Eating more yet losing weight in cats: what to do
Ravenous appetite plus weight loss is the classic senior-cat hyperthyroidism combination.
What are the common causes?
Home care & observation tips
- ✓Track weight and food intake
- ✓Test T4 at the vet
- ✓Dietary iodine control only with vet guidance
- ✓Log water intake and litter-clump changes
- ✓Move to low-carb wet food structure (with vet guidance)
- ✓Get a glucose curve + urinalysis
When must you see a vet?
- ⚠Eating more + losing weight after age 8
- ⚠Accompanied by vomiting or rapid breathing
- ⚠Increased drinking/urination + weight loss
- ⚠Walking on hocks (neuropathy sign)
FAQ
Is eating more yet losing weight in cats serious?
It depends on the combination of symptoms, how long it has lasted, and your pet's energy and appetite.Note that it can appear in problems that need prompt care, such as Hyperthyroidism, Feline diabetes. Enter the full symptom combination in our symptom checker for a more specific urgency assessment.
Can I monitor at home first? What should I watch?
If energy and appetite are normal with no other signs, 24-48 hours of monitoring is reasonable. Keep notes on frequency, duration, appetite, water intake, energy and what the stool/urine looks like — vets find this very useful.
What should I prepare before the clinic?
Note when the symptom started and how it changed; bring packaging or residue if ingestion is suspected; bring vaccination and deworming records; and if possible take a video (odd gait, cough sound) — clearer than describing.
Not sure how serious it is? Assess it with the symptom checker
Start symptom check →