Balanced nutrition, not just any nutrition, is crucial for your child's growth. Different nutrients work together and complement one another. Sometimes without one, the other may not be effective. When all the nutrients are present in the correct proportion and the right amount in your child's diet, they form balanced nutrition. So, a diet that might be rich in only a few nutrients is nutritious but cannot be called a 'balanced diet'. That is because not all the essential nutrients are present in it or they are not present in the right proportion or the required quantity. You might try and give your child nutritious food, but it may still not satisfy all his daily nutrient requirements.