Chronic diseases are long-term illnesses that do not get better on their own and often get worse over time. Chronic diseases can often be managed but are rarely cured completely. [1] Early identification can support good treatments that improve people’s health and quality of life. People living with a chronic disease often require medication and other supports from healthcare providers to achieve and maintain their health.
Cancer, cardiovascular disease (such as heart disease and stroke), diabetes, and respiratory diseases (such as chronic obstructive pulmonary disease (COPD) and asthma) are the most common chronic diseases in Canada.
Chronic diseases are the leading cause of disability and death in the world. [2] They are also expensive to treat. In Ontario, chronic diseases account for an estimated $10.5 billion in direct health care costs. [3] Preventing chronic disease and supporting those with chronic disease to stay well are key to reducing the burden on the healthcare system and promoting well-being for all.
![Chronic diseases are the leading cause of disability and death in the world. [2] They are also expensive to treat. In Ontario, chronic diseases account for an estimated $10.5 billion in direct health care costs. [3] Preventing chronic disease and supporting those with chronic disease to stay well are key to reducing the burden on the healthcare system and promoting well-being for all.](https://www.towardcommonground.ca/wp-content/uploads/2025/04/ChronicDisease.png)
Ontario Agency for Health Protection and Promotion (Public Health Ontario). (2024). Snapshots: Chronic disease incidence and prevalence snapshot [Data file]. Accessed December 13, 2024.