https://www.worthydiets.com/keto-xr-diet/
Keto XR Diet :In 2014, a group of three Brazilian researchers assessed the available literature on the effectiveness of low-carbohydrate diets in a meta-analysis. They specifically looked at trials that compared a ketogenic diet that consisted of no more than 50 grams of carbs per day with a conventional, low-fat diet with less than 30% of calories from fat. The researchers included 13 studies that lasted 12 months or more with a total of 1577 subjects.