Slender Fx™ regulates leptin, which is believed to act on the brain to signal satiety therefore reducing hunger. Leptin also assists in the regulation of energy intake and energy expenditure, including the management of appetite, metabolism and body fat storage.

The brain has no eyes - and there are no mirrors inside our heads - therefore the brain does not care about body weight from the point of view of how the body looks. The brain has no ideas when a person thinks he or she is fat or at the right body weight. It senses how much fat is on hand by a system of communication with fat cells. Its a matter of survival. The body is amazing machine. the body's survival mode is much more powerful than a person's willpower - a reason why abnormal cravings reflect Leptin problems. When the brain senses that Leptin levels are normal, there is no need to store extra calories and fat.