#66 - Nature Wants Us to Be Fat (Dr. Casey Means & Dr. Richard Johnson)

#66 - Nature Wants Us to Be Fat (Dr. Casey Means & Dr. Richard Johnson)

Dr. Casey Means, Chief Medical Officer of Levels speaks with Dr. Richard Johnson about his new book, "Nature Wants Us to Be Fat," as well as his insights on the "survival switch" that drives our body to store fat in response to certain conditions like high fructose, dehydration, umami flavors, and more, and how this all relates to our current metabolic disease epidemic.


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Levels helps you see how food affects your health, empowering you with the tools needed to achieve health goals and improve healthspan. Levels Members gain access to the Levels app and continuous glucose monitors (CGMs), providing real-time feedback on how diet and lifestyle choices impact your metabolic health.

Look for new shows every month on A Whole New Level, where we have in-depth conversations with thought leaders about metabolic health

(04:25) - The fat switch
(11:39) - Metabolic syndrome is linked to survival
(13:36) - The switch is good for short term survival, bad for long term
(17:40) - Sugar triggers the switch
(19:39) - Sugar leads to metabolic syndrome, not extra calories
(23:40) - Fructose depletes energy
(31:28) - Vitamin C is protective against obesity
(35:12) - High glycemic foods help our bodies make fructose
(44:29) - Whole fruit is healthy because of the fiber
(53:48) - Salt can trigger fructose production

Transcripts & Show Notes

Episoder(291)

#261 - Uric acid-raising foods to avoid for metabolic, gut, and overall health | Dr. David Perlmutter & Dr. Casey Means

#261 - Uric acid-raising foods to avoid for metabolic, gut, and overall health | Dr. David Perlmutter & Dr. Casey Means

High uric acid can cause gout, but it’s also a marker for worsened metabolic health and gut health and a contributor to neurodegenerative diseases, such as Alzheimer’s. Consumption of purines can lead...

1 Aug 20241h 9min

#260 - Why high insulin levels drive fat storage and weight gain and what you can do | Dr. Robert Lustig & Ben Grynol

#260 - Why high insulin levels drive fat storage and weight gain and what you can do | Dr. Robert Lustig & Ben Grynol

High insulin levels drive the growth of fat cells. In turn, fat gain can exacerbate insulin resistance, leading to a vicious cycle. Insulin is a hormone the pancreas releases in response to glucose ri...

11 Jul 202412min

#259 - What being ‘postdiabetic,’ rather than prediabetic, means and how to get there | Eric Edmeades & Ben Grynol

#259 - What being ‘postdiabetic,’ rather than prediabetic, means and how to get there | Eric Edmeades & Ben Grynol

Before someone develops type 2 diabetes, they go through a prediabetic stage. But if someone is reversing their diabetes and is trending toward better glucose levels or even optimal levels, they are p...

4 Jul 20241h 1min

#258 - What are glucose and insulin and why do they matter for health? | Dr. Robert Lustig & Ben Grynol

#258 - What are glucose and insulin and why do they matter for health? | Dr. Robert Lustig & Ben Grynol

Excess glucose from food gets stored as fat. And our insulin response drives that fat storage. The goal is for the pancreas to release less insulin but for the body to have a healthy response to it. D...

20 Jun 202432min

#257 - Join the “Good Energy” Levels book club and take charge of your health | Dr. Casey Means & Dr. Robert Lustig

#257 - Join the “Good Energy” Levels book club and take charge of your health | Dr. Casey Means & Dr. Robert Lustig

Why are we spending more on health care every year, yet people are getting sicker? “Good Energy,” a book by Casey Means, MD, details how you can take your health into your own hands with the power of ...

14 Jun 20241h 4min

#256 - How quickly can you change your metabolic health and how long does it last? | Dr. Robert Lustig & Ben Grynol

#256 - How quickly can you change your metabolic health and how long does it last? | Dr. Robert Lustig & Ben Grynol

About 93% of people in the United States are not metabolically healthy. But metabolic health can be improved quickly and over time with lifestyle changes. Dr. Robert Lustig and Ben Grynol discuss what...

6 Jun 202410min

#255 - Why you might be a lean mass hyper-responder if you go keto but have high cholesterol | Dave Feldman, Dr. Nick Norwitz & Dr. Dominic D’Agostino

#255 - Why you might be a lean mass hyper-responder if you go keto but have high cholesterol | Dave Feldman, Dr. Nick Norwitz & Dr. Dominic D’Agostino

A lean mass hyper-responder is someone with high LDL and HDL cholesterol and low triglycerides. They are often lean and healthy people who present with strange and alarming lipid numbers after going o...

31 Mai 20241h 40min

#254 - The writing of ‘Good Energy,’ your guide to taking charge of your metabolic health | Dr. Casey Means & Mike Haney

#254 - The writing of ‘Good Energy,’ your guide to taking charge of your metabolic health | Dr. Casey Means & Mike Haney

Writing an evidence-based nonfiction book requires time, dedication, and a true passion for the content. Dr. Casey Means and her brother Calley Means joined forces to create their book “Good Energy: T...

14 Mai 20241h 24min

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