> But at the end of the day, it basically just comes down to how many calories you put in your body.
What about this study[1], which fed twin pairs a carefully controlled diet, but nonetheless resulted in huge variances in weight gain ("The mean weight gain was 8.1 kg, but the range was 4.3 to 13.3 kg") between twin pairs? Surely if your body weight was determined by CICO, we'd expect everyone to gain the same amount of weight given the same calories/diet?
What about this study[1], which fed twin pairs a carefully controlled diet, but nonetheless resulted in huge variances in weight gain ("The mean weight gain was 8.1 kg, but the range was 4.3 to 13.3 kg") between twin pairs? Surely if your body weight was determined by CICO, we'd expect everyone to gain the same amount of weight given the same calories/diet?
[1] https://www.nejm.org/doi/full/10.1056/nejm199005243222101