
Dr. Jason Fung
A science-based, practical guide to understanding and reversing obesity by targeting hormonal imbalances, especially insulin.
Dr. Jason Fung originally specialized in kidney disease before focusing on obesity and diabetes.
Section 1
8 Sections
Imagine a world where obesity was almost unheard of—a time when people ate simply, moved naturally, and rarely struggled with their weight. This wasn’t so long ago. For centuries, obesity was rare, even in prosperous societies. But something changed in the late 20th century. Suddenly, the world grew heavier, and a new epidemic took root. How did this happen?
Let's journey through history together. Picture the 1970s: families gathered around tables, eating home-cooked meals, often prepared with real butter and wholesome ingredients. Then, a pivotal moment arrived. The government, aiming to combat heart disease, issued new dietary guidelines. The message was simple but profound: eat less fat, eat more carbohydrates. Overnight, food manufacturers reengineered products to be low-fat but high in sugar and starch. Breakfast cereals, snack bars, and soft drinks flooded the market.
But why does this matter? Because it reveals a powerful truth: obesity is not merely the result of weak willpower or ignorance. Even doctors, armed with years of medical training, have struggled with their own weight. The problem is not a lack of knowledge or effort. It is a complex web of history, culture, and biology.
Consider this: the genes that shape our bodies have not changed in a single generation. Yet, since the 1970s, obesity rates have tripled in many countries. What changed was not our DNA, but our environment—the food we eat, the way we live, and the advice we follow. The rise of processed foods and the demonization of dietary fat set the stage for an epidemic that no one saw coming.
So, as we begin this story, let’s set aside blame and shame. Let’s look deeper, with compassion and curiosity, at how we got here. Obesity is a multifactorial disease, shaped by powerful forces beyond individual control. Understanding these forces is the first step toward healing—both for ourselves and for society.
And with this understanding, we can move forward to explore the next great misconception: the calorie myth. Join me as we unravel why 'eat less, move more' is not the answer we’ve been searching for.
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