Metabolic Health Topic Guide

Metabolic dysfunction doesn’t occur suddenly. It develops gradually, often over years, as the body loses its ability to store and access fuel efficiently. The consequences are wide-ranging, increasing the risk for cardiovascular disease, cancer, and neurodegenerative disorders.

This guide brings together the most practical tools, metrics, and interventions to help you understand, measure, and improve your metabolic health. Exclusively available for premium members.

How to Assess

Effective management starts with accurate measurement. Learn which laboratory and imaging tests provide the clearest picture of metabolic health — glucose, insulin, lipids, visceral fat, and more — and how to interpret them in context rather than in isolation.

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Metabolic health assessment toolkit

Ep. #271 (AMA #51)

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A clinical example of early intervention for insulin resistance

Ep. #338

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How an eye exam can be a window into metabolic illness

with Steven Dell, M.D.

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How useful is BMI for assessing metabolic health?

Ep. #271 (AMA #51)

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The problem with HbA1c

Ep. #165 (AMA #24)

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Continuous glucose monitoring for metabolic insight

Ep. #271 (AMA #51)

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OGTTs uncover early insulin dysfunction

Ep. #173 (AMA #26)

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Oral glucose tolerance test (OGTT)

Ep. #271 (AMA #51)

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Fasting lactate as early marker of metabolic dysfunction

Ep. #216 with Josh Rabinowitz, M.D., Ph.D.

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Fasting and resting lactate

Ep. #271 (AMA #51)

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Liver function and NAFLD

Ep. #271 (AMA #51)

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Zone 2 output as an indicator of metabolic health

Ep. #271 (AMA #51)

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Peter's top 5 biomarkers (if he had to choose)

Ep. #329

How to Manage

Improving metabolic health requires targeted action. This section outlines the most effective levers — nutrition, exercise, sleep, stress management, and, when appropriate, pharmacologic therapy — and how to apply them with precision. Small, sustained changes can produce measurable improvements in metabolic function over time.

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Lifestyle & pharmacologic interventions for pre-diabetes and diabetes

Ep. #279 (AMA #53)

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Five interventions for glucose management

Ep. #173 (AMA #26)

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Triple therapy for treating diabetes

Ep. #337 with Ralph DeFronzo, M.D.

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What matters most in preventing and reversing insulin resistance?

Ep. #149 (AMA #20)

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Pros & cons of GLP-1 weight loss drugs

Ep. #337 with Ralph DeFronzo, M.D.

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Pharmacologic interventions for insulin resistance and type 2 diabetes

Ep. #338

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Metabolic benefits of exercise & muscle mass

Ep. #205 with Layne Norton, Ph.D.

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Red light therapy’s impact on metabolic health

Ep. #326 (AMA #65)

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How to think about glucose & insulin management

Ep. #306 (AMA #60)

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Metabolic effects of alcohol

Ep. #211 (AMA #36)

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Dietary approaches for reversing metabolic dysfunction and disease

Ep. #211 (AMA #36)

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Is it necessary to restrict fruit for optimal metabolic health?

Ep. #211 (AMA #36)

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How exercise improves insulin sensitivity

Ep. #149 (AMA #20)

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Peter’s hypothesis on glucose

Ep. #165 (AMA #24)

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Nutrition's impact on longevity via metabolic health

Ep. #306 (AMA #60)

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Aim for lower and less frequent glucose peaks

Ep. #165 (AMA #24)

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Having the lowest average blood glucose possible

Ep. #165 (AMA #24)

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Ceiling for peak glucose following a meal

Ep. #173 (AMA #26)

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Benefits of moving or exercising after a meal

Ep. #173 (AMA #26)

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Sleep as an intervention

Ep. #271 (AMA #51)

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The utility of continuous glucose monitors (CGM)

Ep. #271 (AMA #51)

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Metformin vs. lifestyle interventions

Ep. #279 (AMA #53)

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Is sugar poison?

Ep. #300

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Pairing carbohydrate restriction with exercise

Ep. #328 (AMA #66)

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Principles of a well-balanced diet

Ep. #336 (AMA #68)

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The pros and cons of ketogenic diets

Ep. #336 (AMA #68)

Impact on Disease

Metabolic dysfunction sits upstream of nearly every major chronic disease. Understanding how it contributes to cardiovascular disease, cancer, and dementia provides context for why metabolic health is the foundation of longevity.

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The impact of insulin resistance on disease risk

Ep. #311

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Type 2 diabetes and Alzheimer's disease

Ep. #252 with Rhonda Patrick, Ph.D.

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Impact of poor metabolic health on chronic inflammation

Ep. #301 (AMA #59)

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How hyperinsulinemia drives ASCVD

Ep. #238 (AMA #43)

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How insulin resistance drives chronic disease

Ep. #140 with Gerald Shulman M.D., Ph.D.

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How nutrition & metabolic health impact brain health

Ep. #251 (AMA #46)

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Visceral fat and metabolic health

Ep. #271 (AMA #51)

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How insulin resistance and type 2 diabetes influence hypertension

Ep. #258 (AMA #48)

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Insulin resistance often evades diagnosis and drives chronic disease

Ep. #140 with Gerald Shulman M.D., Ph.D.

Defining Metabolic Dysfunction

Metabolic disease exists on a continuum, from early hyperinsulinemia to insulin resistance, fatty liver, and type 2 diabetes. This section explains the underlying physiology and progression, highlighting the mechanisms that link impaired fuel processing to disease.

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What is Insulin resistance?

Ep. #270 with Andrew Huberman, Ph.D.

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Defining metabolic syndrome

Ep. #271 (AMA #51)

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What's causing the diabetes epidemic

Ep. #337 with Ralph DeFronzo, M.D.

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Pathophysiology of insulin resistance & type 2 diabetes

Ep. #338

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What causes insulin resistance?

Ep. #270 with Andrew Huberman, Ph.D.

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The role of insulin in the body

Ep. #149 (AMA #20)

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Understanding what insulin resistance is

Ep. #140 with Gerald Shulman M.D., Ph.D.

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Insulin resistance develops long before elevated fasting glucose shows up

Ep. #162 with Sarah Hallberg, D.O., M.S.

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Defining insulin resistance across tissues & phenotypes

Ep. #337 with Ralph DeFronzo, M.D.

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A mechanistic discussion of what causes insulin resistance

Ep. #140 with Gerald Shulman M.D., Ph.D.

Articles Related to Metabolic Health

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Premium Article

Assessing metabolic health: where HbA1c falls short, and how it compares to fasting glucose, CGM, and OGTT

Free Article

Lean mass loss on GLP-1 receptor agonists: a downside of the “miracle drugs”

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Premium Article

Sugar substitutes: deep dive into the pros, cons, available options, and impact on metabolic health

Free Article

Compounding effects of multiple metabolic conditions on cardiovascular risk

Free Article

Does NMN improve metabolic health in humans?

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Premium Article

A guide to Zone 2 training: its profound impact on health, detailed training instructions, addressing male and female differences, and more

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Premium Article

The [almost] unbelievable effects of a high maximal aerobic capacity on all-cause mortality

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Premium Article

Optimizing protein quantity, distribution, and quality

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Premium Article

Metformin as a potential longevity medication: where do we stand?

Free Article

Continuous glucose monitoring to improve health in non-diabetics

Free Article

How deadly is type 2 diabetes?

Free Article

Alternate Day Fasting

Free Article

Time-restricted eating: efficacy versus effectiveness

Free Article

Do fat cells “remember” obesity even after weight loss?

Free Article

Is cold exposure beneficial for metabolic health?

Free Article

Failure of resveratrol to improve metabolic health is another nail in the coffin

Full Podcast Episodes Related to Metabolic Health

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AMA

Understanding and improving your metabolic health

Ep. #271 (AMA #51)

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AMA

New insights on GLP-1 agonists (Ozempic, Wegovy, Mounjaro)

Ep. #320 (AMA #64)

Guest Episode

Confronting a metabolic epidemic: understanding liver health and how to prevent, diagnose, and manage MAFLD and liver disease

Ep. #302 with Julia Wattacheril, M.D., M.P.H.

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AMA

Deep dive into blood glucose: why it matters, important metrics to track, and superior insights from a CGM

Ep. #165 (AMA #24)

Guest Episode

Challenging the status quo of treating metabolic disease, and a personal journey through a cancer diagnosis

Ep. #162 with Sarah Hallberg, D.O., M.S.

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AMA

Metabolic health & pharmacologic interventions: SGLT-2 inhibitors, metformin, GLP-1 agonists, and the impact of statins

Ep. #279 (AMA #53)

Podcast Episode

Insulin resistance masterclass: The full body impact of metabolic dysfunction and prevention, diagnosis, and treatment

Ep. #337 with Ralph DeFronzo, M.D.

Guest Episode

A masterclass on insulin resistance—molecular mechanisms and clinical implications

Ep. #140 with Gerald Shulman M.D., Ph.D.

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AMA

Simplifying the complexities of insulin resistance: how it's measured and what we can do about it

Ep. #149 (AMA #20)

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AMA

Continuous glucose monitors, zone 2 training, and a framework for interventions

Ep. #173 (AMA #26)

Guest Episode

Zone 2 Training and Metabolic Health

Ep. #85 with Iñigo San Millán, Ph.D.

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AMA

Optimizing nutrition for health and longevity: myth of a “best” diet, complexities of nutrition science, and practical steps for building a sustainable diet

Ep. #328 (AMA #66)

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AMA

Preventing cognitive decline, nutrition myths, lowering blood glucose, apoB, and blood pressure, and more

Ep. #306 (AMA #60)

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AMA

Exercise: longevity-focused training, goal setting, improving deficiencies, managing emotional stress, and more

Ep. #285 (AMA #55)

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AMA

High-intensity interval training: benefits, risks, protocols, and impact on longevity

Ep. #293 (AMA #57)