These dieting studies seem to come out at a rate of one every month and they all seem to contradict the previous one. I got into a sedentary job at one point and gained 40 lbs in a year. I struggled for 3 more years to lose it. I tried all of the diets and in the end I went to nutritionist who put me on a balanced diet of whole foods and some animal derived proteins. That along with a sensible exercise routine that focused more on burning fat calories than carbs I lost weight at a rate of 2-3 lbs per week. in 5 months I was back to my ideal weight and have maintained it since.