See also To support healthy growth and development in children, a balanced diet rich in essential nutrients is crucial. Here's a list of nutritious foods that can aid in weight gain for babies and young children:For 7-month-old babies:* Breast milk or formula as the primary source of nutrition* Pureed meats like chicken, turkey, and beef* Mashed fish with omega-3 fatty acids for brain development* Avocado for healthy fats and fiber* Sweet potatoes and other fruits and vegetables for essential vitamins and mineralsFor 5-year-old children:* Whole grain bread and pasta for complex carbohydrates* Lean protein sources like chicken, turkey, and fish* Nuts and seeds like almonds, sunflower seeds, and pumpkin seeds* Fresh fruits like apples, bananas, and berries* Healthy fats like olive oil and avocadoFor 10-year-old children:* A variety of whole grains like brown rice, quinoa, and whole wheat bread* Lean protein sources like chicken, turkey, fish, and legumes* Nuts and seeds like almonds, sunflower seeds, and pumpkin seeds* Fresh fruits like apples, bananas, and berries* Healthy fats like olive oil