The diet is based on the premise that grapefruit has an enzyme that burns fat, says Andrea N. Giancoli, a spokesperson for the American Dietetic Association, but that enzyme has never been pinpointed.

美国饮食协会的发言人Andrea n . Giancoli说，这种饮食是以葡萄柚含有能燃烧脂肪的酶为前提的，但这种酶从未被准确地找出。

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Soybean oil treatment increased digestible crude fat intake, and decreased digestible non-fiber carbohydrate intake and fecal N output.

补充大豆油使可消化粗脂肪的摄取提高，而减少可消化非纤维碳水化合物，另外粪氮排出量降低。

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Its reduced-fat Light 'n Fit yogurts were getting squeezed by rivals offering slimmer fare.

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