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.
Latest Answers