The Fast Lean Pro formula was created in hopes of deceiving the brain into believing that individuals are fasting. This idea follows the advantages of intermittent fasting that have been noted by numerous studies. The fasting period, one of the two windows of eating in place, allegedly flicks a switch that causes the body to burn fat reserves and destroy any old and dead cells. Consequently, the body will begin a natural regeneration process to aid in cell renewal and to support weight loss. The latter process of elimination and rejuvenation is referred to as autophagy.

One source that explored autophagy reported how it has been scientifically linked to a reduced likelihood of developing cancer, type 2 diabetes, and Alzheimer’s disease. Fasting is only one method of accelerating the process; others include exercise and caloric restriction. To return to the subject of weight loss, glucagon levels tend to rise during this process, which is an important component that regulates blood sugar levels and suppresses appetite. Of course, the lack of energy is a disadvantage, but this is something that the body will likely adjust to with time.

Overall, autophagy does not necessarily cause weight loss directly, but it may facilitate it by improving insulin sensitivity, preserving lean muscle mass, lowering ghrelin levels, and breaking down fat droplets. More human studies are still required to fully understand the relationships discussed thus far. At this point, we've covered the basics of the Fast Lean Pro process, it's time to evaluate its worth by breaking down the ingredients.