Health Literacy
Nutrition for children and teens
Kids aren't small adults nutritionally — growth itself creates demands that don't exist once growth has finished.
Why growth changes the math
Children and teens are building new tissue, not just maintaining existing tissue, which raises requirements for protein, calcium, iron, and calories relative to body size — particularly during growth spurts. Needs also shift noticeably at puberty, with the increase generally larger and later for boys than girls due to differing growth timelines.[1]
Nutrients commonly falling short
| Nutrient | Why gaps are common |
|---|---|
| Calcium | Peak bone mass is built by the end of adolescence; low intake here has lifelong effects |
| Iron | Growth demand plus, after menarche, menstrual losses in girls |
| Fiber | Diets skew toward refined, low-fiber packaged foods |
| Vitamin D | Same risk factors as adults — limited sun exposure, few dietary sources |
What actually helps, practically
- Regular meals and snacks — smaller stomach capacity relative to needs means kids often need to eat more frequently than adults to meet requirements
- Modeling, not lecturing — children's food preferences form substantially through repeated exposure and watching what adults around them eat
- Limiting sugary drinks specifically — one of the highest-leverage single changes, given how much added sugar in kids' diets comes from beverages
Growth charts, not adult BMI categories
Pediatric growth is tracked against age- and sex-specific percentile charts, not adult BMI cutoffs, because normal, healthy growth trajectories vary considerably by age and stage of development.
Frequently asked questions
Do children need more protein relative to their size than adults?
Yes, relative to body weight, because they're actively building new tissue rather than just maintaining it. Requirements also rise further during growth spurts and puberty.
Why is calcium intake so important in childhood and adolescence?
Peak bone mass is built by the end of adolescence, and low calcium intake during these years can have effects on bone density that persist for life.
What's the single highest-leverage dietary change for kids?
Limiting sugary drinks specifically, since they contribute a disproportionate share of added sugar in children's diets and are one of the more straightforward things to change.
Keep reading: Calcium and bone health · Added vs. natural sugar · Iron deficiency