And, the most important truth, an individual's ability to lose (and maintain) fat loss is 70-80% controlled by genetics, and 20-30% controlled by effort.

Before everybody loses their mind, no this doesn't mean that some people can't lose weight. What it does mean is; given any two people who maintain identical diet and exercise programs, one may show rapid, excellent results - and the other nearly no results at all. For the second person to gain the same results as the first, the second person has to exercise and restrict calories much, much more rigorously.

This cause of this disparity is the differences in their biology, not their effort. And there is little that can be done about it.

The single greatest lie in the health industry is; if I can do it you can do it too.