Optimal growth and development in childhood are essential for long-term health and well-being. However, there are a number of reasons why some children can have difficulties growing optimally. Inadequate growth may occur in children who have an underlying disease or condition such as cerebral palsy, a congenital heart disease, cystic fibrosis, liver disease or cancer1-2. This is often due to a poor intake during their illness or nutritional requirement being higher. In addition, it can occur when there is no disease-related cause, for example, with feeding difficulties3.