shirley Chen