The 100 claims that dieters can lose up to 18 pounds in two weeks by counting only sugar calories. According to the book, sugar calories elevate insulin, the weight-gain hormone, and while certain foods are purportedly sugar-free, hidden sugars — including those found in yogurt, whole grains and fruits — are thwarting weight-loss efforts.
Although the author limits the carbohydrates in the book to only 100 sugar calories per day (calculated by multiplying the carbohydrate grams in food by four), he suggests that this is not a low-carb diet or a low-glycemic diet, but rather a diet that will increase metabolism, speed up weight loss, improve health and keep weight off.
The book provides simple meal plans that, if followed, will likely result in weight loss. Although it’s suggested that weight loss results from a reduction in sugar calories, the four-week plan is a relatively low-calorie diet too. However, the diet is low in most of the nutrients that help fight chronic disease.
The 100 is a new spin on a low-carb diet that, if followed exactly, will likely result in weight loss because it is calorie restrictive. But the diet plan lacks variety, making it another diet that people can follow, but likely will find difficult to sustain for life.