简述膳食脂类的合理摄入原则。
我国营养学会建议:(答对一点给2分,三点均答对共5分)(1)膳食中脂肪提供的能量不应超过总能量的30%,以20%-25%为宜;(2)其中饱和脂肪酸、单不饱和脂肪酸和多不饱和脂肪酸的比例应为1:1:1;(3)必需脂肪酸亚油酸按提供能量计算达到总能量的1%-2%时,即可满足人体对必需脂肪酸的需要。
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