膳食脂肪对血胆固醇水平的影响周俊梅膳食脂肪根据其脂肪酸碳链的饱和度分为饱和、单不饱和及多不饱和脂肪三种类型，通常这三种类型的脂肪以不同的比例混合出现于食物中。脂类食物可以它所含主要脂肪酸的类型来归类，例如黄油含４５％饱和脂肪酸、２７％单不饱和脂肪酸以... Effect of Dietary Fat on Blood Cholesterol Levels ZHOU Junmei Dietary fat is divided into three types of saturated, monounsaturated and polyunsaturated fat according to the degree of saturation of its fatty acid carbon chain. Usually, these three types of fat are mixed in different proportions in food in. Lipids can be classified according to the type of major fatty acids they contain, for example, butter contains 45% saturated fatty acids, 27% monounsaturated fatty acids ...