Obesity is a common problem in cats. It results from too many calories being eaten and not enough calories being burned. Extra body fat causes increased inflammation in the body, worsening osteoarthritis and joint disease. To prevent your cat from becoming obese, speak to your veterinarian about your cat’s calorie needs and an appropriate food for your cat’s life stage. Increasing your cat’s daily activity can help prevent or reverse obesity. Be aware of your cat’s body condition and keep track of her weight.