一组肥胖少年采用自选的低卡路里餐，每天摄入的卡路里总量不超过1300至1500。

One group of teens ate self-selected low-calorie meals not exceeding 1,300 to 1,500 total calories per day.

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在四个月时，所有参加者体重都有所减轻，但是采用替代餐的少年降得更多，BMI(体重指数)降了超过6.3%，而低卡路里餐一组的BMI则降了3.8%。

At the four-month mark, all participants had lost weight, but the teens on meal replacements lost more - a 6.3% reduction in body mass index (BMI) versus 3.8% for the low-calorie group.

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葡萄柚餐的追随者吃半个葡萄柚或者一份有葡萄油汁的低卡路里，高蛋白的套餐。

Followers of the grapefruit diet eat half a grapefruit or a serving of grapefruit juice with every low-calorie, high-protein meal.

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