Unhealthy Cats 2026: Here are the 10 breeds of adorable cat that have the most health issues

It’s a sad fact that certain breeds of cats have health issues baked into their DNA.

Humans are thought to have kept cats as pets for over 10,000 years, with the first domesticated felines evolving from African wildcats.

Since then they have become the world’s second most popular pet, just behind dogs when it comes to the animals we most like to welcome in to our homes and our hearts.

In the UK alone there are more than 10 million feline friends in households.

And there are a huge range of types of cat to choose from - according to The International Cat Association there are 73 ‘standardised breeds’, along with a bewildering number of crosses.

Unfortunately some cat breeds are either born with pre-existing medical conditions, often due to selective breeding, or are predisposed to certain health issues.

Here are the 10 most unhealthy breeds of cat.

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9. Siamese

If you're looking for a cat breed that will never leave you bored, the Siamese cat is the one for you. Be aware though, the Siamese cat has been known to be prone to sight issues and, occasionally, asthma. | AFP via Getty Images