Many people believe that high-protein foods mean high nutritional value, and businesses often use this as a key selling point. In fact, when evaluating the protein in food, it's not just about the quantity, but more importantly, the quality. Are high-protein foods necessarily more nutritious?
In high-quality proteins, the proportion of essential amino acids is well-balanced and closest to the human body's requirements, which is the key to evaluating their nutritional value. Some foods have a high protein content, but they lack certain essential amino acids or have an unbalanced amino acid ratio, making their protein nutritional value low.
In other words, the closer a protein is to the human body's requirements, the higher its nutritional value. Some foods, such as sea cucumbers, beef tendon, and pig skin, are high in protein but lack certain essential amino types or have an imbalanced ratio. Poor-quality proteins are only minimally utilized by the body to meet its tissue needs; some cannot be used to repair or build human tissue cells at all. The portion that the body cannot utilize can only be used for energy, and excess energy increases the risk of metabolic diseases like gout.