014 从无麸质到生酮：营养师眼里的流行饮食神话 A Bite into Nutrition Myths from Gluten-Free to Keto

【聊了什么 The What】 无麸质饮食真的更健康吗？减肥到底该低碳还是低脂？市面上五花八门的保健品，是不是智商税？关于“吃”这件事，我们每天都在做决定，却也时常感到困惑。本期节目，我们请来美国注册营养师张千慧博士，为你一一击破关于流行饮食的常见迷思。 我们将以“无麸质饮食”和“低脂 vs. 低碳之争”为两大案例，回顾营养科学的发展轨迹，探讨其研究范式的局限性，并揭示食品工业的利益冲突如何深刻影响着公共卫生建议。究竟是否存在一套适合所有人的“最佳饮食”？当面对海量的营养信息时，我们该如何建立自己的思辨框架？本期节目将带你“浅尝不止”，从科学与历史的纵深处，重新理解我们与食物的复杂关系。 Is going gluten-free really healthier? When it comes to weight loss, should you cut carbs or fat? And what about all those supplements on the market—are they worth it or just a scam? Eating is something we do every day, yet we’re constantly confused by conflicting information. In this episode, we invite Dr. Jera Zhang, a registered dietitian based in the U.S., to debunk some of the most common myths surrounding popular diets. Focusing on two major case studies—“the gluten-free diet” and “the low-fat vs. low-carb debate”—we trace the evolution of nutrition science, question the limitations of its research paradigms, and expose how corporate interests in the food industry shape public health recommendations. Is there truly one “optimal” diet for everyone? How do we build our own critical thinking framework amid a flood of nutritional advice? This episode goes beyond surface-level bites, offering a deeper historical and scientific look into our complex relationship with food. 【时间轴 The When】 02:10 从流行饮食审视人与食物的关系。 05:10 详解无麸质饮食：麸质的定义，无麸质饮食的医学起源，谁需要无麸质饮食 26:43 低碳水化合物与低脂饮食的世纪之争 42:55 Q&A：低碳对女性生理期影响，在美国什么情况下可以看营养师，益生菌、保健品（维生素D、鱼油等） 65:12 营养学研究的复杂性和食品工业的强大影响力 02:10 Viewing human-food relationships through the lens of popular diets 05:10 Deep dive into gluten-free diets: What is gluten, the medical origins of gluten-free eating, who really needs it 26:43 The century-long battle between low-carb and low-fat diets 42:55 Q&A: Effects of low-carb diets on menstrual cycles, when to see a dietitian in the U.S., probiotics and supplements (vitamin D, fish oil, etc.) 65:12 The complexity of nutrition research and the powerful influence of the food industry 【我们是谁 The Who】 选修课 Universus 是一档分享和探讨泛文化话题的中文播客，脱胎于2013年创办的纽约文化沙龙。 我们力求引发对学科方法和视角的认知和思考，而不仅仅是知识的传递。我们在组织活动的过程中积累了一些经验和人脉，尝试打造成年人的博雅教育，并在播客中拓展这样的探索。我们希望审视和反抗无意识的价值规训与随波逐流。我们希望冷酷地剖析自己的偏见，热忱地拥抱多元视角。我们希望去工具化，真诚地感知、理解、创造自己的生活和复杂的世界。我们追随原初的好奇而非代餐式的猎奇。话题可以轻松，方法力求严肃。在《选修课》里，我们互相映照，唤醒失落的维度。 主讲： 张千惠 Jera Zhang: 美国注册营养师，纽约市立大学亨特学院营养与公共健康系助理教授 选修课 Universus is a Chinese-language podcast created by the same people who founded the New York Chinese Cultural Salon (纽约文化沙龙）in 2013. The past decade of organizing events and talks put us in a position of creating a sort of liberal arts education experience for those who have left school. We strive to go beyond merely transmitting knowledge to reflecting on complex topics using cross-disciplinary perspectives. We strive to resist conformity, to dissect our own biases, and to embrace diverse schools of thought. Our goal is to help professionals resist becoming just a tool of production, and to understand the world around us in earnest. We let our genuine curiosity be our guide. With a light-hearted tone, we approach each topic seriously. We hope that “选修课 Universus” creates a space to explore lost dimensions. Our guest: Jera Zhang: Registered Dietitian (RD), Assistant Professor in the Department of Nutrition and Public Health at Hunter College, City University of New York 【买咖啡 Please Support Us】 如果喜欢这期节目并愿意想要给我们买杯咖啡： 打赏平台：www.patreon.com/universuspod 商务合作邮箱：[email protected] If you like our show and want to support us, please consider the following: 打赏平台: www.patreon.com/universuspod Business Inquiries Email: [email protected]