Common health issues in cats include dental disease, obesity, upper respiratory infections, and ear infections. It is important to keep your cat's teeth clean and healthy, as dental disease can lead to other health problems. Obesity can be prevented by providing a balanced diet and proper exercise for your cat. Regular visits to the vet can also help to detect any potential health issues early. Upper respiratory infections can be prevented by keeping your cat away from other cats that may be ill, and vaccinating your cat against common viruses. Ear infections can be prevented by cleaning your cat's ears regularly and checking for signs of infection. Treatment for common health issues in cats may involve antibiotics, anti-inflammatory medications, or other medications prescribed by a veterinarian.