Milk Intake, Sun Exposure, and Caffeinated Energy Drink Consumption in Children and Adolescents: Evidence, Uncertainty, and Implications for Peak Bone Mass Accrual.

BACKGROUND/

OBJECTIVES

Childhood and adolescence are critical periods for bone mineral accrual and future skeletal reserve. Milk intake, sun exposure and caffeinated energy drink consumption are familiar lifestyle concepts, but they differ substantially in biological proximity and evidential strength. This structured narrative review critically evaluates these exposures in relation to peak bone mass accrual in youth.

METHODS

PubMed/MEDLINE, Scopus, Web of Science, the Cochrane Library and Google Scholar were searched from database inception to 23 June 2026. Search terms combined pediatric population terms with bone outcomes and exposure terms related to milk/dairy, calcium, vitamin D, sun exposure, physical activity, sleep, caffeine and energy drinks. A literature collection flowchart and a GRADE-informed evidence appraisal table are provided to improve transparency and clinical interpretability.

RESULTS

Evidence is strongest for adequate calcium intake, calcium-rich foods and weight-bearing physical activity as modifiable contributors to skeletal accrual. Vitamin D is essential for mineral homeostasis, but supplementation effects on bone density in otherwise healthy children are context-dependent and appear most relevant for deficiency prevention or treatment. Milk intake is best interpreted as a practical marker of calcium-rich dietary patterns rather than as the only route to calcium adequacy. Sun exposure is an indirect determinant of vitamin D status and is modified by season, latitude, skin pigmentation, clothing, sunscreen, adiposity and outdoor behavior. Direct evidence linking caffeinated energy drinks to impaired pediatric bone accrual is very limited. The relevance of caffeinated energy drink intake is better framed as indirect and hypothesis-generating, through possible displacement of calcium-rich beverages, sleep disruption and clustering with poorer lifestyle patterns.

CONCLUSIONS

A prevention framework for pediatric bone health should emphasize calcium adequacy, avoidance of vitamin D deficiency, mechanical loading and correct pediatric DXA interpretation using Z-scores. Energy drinks can be included as a lifestyle concern, but conclusions should remain cautious because direct skeletal evidence is limited.