He proved the hypothesis that calories are what matter most for weight loss and his labs improved also. Note, he has kept it off a year, and that's the more difficult part. He should be congratulated and he's 100% correct, there's no such thing as a "bad" food but foods that should be limited. While that's certainly not the route I'd recommend people go for losing weight, he did good by his students and those who think the "secret" to weight loss is via Magical Macro Manipulations (TM) pushed by "gurus."