Noncommunicable Diseases (NCDs), also known as chronic diseases, tend to be of long duration and are the result of a combination of genetic, physiological, environmental and behavioural factors. NCDs, including heart disease, stroke, cancer, diabetes and chronic lung disease, are collectively responsible for 74% of all deaths worldwide and more than three-quarters of all NCD deaths are in low- and middle-income countries. Learn more about non-communicable diseases from the courses.