Simeons understood that an important part of studying weight loss was to research what causes weight gain and overall obesity. He knew that the only way in which to burn fat was to first see where it comes from. Throughout his 10 years of research and observations, Simeons narrowed it down to three main reasons. These are the psychological aspects, compulsive eating and reluctance to lose weight. With psychological aspects, he believed that emotional eating is an instinct gratification tactic by a part of the brain that is having difficulty finding emotional comfort. From Simeons experience, he only believes that compulsive eating constitutes about 1-2% of obese people, but still concludes that it can be a factor. He also believes that most obese people are truly hungry and not susceptible to sudden hunger attacks and compulsive consumption. Simeons final point is about the reluctance to lose weight. Simeons points out that some patients become deeply attached to their fat and do not like the idea of losing it. He makes many points about the psychology behind this reluctance and highlights factors such as an attachment to their obese childhood’s, fear of people liking them after weight loss, or the inability to see the reality of the situation they are in. In this instance, it is important to understand that your self image could be inhibiting your ability to lose weight.
While studying the psychological rather than the physiological aspects behind obesity, Simeons began to study the diencephalon or hypothalamus, a part of the brain that we have in common with all vertebrate animals. A very primitive part of the brain, the diencephalon directs the central nervous system and controls functions of the body, such as breathing, digestion, sex and sleep. It was through this discovery, that Simeons started to connect the diencephalon with the storing and burning of fuel in the body. He believed that the aspect of the brain that controlled so much of our body, must also contribute to how we store fat. With the various “storage banks” of fat around the human body, Simeons thought that if he could tap into the “control center” of the human brain that operated this fat movement, he could discover ways of weight loss not yet examined.