Expert advice on teens and protein supplements
Nutritional specialists emphasize that while protein supplements can aid in muscle development, particularly in active adolescents, they are not a substitute for a balanced diet rich in natural protein sources. Generally, protein supplements are not recommended for teenagers who are already receiving sufficient protein through their regular meals and snacks. Excessive protein intake from supplements can lead to dehydration and increase the burden on the kidneys. The use of protein supplements might be considered for specific groups of teens, such as those on vegetarian or vegan diets.
Source
Yager, Z., McLean, S. Muscle building supplement use in Australian adolescent boys: relationships with body image, weight lifting, and sports engagement. BMC Pediatr 20, 89 (2020). https://doi.org/10.1186/s12887-020-1993-6
Additional Reading
https://www.michiganmedicine.org/health-lab/should-teens-use-protein-supplements
https://health.clevelandclinic.org/diets-and-supplements-can-be-dangerous-for-teens