Noncommunicable diseases (NCDs) are a global problem, and the burden they place on individuals and health systems is high and increasing.1 While infectious diseases such as HIV/AIDS, malaria, and tuberculosis capture much of the world’s attention and resources, the four major NCDs— cardiovascular disease, most cancers, diabetes, and chronic respiratory diseases—will account for approximately 81 percent of deaths in Latin America and the Caribbean (LAC) by 2030 and 89 percent of all deaths in high-income countries.2 Over 200 million people are living with NCDs in LAC.3 While death and disability from NCDs continues to increase, this trend could be slowed by paying more attention to four key risk behaviors. NCDs affect large numbers of people under the age of 60 and exact a huge toll on health, the economy, and human potential. The prevalence of NCDs is related to unhealthy behaviors and practices typically initiated in adolescence. Given that one in four people in LAC is between the ages of 10 and 24, these unhealthy behaviors among young people will have a direct effect on their risk of developing NCDs later in life. Building a healthier future depends on effective interventions during this critical window of opportunity. The four main NCDs are driven by four modifiable risk behaviors: tobacco use, excessive use of alcohol, unhealthy diet, and insufficient physical activity.4 These behaviors can lead to overweight and obesity, high blood pressure, and high cholesterol—all directly related to NCDs. (The World Health Organization defines adults as overweight when their body mass index (BMI) is greater than or equal to 25 and obesity as a BMI greater than or equal to 30.)