By the time a baby reaches one year old, their weight has tripled and their height has increased one and a half times compared to birth. During this period, the baby's brain develops at its fastest rate. It is recommended to add complementary foods rich in high-quality protein, unsaturated fatty acids such as oleic acid and linoleic acid, and DHA to the baby's diet to promote better health and intelligence. High-quality protein is mainly found in animal meats such as pork, beef, chicken, and fish, with the highest content in fish like salmon and tuna, which helps make the baby stronger. Unsaturated fatty acids are mainly found in foods such as animal bone marrow, pine nuts, walnuts, and shrimp. They are essential fatty acids for the development of the baby's central nervous system and are beneficial for healthy growth. DHA and EPA, known as "brain gold," are mainly found in fish brains and are indispensable nutrients for the development of the baby's nerves and brain. Sufficient intake of brain gold can enhance the vitality of brain nerve cells and promote intellectual development. In the 1990s, Japan legislated the addition of brain-active substances like DHA to daily food and drinking water. Subsequent surveys showed that the average IQ of the Japanese population increased by 7% compared to the 1970s. We should also add these nutrients in a timely manner during the growth of infants and young children to ensure the healthy development of the next generation. To avoid the trouble of fish bones when feeding fish, you can choose industrially produced, all-natural complementary foods without artificial colors, flavors, or preservatives (such as deep-sea tuna puree and various Yier fish treasures). These products have fine and short fish fibers, a loose and soft structure, and a delicate texture, making them suitable for babies to absorb. Their formulas are scientific and reasonable, preserving the high-quality nutritional components of deep-sea fish to a greater extent than homemade foods.