Studies comparing ketogenic diets to non-low carbohydrate diets matched for protein and calories showed less lean body mass accrual in the ketogenic group.

“so there's only really two studies i know of that examined like a protein and calorie equated low carbohydrate diet versus a protein-calorie equated non-low carbohydrate diet it was it was ketogenic so they measured blood ketones and saw they went up and this was i think 12 weeks is by somebody vargas was the author okay and they did see less lean body mass accrual in the ketogenic diet group now they still increase lean body mass that's important to note um but the group that was getting carbohydrate or more carbohydrates had more lean body mass”