Yes he maybe losing weight because his caloric intake is lower, but how is the quality of the food affecting him? His internal organs(such as liver), mood, energy etc. How is his body responding to this food? Is he causing stress to his body? This is really biased and just follows the old paradigm of eating less. This doesn't go into at all how certain foods affect your body(eggs increase your metabolism, some foods are more satiating than others, etc.). This is just a starvation diet and it sounds like he's trying to reduce nutrition to simple black and white(only about calories) Which is bullshit, if I cut out meats and proteins and lived only on something like pasta. I will become miserable, maybe even depressed. My immune system will be comprised and I will probably become diabetic. Seriously what's next? The coke diet? 15 cans a day? It's less calories than my regular diet so I'll be healthy right?