What are the most common cat diseases and how can I prevent them?
Quick answer
The conditions vets diagnose most often in cats are chronic kidney disease, hyperthyroidism, dental disease, obesity and diabetes, lower urinary tract disease (FLUTD), upper respiratory infections, and parasites such as fleas and worms.
The full answer
Feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV) also matter, because they weaken the immune system and shorten lifespan.
Prevention is mostly about routine. Vaccinate kittens and keep boosters current, especially for feline herpesvirus, calicivirus, panleukopenia, and — depending on lifestyle — FeLV and rabies. Use year-round flea, tick, and worm prevention. Brush your cat's teeth or use vet-approved dental chews, and book professional cleanings when recommended, since periodontal disease affects most cats over three years old. Keep your cat indoors, spay or neuter, and feed a measured diet to prevent obesity, which drives diabetes and arthritis. Good hydration protects the kidneys: many cats drink too little, so offer wet food, multiple water bowls, or a fountain.
Early detection changes outcomes. From about seven years old, ask about yearly blood work and a urine test, and from ten, consider checks every six months. Watch for the classic warning signs — weight loss despite a good appetite (hyperthyroidism), drinking and urinating more (kidney disease or diabetes), bad breath or drooling (dental disease), and straining in the litter box (FLUTD, urgent in males). Keeping records of your cat's weight and habits makes these changes far easier to spot. If symptoms persist or worsen, please consult your veterinarian promptly.