Creatine plays a crucial role in energy metabolism, which is essential throughout different stages of life. In adolescents, adequate creatine intake supports normal growth, muscle development, and overall maturation. Studies have shown that low dietary creatine intake in children and adolescents is associated with slower growth, less muscle mass, and higher body fat.

For older adults, creatine supplementation can counteract age-related declines in muscle mass and strength, known as sarcopenia. By enhancing muscle energy stores, creatine helps improve physical performance and may reduce the risk of falls and fractures. Furthermore, creatine's potential cognitive benefits could support brain health in aging populations. As always, individuals should consult healthcare providers before starting supplementation to ensure it aligns with their health status and needs.