『Health at Every Size』要約

In "Health at Every Size," Linda Bacon challenges the conventional wisdom that weight loss is the key to health. Bacon, a nutrition scientist, argues that the relentless pursuit of thinness is not only ineffective but actively harmful, and proposes a paradigm shift toward body acceptance and intuitive self-care. The book is structured around the HAES principles, which reject weight as a primary health metric and instead focus on sustainable behaviors like intuitive eating and joyful movement. Bacon critiques the $60 billion diet industry and the medical establishment's weight-centric approach, citing research showing that most dieters regain lost weight and that weight cycling may increase health risks. The book explores the "obesity epidemic" narrative, arguing it is fueled by cultural bias and flawed science rather than solid evidence. Bacon introduces concepts such as the "health at every size" model, which emphasizes social, emotional, and physical well-being independent of weight. She discusses the "set point" theory, suggesting bodies have a natural weight range they defend, and that dieting disrupts this regulation. The book also addresses the psychological toll of weight stigma, including disordered eating, depression, and avoidance of healthcare. Bacon draws on studies like the Nurses' Health Study and the Framingham Heart Study to support her claims, though she acknowledges limitations in nutritional epidemiology. Instead of prescribing calorie counts, Bacon advocates for "intuitive eating" — honoring hunger and fullness cues — and "health-centered" rather than "weight-centered" goals. She includes practical guidance for adopting HAES, such as rejecting diet mentality and cultivating body respect, while acknowledging that systemic change is needed in healthcare and media. The book is both a scientific critique and a call to action, aiming to liberate readers from diet culture and promote genuine well-being.