In general, obesity can reduce your cat's quality of life and life expectancy; it's harder for it to play and move around, and surgical procedures or check-ups become more difficult.
Obese cats are much more at risk of diabetes – obese cats have this condition, which can require daily insulin injections. Sometimes, can be reversed once the extra weight is lost, as the accumulated fat which is responsible for a failure to regulate glucose is no longer present.
Your cat's immune system can become compromised when they're obese. they may also be more prone to urinary stones. stones can form in cats that tend to drink less water and urinate less often.
One serious and potentially fatal risk with obese cats is hepatic lipidosis. When the cat's body believes it is undernourished—for example, if a —fat is moved from stores into the liver to be used as energy. However, a cat's body is unable to manage that process effectively which leads to the liver functioning poorly, sometimes eventually leading to fatal hepatic insufficiency and liver failure. This can occur when an overweight or obese cat eating.
With extra weight, cats find it difficult to groom themselves, which can lead to skin problems. Similarly, extra weight puts pressure on your cat's joints, and they can suffer from arthritis. Cardiovascular and respiratory systems are also affected, leading to breathlessness and heart problems.
An overweight or obese cat can also end up struggling with their mental health; rather than running away or hiding when they sense danger, overweight cats aren't able to react quickly and so can't follow their instincts, which can cause them distress.
With the right diet, exercise, and behaviors, you'll be able to protect your cat from the risks of being overweight or obese. To start, speak to your vet who will be able to advise you on the best course of action.