How To Improve Metabolic Health: 11 Episodes on Insulin, Muscle, and Mitochondria

Wondering how to improve metabolism? Eleven podcast episodes from Huberman Lab, Mind Pump, Rich Roll, On Purpose, and more on insulin sensitivity, muscle mass, sleep, and mitochondrial function, with the key takeaways and quotes from each.

The most reliable way to improve your metabolic health is to build and keep lean muscle, then protect the three inputs that quietly govern your blood sugar: sleep timing, stress load, and what you eat first in the morning. That is the answer these eleven conversations converge on, whether the guest is the NIH researcher who followed the Biggest Loser contestants, a University of Utah biochemist who studies mitochondria for a living, or a Harvard psychiatrist who treats depression as a metabolic problem. Notably, almost none of them frame the goal as speeding up your metabolism.

A word on scope. These eleven episodes come from our library of 1,414 episode summaries, and the selection skews toward conversations published in the past year or so. Treat it as the strongest recent thinking we have summarized on metabolic health, with the caveat that this field moves and a 2026 consensus is a snapshot. Each entry links to our full free summary of the conversation.

Three threads run through the list. Muscle mass improves body composition through glucose disposal and behavior change while barely touching resting metabolic rate. Blood sugar responds to sleep, cortisol, routine, and even light spectrum, which means dietary discipline alone leaves value on the table. And metabolic dysfunction shows up early in the brain as fog, flat motivation, and low mood, decades before it shows up on a standard lipid panel. We unpack all three after the ranked list.

1. The Truth About Insulin Sensitivity and Muscle Growth: Dr. Rhett Bergeron

Mind Pump Show · Sal Di Stefano, Adam Schafer, and Justin Andrews with Dr. Rhett Bergeron · 1h 13m

The most complete practical playbook in this set, and Bergeron earned it the hard way. He was an anesthesiologist training twice a day who still woke up foggy and puffy, and a continuous glucose monitor showed him what his normal fasting labs had hidden. He now ranks his levers in order: lean mass first, a fixed bedtime second, stress load third, and personalized glucose data to tell him which foods deserve blame.

Key takeaways

  • Metabolic dysfunction sits underneath both diagnosed disease and the vague complaints that standard medicine shrugs at: fatigue, brain fog, skin inflammation. All of it traces back to how you process glucose and fat.
  • Strength training beats cardio for insulin sensitivity. Obese subjects who gained muscle while their scale weight held steady still improved their metabolic markers dramatically.
  • A consistent bedtime matters more than total hours. Shifting when you sleep by a couple of hours creates a jet-lag effect even across a full eight hours, and it destabilizes glucose.
  • Cortisol makes the liver dump glucose into circulation, so a hard session or a stressful meeting spikes blood sugar with zero carbohydrate involved. Postprandial readings catch this; the fasting number most doctors order misses it.
  • Large daily glucose swings measurably lower executive function, which makes every other healthy behavior harder to sustain.
I thought I was healthy and felt bad and didn't know that, right? — Dr. Rhett Bergeron

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2. Kevin Hall: Why You Struggle To Lose Weight

Rich Roll Podcast · Rich Roll with Kevin Hall, PhD · 1h 51m · December 2025

The single most useful correction on this page. Hall ran metabolism research at the NIH and followed the Biggest Loser contestants for years, so when he puts numbers on the feeling that your metabolism is broken, they are his own measurements. Expenditure falls roughly 25 calories a day per kilogram lost while appetite climbs roughly 95, which means hunger outruns metabolic adaptation about four to one and the plateau is a hunger problem with a hunger solution.

Key takeaways

  • For every kilogram lost, resting expenditure drops about 25 calories a day while appetite rises about 95. That 4:1 gap is where plateaus live.
  • The biggest metabolic slowdowns showed up in the contestants who lost the most weight and kept it off, so slowdown is a marker of success.
  • Hall's spring analogy: the harder you pull, the harder the pullback, and the size of the pullback tells you how far you pulled.
  • Compensation is remarkably precise. Diabetes drugs that flush calories out through urine get almost fully offset by appetite within months.
  • Choose an intervention you can carry indefinitely, because expenditure stays suppressed after you stop and the weight returns.
For every kilogram of weight that you lose um your calorie expenditure goes down by about 25 calories per day. So you lose, you know, 10 kilos, 22 lb, you'll be burning about 250 calories per day lower than you were before you'd lost that weight. Appetite seems to go up by about 95 calories per day. — Kevin Hall

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3. How Mitochondria Control Your Metabolism: Dr. Jared Rutter

Huberman Lab · Andrew Huberman with Dr. Jared Rutter · 2h 3m

Listen to this one before any protocol episode. Rutter, a University of Utah biochemist and HHMI investigator, dismantles the idea of a single personal metabolism and replaces it with 30 trillion cells each deciding, second by second, whether to burn a nutrient for energy or spend its carbon on building material. Once pyruvate becomes the fork in the road in your head, phrases like insulin sensitivity and fatty liver stop being labels and become consequences of resource allocation.

Key takeaways

  • Whole-body metabolism is the sum of roughly 30 trillion cellular decisions, and tissues have opposing priorities: heart cells demand continuous ATP while intestinal stem cells demand raw material for new cells.
  • Pyruvate is the decision point. Sent into the mitochondria it yields efficient energy; held back, its carbon builds membranes, repairs damage, and divides cells.
  • Mitochondria specialize by location. They cluster at the leading edge of a migrating cell and at nerve terminals far from the cell body, tailored to local demand.
  • Lactate is a transferable fuel as much as a byproduct. The heart takes up and burns what working muscle exports during hard exercise.
  • An overpowered mitochondrion generates reactive species that mutate DNA and damage proteins, which is why chronic overfeeding does harm beyond fat gain.
Every one of our cells, every second of every day, is making resource allocation decisions. What does it do with the stuff that it has? — Dr. Jared Rutter

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4. This Will Speed Up Your Metabolism and Help You Lose Fat: Mind Pump 2831

Mind Pump Show · Sal Di Stefano, Adam Schafer, and Justin Andrews · 1h 58m

The most intellectually honest episode about the muscle-and-metabolism claim, because the hosts concede their critics' point and then win the argument anyway. A pound of muscle burns perhaps 6 to 10 calories more per day than a pound of fat, which is trivial. The payoff arrives instead through glucose uptake, insulin sensitivity, changes in how fat tissue behaves, and a behavioral cascade that controlled trials are poorly designed to capture.

Key takeaways

  • Muscle burns only 6 to 10 more calories per pound per day at rest, so resting metabolic rate is a weak explanation for what lifting does to body composition.
  • Myostatin-inhibited animals become dramatically leaner with minimal change in basal rate, which points at glucose uptake, insulin sensitivity, and fat tissue metabolism as the real mechanism.
  • Two hours a week of strength training produces more fat loss than two hours of cardio, and strength carries over into mobility, stability, endurance, and stamina.
  • Adding 5 to 10 pounds of muscle changes daily behavior: more spontaneous movement, better food choices, habits that compound well outside a study window.
  • GLP-1 medication in teenagers treats the symptom while the behavioral and emotional drivers of eating stay in place, risking metabolic suppression, nutrient deficiency, and dependency.
They're technically right. It doesn't have this huge effect on resting metabolic rate, but that doesn't explain what's happening when you build muscle and why that has such a positive and profound effect on body composition. — Sal Di Stefano

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5. Eating for Better Sleep and Foods That Improve Metabolic Health: Dr. Marie-Pierre St-Onge

Huberman Lab · Andrew Huberman with Dr. Marie-Pierre St-Onge · 1h 57m

The episode that closes the loop between the two levers most people manage separately. St-Onge's lab trimmed sleep by only 90 minutes a night for six weeks in free-living adults and measured real insulin resistance and elevated blood pressure, with postmenopausal women affected most. Then she runs the causality the other way: fiber buys deep sleep, saturated fat costs it, and refined carbohydrate buys a fragmented night.

Key takeaways

  • Cutting sleep from 7.5 to 6 hours for six weeks raised insulin resistance and blood pressure in ordinary living conditions, with a larger effect in postmenopausal women.
  • Sleep loss adds roughly 300 calories a day through sex-specific routes: ghrelin rises in men while GLP-1 satiety signaling falls in women, and reward centers get more active in both.
  • Staying awake burns about 90 extra calories a day, which fails to cover the 300 you eat, and short sleepers also move less.
  • Mediterranean and DASH eating patterns predicted lower insomnia risk across three years, holding after adjustment for physical activity and socioeconomic factors.
  • Higher fiber tracks with more slow-wave sleep, higher saturated fat with less, and simple sugars with more nighttime arousals.
We found that higher intakes of fiber were associated with more deep sleep, higher intakes of saturated fat, less deep sleep, and then more refined carbohydrates, simple sugars, more arousals. You're not getting deep slow-wave sleep, REM sleep as much as you would otherwise. — Dr. Marie-Pierre St-Onge

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6. Dr. Chris Palmer: Mental Illness as a Metabolic Problem

On Purpose · Jay Shetty with Dr. Chris Palmer · 1h 21m · July 2026

The widest-aperture conversation here, and the one with the most arresting statistic: only 7% of American adults clear all five markers of metabolic health, which leaves 93% carrying at least one. Palmer, a Harvard psychiatrist, uses that to argue brain fog, flat motivation, and low mood are often early metabolic symptoms that happen to present psychiatrically. You can hold his strongest claims about bipolar disorder at arm's length and still adopt the screening habit he proposes, which costs nothing.

Key takeaways

  • Only 7% of American adults are metabolically healthy on the five-marker definition: HDL cholesterol, triglycerides, blood glucose, blood pressure, and abdominal obesity.
  • Palmer's argument runs through the cell. Brain tissue requires functional metabolism, so impaired metabolism surfaces first as fog, low motivation, mild anxiety, and depressed mood.
  • Roughly 10,000 chemicals sit in the US food supply, many self-certified under GRAS with no data on metabolic or brain effects. The 2022 teff flour incident hospitalized over 400 people with liver failure.
  • He frames sleep, nutrition, and training as performance inputs: patients describe an unchanged workload becoming manageable once metabolic health improves.
  • THC impairs mitochondrial function, reduces motivation, and raises psychosis risk roughly fourfold, a mechanism consistent with the rest of his metabolic model.
How's my mood? How's my anxiety? How's my ability to sleep? Any of those things should be at least warning signs that you may have impaired metabolism somehow or another impacting your brain. — Dr. Chris Palmer

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7. Fasting Is Making You Fatter: Mind Pump 2824

Mind Pump Show · Sal Di Stefano, Adam Schafer, and Justin Andrews · 1h 45m · March 2026

The necessary counterweight, because intermittent fasting is the first intervention most people reach for when they want a faster metabolism. The hosts stack calorie-matched trials showing identical fat loss with a slight muscle-retention edge for the fed groups, then redirect attention to the lever that measurably moves glucose all day long: protein at breakfast. Their data on habitual breakfast skippers is specific enough to act on this week.

Key takeaways

  • Across 1,700 people, skipping breakfast more than four times a week tracked with 33% higher odds of elevated fasting glucose, 25% higher odds of hypertension, 40% higher odds of reduced HDL, and 24 to 25% higher odds of full metabolic syndrome.
  • Protein at breakfast controls glucose across the entire day even when total daily calories and foods are held identical, confirmed on continuous glucose monitor data.
  • Calorie-matched trials show equal fat loss whether the protocol is fasted or fed, with the trend slightly favoring fed groups for muscle retention.
  • Autophagy, BDNF, reduced inflammation, and the anti-cancer effects credited to fasting arise from calorie restriction itself.
  • Fasting earns a place in three narrow cases: spiritual practice, practitioner-guided gut inflammation, and binge-eating patterns where an occasional 24-hour fast helps psychologically.
Almost everybody under eats protein unless you've been listening to the show and you've now adopted that you focus on that. People that are just kind of eat or do their thing typically are carb-heavy, a lot of sugars, high fats, and don't hit high protein. And you take somebody like that and you skip a whole another meal or two. — Adam Schafer

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8. Dr. A on the Hormone Problem Impacting Millions of Women

On Purpose · Jay Shetty with Dr. A · 1h 23m · March 2026

The clearest clinical illustration of insulin resistance acting as a first domino. In PCOS, cells respond poorly to insulin, insulin climbs, the liver packs the surplus into inflammatory visceral fat, and elevated insulin pushes the ovaries to overproduce androgens, which blocks ovulation and disrupts the whole cycle. Dr. A treats the metabolic pillar first, and her cheapest intervention is a 10 to 20 minute walk after each meal.

Key takeaways

  • Insulin resistance is the first domino in PCOS: high insulin drives visceral fat storage and pushes ovarian androgen production, which blocks ovulation.
  • A 10 to 20 minute walk after each meal wakes up insulin receptors and helps cells pull glucose out of the bloodstream, lowering both glucose and insulin.
  • PCOS has four pillars that each need treatment: insulin resistance, androgen and progesterone imbalance, inflammation from visceral fat, and neurological effects including anxiety and brain fog.
  • Birth control addresses the hormonal pillar alone, which explains why many patients still feel unwell on it.
  • GLP-1 medications help PCOS specifically because they improve insulin sensitivity, which can restore cycles and mental clarity alongside weight loss.
Your genetics load the gun, but your lifestyle pulls the trigger. And that's exactly what happens with PCOS. If you're not sleeping, if you're stressed, if you have a poor diet, if you're not exercising, you're pulling that trigger and making all these symptoms so much worse. — Dr. A

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9. The Foods Quietly Raising Your Alzheimer's Risk: Dr. David Perlmutter

Feel Better, Live More · Dr Rangan Chatterjee with Dr. David Perlmutter · 1h 42m · July 2026

Perlmutter supplies the mechanism that makes metabolic health feel urgent at 40 as well as 70. Microglia, the brain's resident immune cells, flip between a supportive state and a destructive one, and the switch is metabolic: inflammation and insulin resistance push them off mitochondrial energy production and onto glycolysis, after which they recruit their neighbours in a feed-forward loop. He calls blood sugar control job one, and his Framingham numbers show why.

Key takeaways

  • A 2025 Framingham Heart Study analysis followed 1,375 people for 12 years and found each daily serving of ultra-processed food raised Alzheimer's risk by 13%, with roughly threefold risk at 10 or more servings.
  • Microglia switch between supportive M2 and destructive M1 states, and metabolic stress drives the switch. Activated M1 cells then convert more M2 cells in a self-spreading cycle.
  • The metabolic changes behind Alzheimer's begin 20 to 40 years before clinical symptoms, which puts real prevention squarely in your 30s and 40s.
  • Pre-diabetes affects 30 million Americans and roughly 90% have no idea. Fasting insulin, hemoglobin A1C, and continuous glucose monitoring flag it decades before fasting glucose does.
  • Dale Bredesen's 36-intervention protocol has shown reversal of early cognitive decline with hippocampal enlargement on imaging, consistent with a multi-cause metabolic model.
Our body's metabolism determines whether our brain's immune system is going to support a good, wonderful, healthy brain or is going to set the stage for our brain to be destroyed based upon our metabolism. And here's the empowering part about what I just said. Our metabolism, each of our metabolisms, your metabolism is based upon choices that you make every day. — Dr. David Perlmutter

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10. Using Red Light to Improve Metabolism and the Harmful Effects of LEDs: Dr. Glen Jeffery

Huberman Lab · Andrew Huberman with Dr. Glen Jeffery · 2h 14m

The most unexpected lever on this list, and it earns its slot on mechanism as much as protocol. Jeffery, a neuroscience professor at University College London, shows that long-wavelength light passes clear through tissue and gets absorbed by the water surrounding mitochondria, changing its viscosity so the ATP motors spin faster. Three minutes of morning red light improved colour vision by 20% for up to five days in his work, and he links blue-heavy indoor lighting to blood sugar and liver effects.

Key takeaways

  • Red and near-infrared light passes through skin, clothing, and bone, scattering internally so it reaches mitochondria in organs well beyond the application site.
  • Mitochondria absorb almost no red light themselves. The water around them absorbs it, changing viscosity so the ATP-producing motors turn faster.
  • Timing decides the effect. Sunrise to 11am is when mitochondria produce peak ATP; afternoon exposure does far less because the organelles are busy with maintenance.
  • Jeffery puts blue-heavy LED lighting in the same public health bracket as asbestos, tying it to metabolic disorder, fatty liver, and reduced lifespan trends since 2010.
  • Light exposure slows progression and protects function, so the useful window opens well before disease advances.
Your body has never experienced such confined limited spectrum of light. Never experienced it before. — Dr. Glenn Jeffrey

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11. Your Baby's Metabolism Is Being Decided Right Now: Jessie Inchauspé

The Dr. Hyman Show · Mark Hyman with Jessie Inchauspé · 54m

The episode that reframes metabolic health as something handed down through the environment of the womb. Inchauspé went deep into pregnancy nutrition research after a miscarriage and then a successful pregnancy, and she comes back with four pillars: glucose stability, choline, protein, and nutrient density. The UK sugar rationing data she cites is the kind of natural experiment that is hard to wave away, and it belongs in any conversation about metabolic prevention.

Key takeaways

  • DNA is set at conception while epigenetics, meaning which genes switch on, responds to maternal diet and programs fat storage and disease susceptibility.
  • UK sugar rationing data links lower maternal sugar intake to 15% less lifetime diabetes risk in the child. Inchauspé's target is under 25g of added sugar daily.
  • About 90% of pregnant women fall below minimum choline intake. Mothers consuming 900mg versus 430mg daily had infants with 10% faster reaction times at one year.
  • High maternal glucose raises fetal glucose and inflammation, overactivating microglia that may prune neurons incorrectly. Autism rates ran 4 in 100 versus 3 in 100 with gestational diabetes.
  • A protein-rich breakfast stabilizes glucose for the rest of the day, which matters even more in pregnancy because the dopamine response to sugar is amplified.
Your womb is not just an oven. It's more like your baby is a seed and you're the soil. And if you plant this seed in your driveway full of gravel, it's not going to grow as strong and as healthy as if you plant it in a nice piece of soil. — Jessie Inchauspé

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What these episodes have in common

Muscle is the lever, glucose disposal is the mechanism

Every episode on this list that touches training arrives at the same conclusion by a different route, and the agreement is more interesting than it first looks. Mind Pump 2831 openly concedes the number that skeptics love to quote: a pound of muscle burns perhaps 6 to 10 more calories per day at rest, which will do approximately nothing for your waistline. Then the hosts point at myostatin-inhibited animals that become dramatically leaner with barely any change in basal rate, and ask what else could explain it. Their answer is glucose uptake, insulin sensitivity, and shifts in how fat tissue itself behaves.

Dr. Rhett Bergeron gives the clinical version in Mind Pump 2822: obese patients who gained lean mass while their scale weight held flat still saw their metabolic markers improve substantially. Dr. A's PCOS breakdown supplies the reverse proof. When insulin resistance is the first domino, everything downstream gets worse, from androgen production to ovulation to mood, and the interventions that work are the ones that restore insulin signalling.

Dr. Jared Rutter's episode explains why this had to be the answer. Metabolism is 30 trillion cells continuously choosing between burning a nutrient for energy and spending its carbon on building material. Muscle is a large, insulin-responsive place for glucose to go, so adding it changes where nutrients land. Resting metabolic rate is the wrong measurement because it describes the total bill instead of the allocation.

Sleep, stress, routine, and light all move blood sugar

The most actionable convergence on this page has little to do with food. Dr. Marie-Pierre St-Onge's lab cut sleep by 90 minutes a night, from 7.5 hours to 6, for six weeks in people living normal lives, and measured genuine insulin resistance plus elevated blood pressure, with postmenopausal women taking the largest hit. Bergeron adds that the timing of sleep outranks the duration: shifting bedtime by a couple of hours produces a jet-lag effect even across a full eight hours, and glucose variability follows.

Stress does the same work through a different door. Bergeron describes cortisol prompting the liver to dump glucose into circulation, which means a hard training session or a tense meeting can spike blood sugar with no carbohydrate anywhere in the picture. Social-stress experiments show the effect lands on postprandial glucose, which is precisely the reading a standard annual physical skips. His framing of routine as a safety signal to the limbic system is the mechanism behind why consistency beats intensity here.

Dr. Glen Jeffery pushes the boundary furthest. Long-wavelength light penetrates tissue and is absorbed by the water around mitochondria, letting the ATP machinery spin faster, with effects concentrated between sunrise and 11am. He considers the blue-heavy LED environments most of us sit in all day a public health problem on the scale of asbestos, and ties them to blood sugar regulation and fatty liver. Treat this as the least settled claim on the page and the most interesting one to watch.

Where these guests disagree, and what the disagreement teaches

The sharpest conflict is about what metabolic rate deserves credit for. Kevin Hall spent a career measuring it and concluded that adaptation is real yet secondary: appetite climbs about 95 calories a day per kilogram lost while expenditure falls about 25, so the plateau belongs to hunger. Mind Pump arrives at a compatible conclusion from the opposite side, arguing that muscle earns its reputation despite a negligible effect on resting rate. Both camps are telling you to stop optimising the number on the metabolic-rate line.

Fasting is where the disagreement gets practical. Mind Pump 2824 stacks calorie-matched trials showing identical fat loss fasted or fed, with a slight muscle-retention advantage for eating, and argues that protein at breakfast controls glucose across the whole day even when total intake is held constant. Read alongside St-Onge on sleep-driven overeating and Inchauspé on morning protein in pregnancy, a pattern emerges: the front of the day carries outsized metabolic weight, and skipping it to chase autophagy trades a reliable benefit for a speculative one. GLP-1 medications split the group too, with Mind Pump cautious about teenagers and Dr. A enthusiastic for PCOS patients whose core problem is insulin resistance.

The claim with the widest implications comes from Dr. Chris Palmer and Dr. David Perlmutter, and they agree almost completely. Palmer's figure, that only 7% of American adults are metabolically healthy, reframes metabolic dysfunction as the default state. Perlmutter supplies the microglial switch that turns that dysfunction into neurological damage 20 to 40 years before a diagnosis. If they are even partly right, the strength training and sleep hygiene in this list are cognitive interventions with a body-composition side effect, which is a considerably better reason to start on Monday.

Every episode referenced

Frequently Asked Questions

How do I improve my metabolism?

Build lean muscle with two or more strength sessions a week, keep a consistent bedtime, eat protein at breakfast, and walk for 10 to 20 minutes after meals. Those four came up repeatedly across these episodes. Dr. Rhett Bergeron ranks lean mass and sleep timing above food choices in Mind Pump 2822, Mind Pump 2824 shows protein at breakfast controlling glucose for the whole day, and Dr. A calls the post-meal walk her highest-leverage intervention for insulin resistance.

Does building muscle actually speed up your metabolism?

Barely, and that turns out to be the wrong question. Mind Pump 2831 concedes that a pound of muscle burns only 6 to 10 more calories per day at rest. The real effect runs through glucose disposal and insulin sensitivity: Bergeron cites obese patients who gained lean mass with flat scale weight and still improved their metabolic markers, and Dr. Jared Rutter's mitochondria episode explains why where nutrients go matters more than the size of the total energy bill.

What are the signs of poor metabolic health?

Clinically, it is any of five markers: low HDL cholesterol, high triglycerides, elevated blood glucose or insulin resistance, high blood pressure, and abdominal obesity. Dr. Chris Palmer points out that only 7% of American adults clear all five. Before labs turn abnormal, the early signals tend to be subjective: brain fog, flat motivation, mild anxiety, poor sleep, fatigue, and skin inflammation. Bergeron and Palmer both treat that cluster as a metabolic screening prompt.

Does intermittent fasting improve metabolic health?

The evidence in Mind Pump 2824 says calorie-matched comparisons produce equal fat loss whether you fast or eat normally, with a slight edge to eating for muscle retention, and that autophagy and the other celebrated benefits come from calorie restriction itself. Their breakfast-skipper data is the concerning part: across 1,700 people, skipping breakfast more than four times a week tracked with 33% higher odds of elevated fasting glucose and about 25% higher odds of metabolic syndrome.

Where can I read these metabolism episodes as summaries?

Every episode ranked above links to a free 1% Better summary with the core takeaway, four to eight detailed insights, and the notable quotes, so you can preview two hours of conversation in about three minutes and decide what deserves a full listen. Our library covers 1,414 episode summaries across Huberman Lab, Mind Pump, The Dr. Hyman Show, Feel Better Live More, On Purpose, Rich Roll, and dozens of other shows.

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