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My 10-pound senior cat developed diarrhea after eating wheat germ. Is this a gluten intolerance?

Cats · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Yes, wheat germ can trigger diarrhea in cats with gluten sensitivity. Plain cooked wheat is generally safe, but your senior cat may be one of the few who react to it. Watch for vomiting or loose stools, and call your own vet if symptoms persist or you notice any other changes.

Wheat — Food safety facts

Safe to share · Cats · full breakdown on the linked food page

Plain cooked wheat is safe, though some pets are sensitive to gluten.

Dogs and cats carry the same rating (Safe to share), so the notes below hold for either pet.

Wheat is not toxic to cats. The real limit is calories, fat and salt, so treat it as a small extra alongside the normal ration rather than a meal in itself.

There is no poisoning risk here, and the usual problem is simply eating too much at once: a heavy fat or salt load can bring on loose stools or a single vomit. Offer water, keep an eye on the pet for 24 hours, and do not induce vomiting.

The full verdict, portion guidance and serving notes are collected on the Wheat food facts page.

Open the full food page: Wheat food facts →