Chronic diseases are long-lasting conditions that usually can be controlled but not cured. People living with chronic illnesses often must manage daily symptoms that affect their quality of life, and experience acute health problems and complications that can shorten their life expectancy.
According to the Centers for Disease Control, chronic disease is the leading cause of death and disability in the United States, accounting for 70% of all deaths. Moreover, chronic conditions such as back pain and depression are often the main drivers of decreased productivity and increased healthcare costs.
Data from the World Health Organization show that chronic disease is the major cause of premature death around the world, even in places where infectious disease are rampant.