This source is an excerpt from Why We Get Sick by Benjamin Bikman, which argues that insulin resistance is a root cause for numerous chronic diseases, not just diabetes. The book is structured to first explain insulin resistance and its widespread impact on various bodily systems, including the cardiovascular, neurological, reproductive, digestive, skeletal, and connective tissues. It then examines the various factors contributing to the development of insulin resistance, such as genetics, aging, hormonal imbalances, obesity, inflammation, and environmental exposures like air pollution and artificial sweeteners. Finally, the book proposes that lifestyle changes, particularly diet and exercise, are the most effective strategies for preventing and reversing insulin resistance, offering practical advice and a plan for readers to implement these changes.