Please note: This is a companion version & not the original book. Sample Book Insights:#1 The dominant thinking among medical authorities and researchers in the 1960s was that all cases of obesity were caused by the overconsumption of calories. This thinking was called the conviction of the primacy of gluttony.#2 The prewar European authorities believed that obesity is the result of a hormonal or metabolic dysfunction, and that the only way to get rid of it is to eat less. They believed that the only difference between lean people and people who struggled with obesity is that the lean can control their food intake and appetites, while people with obesity could not.#3 The author explains that obesity is a genetic disorder, and that it is caused by a strong genetic component. He explains that the body regulates the fat we store and use for energy, and that hormones play a role in this process.#4 The theory proposed that just one of these mechanisms went awry, impeding the release of fat from fat cells or promoting its storage, and that this could lead to extreme obesity if continued over years and decades.