Starting primary school changes almost everything about a child's day: earlier mornings, recess instead of snack time at home, longer days and, later on, CCAs and homework. Nutrition for primary school children changes too. Here's how kids' nutrition needs shift by age, according to Singapore's recommended amounts, what each stage looks like in practice, and how to keep up on school days.
A different day, a different routine
At home or in preschool, meals and snacks usually follow a routine an adult sets. At primary school, children buy and choose food at recess, eat on a timetable and spend more of the day away from home. By secondary school, days are longer again. That makes the meals you do control, breakfast and dinner, more important.
Kids' nutrition by age: what changes on paper
Singapore's Health Promotion Board (HPB) sets Recommended Dietary Allowances by age. Calcium is a clear example of how needs rise through the school years:
| Age | Calcium per day | Vitamin D per day |
|---|---|---|
| 1–3 years | 500mg | 10mcg |
| 4–6 years | 600mg | 10mcg |
| 7–9 years | 700mg | 2.5mcg |
| 10–18 years | 1,000mg | 2.5mcg |
Source: Health Promotion Board, Recommended Dietary Allowances (HealthHub). HPB's vitamin D figures are set for Singapore's tropical climate.
In other words, HPB's recommended calcium amount for a teenager is double a toddler's, while their eating becomes less supervised.
Preschooler nutrition (ages 1–6): building habits at home
The preschool years are when food habits form. Offer new foods more than once, eat together as a family when you can, and keep milk, yoghurt, eggs, tofu and vegetables in regular rotation. Routines are easier to set now, while an adult plans most meals.

Nutrition for primary school children (ages 7–12): eating away from home
This is the stage when children start making their own food choices at recess. Breakfast matters more, because the school day starts early and recess can be hours away. Talk with your child about balanced canteen choices, and pack water and a simple snack for after-school activities.
Secondary school (ages 13–18): longer days, more independence
Teenagers need 1,000mg of calcium a day, the most of any stage of childhood, just as they start skipping breakfast, eating out with friends and staying up later with homework. Keep calcium-rich snacks such as yoghurt, cheese and high-calcium soy milk easy to grab, and keep family dinners as a regular anchor where you can.
Keeping nutrition on track on school days
Good nutrition for primary school children starts with the meals you control. These habits help on busy school days:
- Protect breakfast. Early starts make it easy to skip. Something simple, such as wholegrain bread with egg, or cereal with milk, is a good start.
- Use My Healthy Plate at dinner. HPB's My Healthy Plate guide suggests filling half the plate with fruit and vegetables, a quarter with wholegrains and a quarter with protein.
- Pack calcium-friendly snacks. Yoghurt, cheese or calcium-fortified soy milk travel well for after-school activities.
- Talk about recess choices. Help your child pick balanced options at the canteen rather than deciding for them every day.
- Keep water handy. A water bottle in the school bag is an easy habit.
A sample school-day menu
| Meal | Idea |
|---|---|
| Breakfast | Wholegrain toast with egg, and a glass of milk |
| Recess | A balanced canteen choice, such as rice or noodles with vegetables and protein |
| After school | Yoghurt or a cheese sandwich, and water |
| Dinner | My Healthy Plate: rice, tau kwa or fish, and kai lan |
Why Heilebär makes separate formulas for 1–6 and 6–18
Because a preschooler and a school-age child are at such different stages, Heilebär doesn't make one recipe and change the dose. Each product comes in two separately developed formulas. For example, Liquid Calcium 1–6 contains 300mg calcium citrate and 200mg L-lysine, an essential amino acid, per sachet, with vitamins D3 and K2, while Liquid Calcium 6–18 contains 350mg calcium citrate and 300mg L-lysine, plus CPP, CBP and cartilage peptide. The 6–18 calcium contains milk and egg derivatives.
Choosing between the 1–6 and 6–18 formula
Choose by age. For children aged 1 to 6, choose the preschool formulas; from age 6, choose the school-age formulas, which go through to age 18. At age 6, either formula is suitable. If you're unsure which suits your child, ask your doctor.


