Non-communicable diseases such as cardiovascular disease, cancer, diabetes and chronic respiratory illness are the world's leading causes of death. Four modifiable risk factors are largely responsible for these diseases: tobacco use, unhealthy diet, lack of physical activity and harmful use of alcohol. Adolescence is a pivotal period for the development of non-communicable diseases, the prevention of which can have a triple benefit for today's teenagers, for their future adult lives and for the next generation. Non-communicable diseases can be prevented and treated by maintaining a healthy lifestyle and undergoing regular screening.