I think it is an equation, just not the one they are using. There is some energy used up in digestion, so a different amount of calories would be burned, as well as how many by different people, at different sizes, at different levels of intensity when you exercise. There are too many variables.
The idea that we can say we ate X amount of calories, and burned Y amount in daily activity, and A amount in exercise EXACTLY, is a myth. We also don't really have a good grasp on how calories affect us. I have recently added a high fiber slice of bread to my eggs for breakfast with apple jelly to up my fiber. However to continue losing weight, I have to eat less calories per day.. 2100 on very low carb, and 1800 at 90 grams a day. According to conventional wisdom, I should be losing faster, but if anything I will lose slower, which right now, is not a huge concern, as long as I continue to lose.
What we do know, is that we have NO idea how much weight we will lose individually based solely on calories, since there are many variables. However, as long as you eat approved foods on a low carb diet ( not my bread..lol ), if you keep calories the same, you will notice that by adjusting CARBS, not calories, you can manipulate how much you lose each week. As long as calories stay the same, and you are eating the same foods in general, raising carbs will slow weight loss down, and lowering it will cause greater weight loss.
Most of us at the start of low carb, also reduce calories a LOT. We cut out the binges, and see a huge drop in calories, so we don't notice this until we are eating a normal amount of calories. So once I established that I could lose a lb a week at 2200 calories and 50 g of carbs, I could then eat the same amount of calories, and eat more beans, peas etc. to up the total carbs, and find that 100 g of carbs, causes me to maintain weight.
I am not sure what thread you are referring to, but I believe we can predict weight loss to a certain extent. We are just watching the wrong numbers. Calories obviously are not the predictor of weight loss that experts say they are. We all know someone who can't lose while eating 1200 calories almost all the time. That should be impossible.
Edited by: RUSSELL_40 at: 9/11/2013 (08:26)
Russell - current BMI 28.6
197 - bmi 30 - done
164 - bmi-25
| current weight: 183.4