The human body is really well evolved at seeking out sources of calories, and isolating those from poorer sources of calories. This basically means we are good at finding sources of sugars and fats. Remember: for most of our existence, finding enough calories was a very difficult task – its only fairly recently that we have a huge abundance of calories for most people.
Because of this, its quite hard to find chemicals that trigger the same taste and smell responses, do not provide lots of calories to us, and are not dangerous to some degree.
The bad things in food are what make them taste good. Your body makes you crave things with alot of calories as a survival mechanism so the low calorie version will always taste less good because of this. Carbs and fat are in fact nutrients and your body is hard wired to seek out whatever will keep it alive with the least amount of effort
There already are, although they are not zero calorie cookies they can be made with fats our body cannot digest. Some of the issues with this is you can get anal leakage from the resulting greasy liquid stools that you can’t fully hold in. So can we do it? Yes more or less. Is free of side effects, no. And that is why you don’t see more of it. Sugar substitutes seem to work better but it is not clear that this is side effect free either. Some studies show alterations of metabolism which potentially might be harmful, and lack of weight loss anyway.
There already are, although they are not zero calorie cookies they can be made with fats our body cannot digest. Some of the issues with this is you can get anal leakage from the resulting greasy liquid stools that you can’t fully hold in. So can we do it? Yes more or less. Is free of side effects, no. And that is why you don’t see more of it. Sugar substitutes seem to work better but it is not clear that this is side effect free either. Some studies show alterations of metabolism which potentially might be harmful, and lack of weight loss anyway.
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