Congrats on your transformation! You should feel very proud of yourself to have come so far and to have gotten to the point where you can listen to your stomach. Surprisingly, that simple communication with our body is something that so many of us have trained ourselves to not pay any attention to. After suffering with an eating disorder for about 15 years, I got to the point where I didn’t even know what it felt like to be hungry anymore! I had to really work to “hear” that signal. And you’re right, counting calories can be an obsession that can take over your life and your thoughts, so I think it’s awesome that you have cut back from that and are just listening to your wants and needs and not freaking out over a piece of cake.
The authors wanted to compare low-fat vs. low-carb diets, but they also wanted to study genetic and physical makeups that purportedly (their word) could influence how effective each type of diet will be for people. Previous studies had suggested that a difference in a particular genetic sequence could mean that certain people will do better with a low-fat diet. Other studies had suggested that insulin sensitivity may mean that certain people will do better with a low-carb diet.
Harvie, M. N., Pegington, M., Mattson, M. P., Frystyk, J., Dillon, B., Evans, G., … Howell, A. (2011, May). The effects of intermittent or continuous energy restriction on weight loss and metabolic disease risk markers: A randomized trial in young overweight women. International Journal of Obesity (London), 35(5), 714–727. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3017674/