1. Nutritional needs of a 1-year-old baby. At the 1-year-old stage, the baby\’s body is developing rapidly and needs to consume sufficient nutrients to support the development of the body. The nutrients your baby needs during this period include protein, fat, carbohydrates, vitamins and minerals. Among them, protein is an important substance that constitutes human tissues and cells, and can be ingested by eating milk, eggs, beans and other foods; fat