Mental Health All three countries have identified depression as a serious mental health problem among youth. They have all reported concerns about eating disorders. While the three countries have different measures of mental health and illness, all three recognize that better data and measures are needed to address this issue. Cancer For all three countries, cancer is the second leading cause of death for children age 5 to 14. Children in Mexico are more likely to die from leukemia (and other types of cancer) than are children in Canada and the United States. It is critical to share knowledge and experience across the continent to benefit the.