Doreen, The Banting diet analysis by Dr Catherine Champagne was done in 1993, for the article in "Classics in Obesity" by Dr George Bray. He reviewed 10 Banting editions but used the third edition published in 1864. It was the one printed for a modest price and 63,000 copies were sold. https://onlinelibrary.wiley.com/doi....1993.tb00604.x. I didn’t know about Barry Groves later review, thank you for pointing to it.

This new two year study used four eating patterns, and similar in result to Christopher Gardner's one year LC vs LF DietFit Study. At the end of the largest and longest two-year trial on diet and weight loss, the researchers found that the members of each diet group lost a similar amount of weight, averaging about 6.6 to eight pounds. There will be individual differences, some will do better on LC than HC, some on VLC, but there is no "ideal" diet for everyone. These six nutrition and lifestyle tips can be added to any diet.

"They ate more protein.
People who significantly increased the amount of protein they ate lost much more weight than people who did not. By the end of the trial, the high-protein consumers had lost an average of 16.5 pounds – triple the amount that people in the lowest protein group lost.
The reasons? Eating more protein is thermogenic. Our bodies spend a lot of calories digesting and absorbing protein compared with fat and carbs. Protein also increases satiety. When you increase your protein intake, you end up consuming less food, said George A. Bray, a co-author of the study and emeritus director of the Pennington Biomedical Research Center in Louisiana."
​