The study reveals that achieving both environmental sustainability and nutrient adequacy in the diets of children and adolescents is challenging, as diets richer in nutrients tend to have a greater ecological footprint. While there is some evidence of recent improvements in diet-related environmental indicators, substantial capacity for change remains. The article calls for targeted interventions and population-specific dietary guidelines that consider both health and environmental impacts, particularly for vulnerable youth populations. More comprehensive research is needed to develop sustainable dietary strategies that do not compromise essential nutrition for growing children and adolescents.