Hu Frank B
Department of Nutrition, Harvard School of Public Health, Boston, MA 02115, USA.
Am J Clin Nutr. 2003 Sep;78(3 Suppl):544S-551S. doi: 10.1093/ajcn/78.3.544S.
Evidence from prospective cohort studies indicates that a high consumption of plant-based foods such as fruit and vegetables, nuts, and whole grains is associated with a significantly lower risk of coronary artery disease and stroke. The protective effects of these foods are probably mediated through multiple beneficial nutrients contained in these foods, including mono- and polyunsaturated fatty acids, n-3 fatty acids, antioxidant vitamins, minerals, phytochemicals, fiber, and plant protein. In dietary practice, healthy plant-based diets do not necessarily have to be low in fat. Instead, these diets should include unsaturated fats as the predominant form of dietary fat (eg, fats from natural liquid vegetable oils and nuts), whole grains as the main form of carbohydrate, an abundance of fruit and vegetables, and adequate n-3 fatty acids. Such diets, which also have many other health benefits, deserve more emphasis in dietary recommendations to prevent chronic diseases.
前瞻性队列研究的证据表明,大量食用水果、蔬菜、坚果和全谷物等植物性食物与冠状动脉疾病和中风风险显著降低相关。这些食物的保护作用可能是通过其中所含的多种有益营养素介导的,包括单不饱和脂肪酸和多不饱和脂肪酸、n-3脂肪酸、抗氧化维生素、矿物质、植物化学物质、纤维和植物蛋白。在饮食实践中,健康的植物性饮食不一定必须是低脂的。相反,这些饮食应包括以不饱和脂肪作为膳食脂肪的主要形式(例如天然液态植物油和坚果中的脂肪)、以全谷物作为碳水化合物的主要形式、大量的水果和蔬菜以及充足的n-3脂肪酸。这种饮食还有许多其他健康益处,在预防慢性病的饮食建议中值得更多强调。