Optimal Growth – Brain and Physical Growth

Why Early Childhood Is Critical for Brain and Physical Growth

Your child's brain reaches approximately 90% of its adult size by age 5, making the first six years a critical window for cognitive development.

Physical growth — bones, muscles, organs — and cognitive development — language, memory, problem-solving — happen simultaneously during these years, and both are nutrition-dependent. Supporting your child on both fronts early on helps set the foundation for long-term health, learning ability, and quality of life.

Supporting Your Child's Physical Development

Like adults, children need regular exercise to build a strong body. Most children need at least one hour of physical activity daily, which helps them build and maintain strong bones, muscles, and joints, maintain a healthy weight, reduce stress, and sleep better at night.

Walking, swimming, running, and playground play are all good ways to keep your child active while also building self-confidence. A strong physical foundation also depends on nutrition — adequate protein for muscle growth, calcium for bones, and vitamin D to help the body absorb calcium effectively.

Encouraging Mental and Cognitive Development

At this age, your child is curious and learning about the world — from the comforts of home to parks, playgrounds, and beyond. A few simple habits can encourage your child's development:

• Read to your child daily and nurture a love for books — this builds language skills, memory, and imagination.
• Encourage social play with other children to develop sharing, communication, and emotional skills.
• Speak in full sentences, and teach simple rhymes and songs to encourage speaking and word recognition.
• Praise your child's efforts to build confidence alongside these skills.

A well-nourished brain supports better focus, faster learning, and stronger cognitive connections during these formative years.

Key Nutrients for Brain and Body Growth

A few nutrients play an outsized role in supporting both brain and body development during early childhood:

• DHA is found abundantly in the brain and supports cognitive development, memory, and visual function — found in oily fish like salmon and mackerel.
• Protein is essential for muscle building, cell repair, and overall physical growth, especially during rapid growth phases. Learn more about protein's role.
• Calcium and vitamin D work together to support the development of strong bones and teeth throughout early childhood.
• Iron is a component of haemoglobin that distributes oxygen throughout the body and supports brain development — deficiency can impair concentration and learning. Learn more about iron's benefits.

Building a Nutritious Foundation for Your Child

A balanced diet of whole foods — including fruits, vegetables, whole grains, lean meats, fish, eggs, and dairy — provides the broadest nutritional coverage for brain and body. Encouraging a variety of foods from an early age helps build healthy eating habits and ensures a wide range of vitamins and minerals.

For children with limited diets or specific food refusals, a fortified milk containing DHA, protein, calcium, and iron can help supplement daily nutrition.

Regular physical activity combined with good nutrition creates the strongest foundation for your child's healthy development — both mental and physical.