American Shorthair Health Problems
American Shorthairs are one of the healthiest cat breeds, bred for centuries as working cats with good genetics.

American Shorthair Lifespan: What to Expect
American Shorthairs typically live 15-20 years, among the longest-lived breeds.
Average lifespan: 15-20 years
Genetic Factors
Excellent genetic diversity from working cat heritage. Few breed-specific issues.
Common Health Issues in American Shorthairs
Hypertrophic Cardiomyopathy (HCM)
Heart disease present in some lines, but less common than many breeds.
Symptoms to watch for:
- Rapid breathing
- Lethargy
- Fainting
Obesity
Prone to weight gain, especially indoor cats.
Symptoms to watch for:
- Excess weight
- Decreased activity
Dental Disease
Common in all cats, manageable with care.
Symptoms to watch for:
- Bad breath
- Difficulty eating
Kidney Disease
Common in senior cats of all breeds.
Symptoms to watch for:
- Increased thirst
- Weight loss
Common Causes of Death
Understanding what American Shorthairs typically face helps you watch for warning signs and make informed decisions about their care.
- Kidney disease (30%): Age-related in very senior cats.
- Cancer (25%): Various cancers.
- Heart disease (15%): HCM in some cats.
- Age-related decline (20%): These cats live very long.
Warning Signs to Watch For
- Weight gain
- Increased drinking
- Dental issues
- Breathing changes
- Behavior changes in seniors
Preventive Care
- Weight management
- Regular dental care
- Annual senior bloodwork
- Activity and enrichment
Sources
This information is compiled from veterinary research and breed-specific health studies:
- https://cfa.org/american-shorthair/
- https://icatcare.org/advice/american-shorthair/
American Shorthair Health FAQs
- What's the best diet for a American Shorthair?
- American Shorthairs do best on high-quality cat food appropriate for their life stage (puppy/kitten, adult, senior). Breed-specific health concerns may warrant specialized diets. Consult your vet rather than following general advice online.
- How often should I take my American Shorthair to the vet?
- Annual wellness exams for adult American Shorthairs, twice yearly for seniors (typically 7+ for cats). More frequent visits if your American Shorthair has known health conditions. Preventive care catches issues before they become emergencies.
- What vaccinations does my American Shorthair need?
- Core vaccines are essential for all American Shorthairs. Your vet will recommend additional vaccines based on your cat's lifestyle, location, and risk factors. Keep vaccination records current and follow the recommended schedule.
- How do I know if my American Shorthair is in pain?
- American Shorthairs often hide pain. Watch for: changes in appetite, reluctance to move, unusual posture, excessive licking of one area, withdrawal, aggression when touched, panting (in cats), or changes in sleep patterns. Any significant behavior change warrants a vet visit.
Keep their memory close
If you're facing a difficult time, these may bring comfort.