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
- How long do American Shorthairs live?
- American Shorthairs typically live 15-20 years. American Shorthairs typically live 15-20 years, among the longest-lived breeds.
- What are common health issues in American Shorthairs?
- The most significant health concerns for American Shorthairs include Hypertrophic Cardiomyopathy (HCM), Obesity, Dental Disease. Heart disease present in some lines, but less common than many breeds.
- Is 15–20 years a normal lifespan for a American Shorthair?
- American Shorthairs typically live 15-20 years, among the longest-lived breeds.