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My older cat eats a lot but is still skinny. Why is he underweight?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 13 years and 11 months old | 4 lbs

One of my cats is Fred. He is a male. We feed him 4 times a day, but he's still "fur, skin and bones". Why is he so underweight??

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on December 10th, 2016

Since Fred is an older kitty it is likely he is suffering from an overactive thyroid. Kidney disease and diabetes can also cause this. I suggest you take him to your vet for an exam and a blood test. Hyperthyroidism is easily treated with thyreostatic medicine and is likely the most common cause for the weight loss.

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