新鲜水果和蔬菜里的营养成分一起发挥作用。公共卫生硕士,注册营养师Kristine Wallerius Cuthrell是夏威夷马诺大学以家庭为中心夏威夷食品的一名研究营养学家和高级项目协调者,他称,过去5到10年里,许多大型研究已经发现维生素营养补充品不能提供和食物一样的营养。2005年,卫生福利部和美国农业部共同建立并每五年进行审查的美国人饮食指南指出,食物是最好的营养来源,因为他们含有天然成分,如类胡萝卜素和黄酮类。
"In addition to the substances we are aware of, there are many present in fruits and vegetables that have yet to be discovered. Food and the nutrients they contain aren't consumed singly, but with each other. As such, they may act in synergistic ways to promote health," Cuthrell says. For instance, eating iron-rich plants, like spinach, and the vitamin C in orange juice, is great for people who don’t get enough iron (typically young women).
“除了我们知道的物质外,水果和蔬菜里面还含有许多没被发现的物质。食物和所含的养分并不是单独消耗掉,而且互相吸收。同样地,它们以互相协作的方式促进了健康。”Cuthrell说。例如,吃富含铁的植物,如菠菜和橙汁里所含的维生素C,对于缺铁的人来说是非常有用的(尤其是年轻女性)。
Fruits and vegetables may prevent many illnesses. Eating fruits and vegetables may reduce your risk of cardiovascular diseases, stroke, type 2 diabetes, and even some forms of cancer. The Nurses' Health Study and Health Professionals Follow-up Study examined nearly 110,000 people over the course of 14 years. Part of the study revealed that the more fruits and vegetables people ate daily, the less chance they would develop cardiovascular diseases.
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