This episode is brought to you by InsideTracker.

Why do we get fat? As Americans have gotten heavier over the past century, and disease rates have skyrocketed, there have been many theories: We’re eating too much fat. Too many carbs. An excess of sugar. Is it our lifestyle or our diet that’s to blame? Or could there be a single common cause that explains the sharp increase in not only obesity, but conditions as disparate as heart disease, cancer, and dementia? 

This week on The Dhru Purohit Podcast, Dhru sat down with Dr. Richard Johnson to talk about his team’s discovery of the fructose-powered survival switch—a metabolic pathway that animals in nature turn on and off as needed, but that our modern diet has permanently fixed in the on position, becoming a fat switch—and how it has revolutionized the way we think about why we gain weight. 

Dr. Richard Johnson is a Professor of Medicine at the University of Colorado in Denver and has been a practicing physician and clinical scientist for over 25 years. He is internationally recognized for his seminal work on the role of sugar and its component fructose, in obesity and diabetes. His work has also suggested a fundamental role for uric acid (which is generated during fructose metabolism) in metabolic syndrome. His new book is entitled Nature Wants Us to Be Fat and will be published on February 8, 2022.

In this episode, we dive into: 

-Why nature wants us to get fat and why it’s important for survival (5:44)

-What triggers the fat storage switch (9:05)

-The central function of uric acid in the body (16:32)

-How uric acid, previously thought of only in terms of gout, is actually playing a central role in metabolic disorders (20:54)

-Understanding the difference between fructose and glucose (26:12)

-Why obesity is not a calories in, calories out problem (29:38)

-Why it’s fructose (not glucose) that drives insulin resistance and metabolic disease (49:51)

-The survival switch: why humans become fat (1:10:38)

-Alcohol consumption and obesity (1:33:54) 

-The surprising role salt and dehydration play in fat accumulation (1:48:45) 

Also mentioned in this episode:

-Nature Wants Us to Be Fat: The Surprising Science Behind Why We Gain Weight and How We Can Prevent—and Reverse—It - https://benbellabooks.com/shop/nature-wants-us-to-be-fat/.

For more on Dhru Purohit, follow him on Instagram @dhrupurohit, and on YouTube @dhrupurohit. You can also text Dhru at (302) 200-5643.

This episode is brought to you by InsideTracker.

InsideTracker looks at everything from metabolic and inflammatory markers to nutrients and hormones. Traditional lab tests can be hard to read on your own, but InsideTracker makes their results easy to understand and provides tips on how to use food first for optimal nutrition. Right now, they’re offering my podcast community 25% off. Just go to insidetracker.com/DHRU.

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