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1992年,美国农业部制定了指导大众健康膳食的“USDA金字塔”,以金字塔底座大、顶尖小为比喻,根据食物营养与健康的关系,把日常食物分成“应该多吃”(金字塔底座),“适量多吃”(第二层)、“适量少吃”(第三层)和“少吃或不吃”(金字塔顶尖)四大类。“应该多吃”的食物包括大米、面包、谷物和面条;“适量多吃”的食物包括蔬菜和水果;“适量少吃”的食物包括鱼、家禽、蛋、干果、牛奶、奶酪和肉类;“少吃或不吃”的食物包括脂肪和糖类。因为大米、
In 1992, the USDA formulated the “USDA Pyramid” which guides the health of the general public. Using the large pyramid and the small top, the daily food is divided into “should eat” (pyramid base) according to the relationship between nutrition and health. “Eat too much” (second floor), “Eat less” (third floor) and “Eat or not eat” (pyramid top) four categories. Foods that “should eat” include rice, bread, cereals and noodles; “moderate food” includes vegetables and fruits; and “moderate food” includes fish, poultry, eggs, dried fruits, milk, cheese and meat ; “Eat less or not eat” foods include fats and sugars. Because rice,