It's too hard to see what this means from the information in the article. What was the protein and carb content? Was it a low-protein diet or low-carb (I'm gu

It's too hard to see what this means from the information in the article. What was the protein and carb content? Was it a low-protein diet or low-carb (I'm guessing low-protein given other study results)? How many rats? Were they obese to begin with? etc. etc.