When children start eating complementary foods, whether choosing traditional or modern methods, they still have to satisfy the criteria of having enough of the 4 essential nutrient groups in their diet: Protein, sugar, fat, vitamins and minerals. Therefore, fat is one of the 4 essential nutrients for children's development.

Breast milk is an invaluable source of nutrition for babies during the first 6 months of life. However, after this period, the amount of nutrients in breast milk will gradually decrease and the baby will switch to solid foods. In cases where the baby cannot fully tolerate the required meals, does not drink enough milk or is malnourished, the baby has a history of premature birth or congenital diseases...

Parents are advised to introduce solid foods to their babies when they are 6 months old. However, some babies may start solid foods earlier or later. Knowing your baby’s cues for solid foods can help you determine when your baby can start eating other foods in addition to breast milk.