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. 2017 May 17;75(5):307–326. doi: 10.1093/nutrit/nux014

Table 4 .

Grading of the evidence and recommendations regarding weight control and metabolic syndrome

Evidence and recommendation Grade
Evidence
 There is no optimal diet for weight  loss, but calorie restriction plus exercise are  instrumental for losing weight66 B
Recommendation
 A healthy diet designed to achieve 5% weight loss  should be prescribed for overweight and obese  patients with metabolic syndrome66,67 A