Cats, like humans, can experience health problems as they age, but the specific age at which health issues start to appear varies depending on factors like breed, genetics, lifestyle, and diet. In general:

1. Young Adult (1–3 years): Cats are typically in their prime during this period and are less likely to experience health problems. However, they may still have occasional issues, such as minor injuries or infections.
2. Mature Cats (4–7 years): This is considered the “middle age” for cats. Health problems can start to emerge, though they may not be serious. For example, some cats may start to develop weight problems, dental disease, or signs of mild arthritis.
3. Senior Cats (8–10 years): This is when many cats start to show more noticeable signs of aging, and health problems become more common. Conditions like arthritis, kidney disease, diabetes, hyperthyroidism, and dental issues may begin to develop. You might notice changes in behavior, such as reduced activity, weight changes, or changes in litter box habits.
4. Geriatric Cats (11+ years): As cats enter their senior years, health issues can become more frequent and severe. Common health problems include kidney failure, dental disease, heart disease, cancer, and cognitive dysfunction (similar to dementia in humans). Regular veterinary check-ups become even more important to detect and manage these issues early.

Early Detection is Key:

Regular veterinary check-ups are important at any age, but especially as cats get older, as many health problems can be managed or treated more effectively when caught early. Keep an eye out for signs of illness, such as changes in eating habits, weight loss or gain, lethargy, changes in coat quality, or behavioural changes.

By 7–10 years of age, annual check-ups or even semi-annual visits to the vet are recommended for senior cats.