What is the primary concern in nutrition for a child experiencing failure to thrive?

The primary concern in nutrition for a child experiencing failure to thrive is caloric intake. Failure to thrive is characterized by a significant decrease in growth rate or an inability to maintain an adequate growth trajectory, often due to insufficient caloric intake relative to the child's energy expenditure requirements. Children who are not consuming enough calories may not only struggle to gain weight but could also face developmental delays and other health issues.

While dietary preferences, micronutrient supplementation, and food allergies are important considerations in a child's overall nutrition, they do not directly address the immediate issue of insufficient energy intake that leads to failure to thrive. Focusing on caloric intake ensures that the child receives the necessary energy to grow and develop properly, thus addressing the primary concern in situations of failure to thrive. This foundational aspect of nutrition is critical for ensuring a child's health and long-term growth outcomes.