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Episode
Ancestral Hacks for Modern Health
~215 min
Episode Brief·YouTube

Ancestral Hacks for Modern Health

Ben Greenfield
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TL;DR

The four things you'd lose by not watching

4 items

TL;DR

The four things you'd lose by not watching

4 items
1

Ben Greenfield outlines a comprehensive dietary and lifestyle system rooted in ancestral health, emphasizing food variety, proper preparation (soaking, sprouting, fermenting), and strict avoidance of fried foods and vegetable oils due to their long-lived cellular damage.

2

He provides a step-by-step guide to eating out healthfully: bitters-based cocktails or safer wine choices, skipping fried appetizers and bread baskets, prioritizing grass-fed/low-mercury proteins, and substituting starchy sides for vegetables.

3

His current biohacks include hardwiring all electronics to reduce EMF, using circadian-adjustable light bulbs, placing a HEPA air filter in the kitchen to handle cooking particulate, and drinking hydrogen water as a selective antioxidant that doesn't blunt exercise adaptations.

4

On psychedelics, he has shifted from high-dose exploration to exclusively microdosing, citing profound spiritual risks; for testosterone, he advocates exhausting natural measures (heavy leg training, specific supplements, Dutch hormone testing) before considering enclomiphene or low-dose transdermal cream.

Protocols

Concrete recipes — what, when, how much, and why

10 items

Incorporate movement into workday via walking calls and treadmill desks

WhatWalk while on the phone or use a walking treadmill during desk work to mimic ancestral movement patterns.
WhenThroughout the workday, especially during calls or deep work sessions.
DoseHe walks on a treadmill for entire episodes/podcasts; for writing phases, he aims to be in his office for eight hours but moving periodically.
For whomAnyone with a sedentary job who wants to maintain physical activity without separate gym time.
WhyImproves BDNF (brain-derived neurotrophic factor), blood flow, blood glucose control, metabolism, and fat burning; aligns with ancestral human activity levels.
CaveatsPeople may expect to see your face on video calls; he tells them he's walking and suggests they walk too.

Ben references studies showing that movement during work boosts focus and BDNF, which he calls 'Miracle-Gro for your brain.' He laments the loss of physical jobs and attempts to 'hack' his office to replicate ancestral hunting and gathering movement. His setup includes a walking treadmill, kettlebell, pull-up bar, and a CAROL bike for high-intensity bursts. For coaching calls, he often walks outside with his phone in his pocket, telling clients they don't need to see his face to get value. He notes some pushback but believes it's worth overriding social expectations for health.

Mechanism

Physical movement increases blood flow to the brain, upregulates BDNF which supports neurogenesis and synaptic plasticity, improves glucose utilization and insulin sensitivity, and enhances fat oxidation.

Personal experience

I have a walking treadmill I've got clients who will have like you know kettle bells on the floor of their office or a pull-up bar... if I'm like in deep in book writing phase my goal is to be able to just you know be locked in my office for eight hours and walk out and not feel like I need to go hit the gym.

they've actually done studies on this and shown improvements in Focus improvements in uh what's called brain derived neurotropic factor bdnf which is kind of like Miracle growth for your brain

Also said
“you know improved blood flow obviously better blood glucose control so better metabolism more fat burning all sorts of things happen if you can kind of like move during your workday”— Lists multiple physiological benefits of workplace movement

Maximize dietary variety to build a resilient microbiome

WhatEat a wide diversity of herbs, spices, vegetables, fermented foods, and novel produce rather than rotating the same few items weekly.
WhenWith every meal; aim for as many different plant species per week as possible.
DoseNo strict number; the goal is to continually introduce unfamiliar foods and change up the grocery cart.
For whomAnyone, especially those with digestion issues who have narrowed their diet to a few 'safe' foods.
WhyA diverse microbiome enhances digestion, immune function, and brain health; ironically, restricting food groups (e.g., carnivore) can shrink diversity and worsen food sensitivities over time.
CaveatsThere can be an adaptation period with gas and bloating when introducing new fermented foods or fibrous plants; start slowly and persist.

Ben observes that in Blue Zones and among long-lived populations, there is no consistent macronutrient pattern but rather a common thread of consuming a massive variety of whole foods. He contrasts the typical Western salad (lettuce, cucumber, tomato) with the rich diversity seen in traditional diets. To achieve this, he recommends joining a CSA (community-supported agriculture) to receive random seasonal produce that forces culinary experimentation. The key insight is that avoiding plant foods due to fear of lectins or gut irritation actually creates a more fragile gut; gradually increasing diversity trains the microbiome to handle a wider array of foods, much like early peanut exposure prevents allergies (citing Marty Makary's book 'Blind Spots'). He stresses that the goal is variety of real, recognizable foods, not processed junk.

Mechanism

Each plant species provides distinct prebiotic fibers that feed different bacterial strains, increasing microbial diversity. A more diverse microbiome improves gut barrier integrity, produces a wider spectrum of beneficial short-chain fatty acids and neurotransmitters, and strengthens the gut-brain axis.

Personal experience

my wife and I did this for years where we signed up for a farmer box from a local Farm... foods would show up at our house like you know rutabaga artichokes and kohlrabi and all that stuff we had no clue how to cook we were kind of like forced to expand our pallet

if you have a so-called princess gut a lot of times you can stay super safe and say well I'm just going to go carnivore... but the problem is the more you limit the less diverse your microbiome becomes the more of a princess gut you get

Also said
“the more you introduce a wide variety into your diet the more you're able to handle the more of an iron gut that you make”— Summarizes the counterintuitive solution for sensitive stomachs

Soak, sprout, or ferment grains, legumes, nuts, and seeds

WhatBefore cooking, rinse and soak oats, quinoa, beans, lentils, etc. overnight with a splash of vinegar or salt, then rinse again; use traditional fermentation for grains like wheat (sourdough).
WhenDuring meal prep: soak the night before, cook the next day.
DoseSoak for at least 8-12 hours; fermenting sourdough takes days but store-bought slow-fermented bread also counts.
For whomAnyone who eats grains, legumes, nuts, seeds—especially those who experience gas, bloating, or see undigested food in stool.
WhyReduces or deactivates anti-nutrients like lectins, saponins, and phytic acid that can irritate the gut and block mineral absorption; improves digestibility and nutrient bioavailability.
CaveatsRequires planning ahead; not all packaged directions include soaking steps, so you must ignore conventional cooking times.

Ben argues that humans are smarter than plants, and rather than avoiding plants altogether, we should use traditional preparation techniques that deactivate their natural defense compounds. He gives the example of quinoa: the bitter saponin coating must be thoroughly rinsed and soaked, otherwise it can cause digestive distress and pass through undigested. Wheat, if chewed raw, is dense in gluten and lectins, but slow fermentation into sourdough significantly lowers gluten content and makes it far more digestible. He also extends this to hearty greens like kale, which should be cooked or steamed to break down cell walls and unlock nutrients. This approach not only improves tolerance but also increases the array of foods one can enjoy, further boosting dietary variety.

Mechanism

Soaking activates endogenous enzymes (phytase) that degrade phytic acid, releasing bound minerals. Fermentation by lactic acid bacteria partially pre-digests proteins and carbohydrates, reducing immunogenic gluten peptides and lectins. Sprouting increases vitamin content and further reduces enzyme inhibitors.

Personal experience

if I want to have oatmeal for breakfast I will take the oats and I'll rinse them and I'll just put them in a Mason glass jar and leave them overnight with a little bit of vinegar in there to break them down wake up in the morning rinse that and then make my oatmeal and I can't have oatmeal without having a little bit of digestive distress just straight off the shelf but if I soak it overnight like overnight oats I digest it just fine

a lot of people will you know eat quinoa and wheat and amaranth and millet and beans and lentils and legumes and all this stuff and not know that these foods are supposed to be soaked and sprouted and fermented and rinsed and overnight cooked

Also said
“if you go buy quinoa from Costco... open up the pack... and make it according to package instructions you might have gas or you might wind up with like quinoa in your crap the next morning and it's not because you're allergic to quinoa it's because it's lined with this soap likee irtin called saponin”— Illustrates the specific gut-irritating compound and the consequence of skipping preparation

Restaurant eating strategy: optimize drinks, appetizers, entrées, and skip dessert

WhatStart with a bitters-forward cocktail or lemon soda water with bitters; choose wine from France, Italy, or New Zealand; avoid fried appetizers and bread baskets; select grilled/baked/steamed protein with sides of vegetables; request sauce/dressing on the side; skip restaurant dessert and have yogurt with dark chocolate and berries at home.
WhenWhenever dining out or traveling for business.
For whomAnyone who eats out frequently and wants to maintain health without social isolation.
WhyMinimizes intake of oxidized vegetable oils, commercial dairy, added sugars, and pesticides/herbicides, while supporting digestion and keeping blood glucose stable.
CaveatsSpecialty bitters still contain a tiny amount of alcohol; organic/biodynamic wine may not always be available; some protein upgrades (grass-fed) depend on the restaurant.

Ben breaks down the meal chronologically. For drinks, bitter compounds stimulate digestive enzyme secretion and lower the glycemic response of the subsequent meal. He recommends a cocktail heavy on bitters (like a Negroni style) or a non-alcoholic bitters and soda. For wine, he avoids US wines because they can use over 70 pesticides and are often high in sugar due to irrigation; he sticks to Old World (France, Italy) and New Zealand wines with biodynamic practices, lower sugar, and fewer chemicals. Appetizers: he almost entirely avoids fried foods because heated vegetable oils create oxidized compounds that incorporate into cell membranes and persist for years—he would rather eat pure sugar (cotton candy) than a corn dog. He also skips bread baskets and starchy sides. For the entrée, he prioritizes protein sourcing: grass-fed beef, low-toxin pork if pastured, small fatty fish (salmon, sardines, mackerel) to minimize mercury. Sauces and dressings are typically high in industrial seed oils, so he orders them on the side. For dessert, he finds most people secretly don't want it, so he suggests being the one to say 'I'm not feeling dessert'—often everyone agrees. At home, he enjoys full-fat yogurt, dark chocolate, and frozen blueberries.

Mechanism

Bitter compounds stimulate bitter taste receptors in the gut, increasing secretion of gastrin and bile, which improves digestion and slows gastric emptying. Oxidized linoleic acid from heated vegetable oils becomes incorporated into cell membranes and lipoproteins, potentially causing oxidative stress for months. Old World wines, grown without excessive irrigation, have thicker grape skins and higher polyphenol content.

Personal experience

I almost 100% avoid fried foods... if you were to walk up to me at the county fair and offer me like a stick of cotton candy or a corn dog I'd have a stick of cotton candy 10 times out of 10

fried foods are one of the worst because the vegetable oil that is heated up can become very oxidized and rancid and those oxidized compounds can stick around in your body for up to a couple of years

Also said
“the three countries that I look at that are usually pretty safe are France Italy and New Zealand”— Specifies the wine-sourcing rule
“if I don't see that the pork is like pastured pork I'm pretty careful with ordering you know like like the bone and pork chop”— Provides a concrete protein selection rule

Use circadian-friendly light bulbs with adjustable brightness modes

WhatReplace home light bulbs with bulbs that switch between daytime, evening, and nighttime modes by toggling the wall switch (e.g., Bond Charge or Block Blue Light).
WhenThroughout the day: switch to daytime mode in the morning and workspace, evening mode for relaxing, and dim red/nighttime mode before sleep.
For whomAnyone spending significant time under artificial light, especially in the evening.
WhyAligns artificial lighting with natural circadian rhythms, reducing blue light exposure at night and supporting melatonin production.
CaveatsRequires switching out all bulbs; some LED bulbs still emit flicker; ensure they are 'O-LED' or incandescent for the healthiest option.

Ben explains that modern LED fixtures produce flicker and harsh blue wavelengths that cause 'brain drain' by the end of the day, even if one feels fine. He used to manually put red bulbs in the bedroom and dimmer bulbs in living areas, but now uses smart bulbs where a single on-off-on toggle cycles through brightness and color temperature. He wears blue-blocking glasses during podcasts when extra LED lights are needed. The core principle is that our ancestors experienced gradual light transitions from bright full-spectrum daylight to darkness, and mimicking that with technology prevents circadian disruption that can impair sleep, immune function, and metabolic health.

Mechanism

Blue light (480 nm) suppresses pineal melatonin secretion via melanopsin receptors in the retina, delaying sleep onset and reducing deep sleep quality. Redder, dimmer light in the evening allows the natural circadian rise of melatonin.

Personal experience

I used to do which is put red lights in the bedroom and slightly less bright lights in like the living room and the kitchen... and now all the light bulbs are the same and I can just flip them off and flip them on to get the type of light that I want

modern LED artificial light the flicker it produces the EMF it produces it can cause a little bit of a brain drain by the end of the day

Place a HEPA air filter in the kitchen to capture cooking particulate

WhatInstall a standalone HEPA air purification unit (like Jasper) in the kitchen, and run it during and after cooking to reduce PM2.5 levels.
WhenWhenever cooking, especially with high-heat methods like frying, baking, or sautéing.
DoseContinuous during cooking and for a period afterward until PM2.5 reading returns to baseline.
For whomAnyone who cooks at home, particularly in poorly ventilated kitchens.
WhyCooking generates significant airborne particulate matter that can worsen indoor air quality by several hundred percent, potentially causing respiratory and cardiovascular stress.
CaveatsUnits with PM2.5 readout help verify effectiveness; ensure the filter is HEPA and appropriately sized for the kitchen.

Ben details his experience with Jasper filters, which originated from the mold remediation industry and feature a real-time PM2.5 display. He was shocked to see particulate counts jump from 3 to 40 during routine baking. He emphasizes that typical range hoods are too high above the cooktop to capture contaminants effectively. Since adding the filter, he noticed a difference in how fresh the air smells after cooking and believes it is a crucial layer of defense alongside water filtration and light hygiene.

Personal experience

I got one I put it in the kitchen and the readout during cooking went from 3 up to like 40

the overhead fan when you're cooking doesn't do a great job because they're typically too far above the grill or the oven of reducing a lot of the toxins that build in up in the home during cooking

Drink hydrogen water as a selective antioxidant

WhatDissolve hydrogen tablets in water or use a hydrogen water bottle; drink a large glass in the morning and again in the afternoon.
WhenMorning upon waking and mid-afternoon.
DoseOne large glass each time; no specified milligrams.
For whomActive individuals and exercisers who want antioxidant support without compromising training adaptations.
WhyProvides potent antioxidant effects that reduce inflammation without blunting the adaptive hormetic response to exercise, unlike vitamin C or E.
CaveatsHydrogen gas dissipates quickly, so drink immediately after generating. Some bottles may not produce high enough concentrations; Ben recommends tablets as more reliable.

Ben explains that molecular hydrogen is a unique selective antioxidant because it only targets the strongest and most damaging free radicals like hydroxyl radicals while leaving beneficial signaling molecules intact. This means it can lower systemic inflammation and improve recovery without the downside of blunting mitochondrial biogenesis and muscle gain post-exercise. He compares it to methylene blue, which also exhibits selective antioxidant properties and is often used for cognitive enhancement. He's recently delved into the research and integrated it daily.

Mechanism

Hydrogen gas (H2) selectively reduces cytotoxic hydroxyl radicals (•OH) and peroxynitrite (ONOO−) but does not react with superoxide or hydrogen peroxide, preserving redox-sensitive pathways for mitochondrial biogenesis and antioxidant enzyme upregulation.

Personal experience

I've been doing a big glass of hydrogen water when I wake up and then again in the afternoon and it's a it's a very very good antioxidant but it's a selective antioxidant so it's okay for people who exercise a lot to to drink on a regular basis

there's only two anti toxins I know of that help to quell inflammation without shutting down the response to exercise one is hydrogen... and the other one is called methylene blue

Natural testosterone optimization stack and lifestyle

WhatLift heavy weights emphasizing legs (deadlifts, squats, leg press), get sunlight, manage stress, maintain good relationships and sex life, and supplement with creatine, zinc, boron, fish oil, magnesium, and vitamin D. Get a Dutch dried urine hormone panel before considering interventions.
WhenConsistently over weeks to months; testing before any TRT decision.
DoseNo specific supplement dosages given; follow label or work with a practitioner.
For whomMen with symptoms of low testosterone, especially those over 40, but younger men should focus on lifestyle first.
WhyAddresses the major lifestyle and nutritional factors that commonly suppress testosterone; testing identifies whether low T is driven by stress (high cortisol), nutritional depletion, or HPA axis dysfunction.
CaveatsTesting is crucial: a simple blood test may miss upstream hormone issues; the Dutch test reveals pregnenolone steal and other metabolic patterns. For those with high cortisol, stress management must be addressed before adding hormones.

Ben lays out a tiered approach. First, train heavy with lower body because androgen receptors are concentrated in the legs. Second, ensure adequate nutrition with key cofactors: creatine supports ATP and androgen receptors, zinc and boron are direct testosterone precursors, fish oil reduces inflammation, magnesium aids sleep and steroidogenesis, vitamin D is a steroid hormone precursor. Third, he strongly recommends the Dutch dried urine test because it shows not just hormone levels but also metabolites, revealing whether low testosterone is due to adrenal burnout (pregnenolone steal) or primary testicular issues. Only after these are optimized and tested should medical interventions be considered.

Mechanism

Leg training increases systemic growth hormone and testosterone secretion via large muscle motor unit recruitment. Zinc acts as a cofactor in testosterone synthesis; boron increases free testosterone by reducing sex hormone-binding globulin. The Dutch test measures phase I and phase II cortisol metabolites, androgen metabolites, and melatonin, giving a full circadian picture of adrenal and gonadal function.

the main things you should get tested for or introduce prior to considering testosterone therapy are vitamin D creatine magnesium electrolytes fish oil Boron and zinc

Also said
“if you've got really low testosterone and really high cortisol then I know that part of your low testosterone issues could be due to what's called a pregnanolone steel”— Explains a specific diagnostic pattern that testing can reveal

Consider enclomiphene before TRT to preserve fertility

WhatUse enclomiphene, a selective estrogen receptor modulator (SERM), as a pharmacological alternative to exogenous testosterone to raise T levels without shutting down fertility or shrinking testes.
WhenBefore committing to testosterone replacement therapy, especially for men who want to maintain fertility or testicular function.
DoseNot specified; must be managed medically with regular monitoring.
For whomMen with secondary hypogonadism (low LH/FSH) who wish to avoid the side effects of traditional TRT, or those who want to use lower doses of TRT in combination.
WhyStimulates the body's own testosterone production by blocking estrogen feedback at the hypothalamus/pituitary, thus increasing LH and FSH, unlike TRT which suppresses them.
CaveatsRequires a prescription and monitoring; not suitable for primary testicular failure. Must be managed to avoid excessive estrogen blockade.

Ben positions enclomiphene as a 'less of a sledgehammer' option compared to straight testosterone injections. He notes that many guys jump to TRT without addressing underlying hypothalamic-pituitary issues. Enclomiphene tricks the body into ramping up its own production, often restoring levels to the normal range while preserving fertility. It can also be used in combination with TRT to allow lower external doses. He views this as a critical step in the decision tree before fully committing to TRT.

Mechanism

Enclomiphene is a non-steroidal estrogen receptor antagonist in the hypothalamus. By blocking estrogen's negative feedback, it increases gonadotropin-releasing hormone (GnRH) pulses, leading to higher LH and FSH secretion, which stimulates endogenous testosterone and sperm production.

en chopine... can help to increase testosterone without impacting fertility ball size Etc I would say in chopine would be towards the top of the totem pole of something that could be used prior to testosterone replacement therapy

TRT via low-dose transdermal scrotal cream twice daily

WhatIf opting for TRT, use a prescription testosterone cream applied to the scrotum in the morning and evening to mimic the natural diurnal rhythm, rather than large-dose injections.
WhenMorning and evening daily, under medical supervision with blood/urine testing every three months.
DoseCream concentration and amount must be customized; start low.
For whomMen definitely finished having children (or combined with enclomiphene if fertility desired) who have been thoroughly tested and haven't improved with lifestyle and nutrient optimization.
WhyAvoids the supraphysiologic spikes of injections that cause estrogen and DHT surges, mood swings, and hair loss; replicates the body's natural twice-daily testosterone secretion pattern.
CaveatsWash hands thoroughly after application to avoid transferring to others (especially women and children); a female dose is 1/200th of the male dose. Regular monitoring of total T, free T, estradiol, DHT, and cortisol is essential.

Ben strongly criticizes standard once- or twice-weekly injection protocols because the large boluses cause exaggerated aromatization to estrogen and 5-alpha-reductase conversion to DHT, leading to common complaints like acne, hair loss, and emotional volatility. Cream allows for smoother pharmacokinetics. He also notes that if a male partner applies the cream shortly before sex, it can act as a libido enhancer for the female partner (but cautions about the extreme dose discrepancy). He personally started this approach a couple of years ago.

Mechanism

Transdermal application via the scrotal skin, which is highly vascular and permeable, allows for steady absorption, avoiding the first-pass metabolism and providing more consistent serum levels. Mimicking the circadian pattern supports physiological function of the androgen receptor.

Personal experience

I personally started Ed doing this a couple of years ago a small amount of testosterone cream app applied scrotal in the morning and in the evening so you're naturally mimicking what the body would produce on a daily basis

a large bolus of testosterone injected once or twice per week in no way mimics the natural dial variation of testosterone that a male experiences

Also said
“the only risk with that you need to wash your hands well afterwards you don't want your you know nine-year-old girl to start growing a mustache”— Highlights a critical safety precaution for transference

What's new

Personal practice updates, fresh positions, predictions

3 items

Personal shift from high-dose psychedelics to microdosing and spiritual disciplines

After years of deep experimentation with psychedelics, Ben now views high-dose journeys as spiritually dangerous and has replaced them with fasting, prayer, and journaling, while endorsing only microdosing.

Why this matters: Contradicts his earlier public persona and the current mainstream enthusiasm for therapeutic macrodosing; he now frames it as playing with spiritual fire.

Background

Historically, these compounds were guarded by shamans and priesthood, but recent recreational and therapeutic use has exploded. Ben spent eight years in the psychedelic space and saw many positive transformations, but also witnessed severe psychological harm including schizophrenia-like episodes and spiritual crises.

Ben explains that high doses open a spiritual portal, leaving the user extremely vulnerable to influence and what he believes can be literal entity possession. He ties this to the Biblical word 'pharmakeia,' which he interprets as divination with the spirit world through drugs. For every nine people who benefit, he estimates one person develops lasting issues. He now advocates stoic, drug-free modalities like breathwork, cold exposure, sauna, and prayer, which require more effort but are far safer. He personally has not touched high doses in a long time and only uses microdoses for cognitive support, akin to having one glass of wine versus two bottles.

Personal experience

I've probably tried every drug known to humankind... I think I would have been way better served just like fasting in the wilderness with a journal on my knees in prayer every morning which is what I do now. I haven't touched these things in a long time besides microdosing which I think is an appropriate use for something like you know psilocybin or LSD.

I think I would have been way better served just like fasting in the wilderness with a journal on my knees in prayer every morning which is what I do now.

Also said
“the definition of the word pharmakeia in the Bible is using drugs to divine with the spirit world and it's not that it's forbidden because it's not beneficial it's forbidden because the risks can outweigh the benefits”— Provides the spiritual and etymological rationale for his stance
“for every nine people I've seen really transform themselves... there's like one person who develops things like schizophrenia or bipolar or gets a little weird or freaked out”— Quantifies the risk ratio that led him to change his view

Adoption of hydrogen water as a daily selective antioxidant

Recently began drinking a large glass of hydrogen water upon waking and again in the afternoon to reduce inflammation without blunting exercise adaptations.

Why this matters: Identifies hydrogen as one of only two antioxidants (along with methylene blue) that doesn't suppress the beneficial stress response to exercise.

Background

Standard antioxidants like vitamin C and E taken post-exercise can blunt mitochondrial biogenesis and muscle growth. Hydrogen, however, acts selectively, quenching harmful oxidative stress while preserving the adaptive signaling needed for fitness gains.

Ben noted that he has been digging into the research on molecular hydrogen and now incorporates hydrogen water into his daily routine. The mechanism relies on hydrogen's ability to act as a signaling molecule that selectively neutralizes the most damaging hydroxyl radicals without interfering with the reactive oxygen species that trigger beneficial pathways like NRF2 and PGC-1α. He contrasts this with typical antioxidants, which indiscriminately scavenge free radicals and can therefore hinder recovery adaptions. He also mentions methylene blue as another selective antioxidant option, though his focus here is on hydrogen.

Personal experience

I've just dug recently into a lot more of the research on hydrogen and I've been doing a big glass of hydrogen water when I wake up and then again in the afternoon.

it's okay for people who exercise a lot to to drink on a regular basis

Also said
“normally if you say take antioxidants after exercise like vitamin C or vitamin E they'll blunt your exercise response... there's only two anti toxins I know of that help to quell inflammation without shutting down the response to exercise one is hydrogen... the other one is methylene blue”— Explains the unique advantage of hydrogen over conventional antioxidants

Installation of Jasper commercial-grade HEPA filters after learning about cooking emissions

After interviewing an expert, Ben placed Jasper air purifiers throughout his home, especially the kitchen, and observed PM2.5 levels spike from 3 to 40 during cooking.

Why this matters: Highlights a largely ignored source of indoor pollution (cooking) and a concrete solution with quantified results.

The guest informed Ben that indoor air quality can decrease by hundreds of percentage points during cooking. Skeptical at first, Ben verified this when his wife was simply baking dinner and his office purifier's PM2.5 reading jumped from 3 to 10. Placing a unit directly in the kitchen showed a leap to 40. He notes that typical overhead fans are too far from the cooking surface to effectively remove particulate matter. This experience led him to advocate standalone HEPA units specifically for kitchen use, which he found made a noticeable difference in freshness of scent and overall air quality post-meal.

Personal experience

I noticed when I walked into my office the day after I interviewed him and my wife was making dinner upstairs... the readout on my screen had jumped from three up to 10... I put it in the kitchen and the readout during cooking went from 3 up to like 40.

the indoor air quality can decrease by like hundreds of percentage points

Also said
“the overhead fan when you're cooking doesn't do a great job because they're typically too far above the grill or the oven of reducing a lot of the toxins”— Identifies why conventional kitchen ventilation is insufficient

Recommendations

Products, supplements, and tools mentioned in the episode

5 items

Jasper HEPA air purifier

Product

Ben mentioned using these in his home after interviewing an expert. They originated from the mold remediation industry and include a real-time PM2.5 readout.

These commercial-grade units, now available for consumers, provide high-performance filtration and live air quality feedback. Ben placed multiple units in his house, with particular emphasis on the kitchen, where he observed PM2.5 spiking from 3 to 40 during cooking. He notes they are superior to centralized HVAC filters and typical overhead vents.

vs alternatives

He compares them to built-in HVAC filtration and standard range hoods, which he says are insufficient for the particulates generated during cooking.

Personal experience

I'm using these air filters called uh Jaspers... they have a readout on the screen that tells you the PM 2.5... I noticed when I walked into my office the day after I interviewed him and my wife was making dinner upstairs... the readout on my screen had jumped from three up to 10

it's a really really good like commercial grade HEPA a filtration unit that originally came out of the mold remediation industry

Find Jasper

Bond Charge and Block Blue Light circadian bulbs

Product

These are light bulbs that change brightness and spectrum with consecutive on/off toggles, allowing a single fixture to serve as daytime, evening, and sleep-mode lighting.

Ben highlighted them as a recent discovery that simplifies his previous practice of manually installing different bulbs in each room. By toggling the light switch, users can cycle through daytime (bright, cool), evening (warmer, dimmer), and full nighttime (red/amber) modes without needing smart home systems.

vs alternatives

Simpler than using multiple sets of specialized bulbs or app-controlled smart bulbs; relies on physical toggle.

Personal experience

these are kind of new but there's two companies one called Bond charge and one called block blue light and they make light bulbs that you put into your light bulb can and if you turn the switch on once it'll go daytime mode... I can just flip them off and flip them on to get the type of light that I want

they make light bulbs that you put into your light bulb can and if you turn the... switch on once it'll go daytime mode turn it off turn it on again it'll go evening mode turn it off turn it on again it'll go full on sleep nighttime mode

Find Bond

Mobi stainless steel water bottle (doubles as foam roller)

Tool

A large, hard stainless steel bottle with ridges that can be used as a foam roller for myofascial release while traveling.

Ben carries this empty through airport security and fills it at filtered water stations. After arriving at a hotel or Airbnb, he uses it to roll out his back. He complements this by ordering glass-bottled water in bulk via Instacart or Amazon to avoid plastic.

vs alternatives

More portable and multi-functional than a standard water bottle; avoids single-use plastic and the high cost of airport bottled water.

Personal experience

I got a stainless steel um it's called a Mobi bottle I think and I like it because it's also double is a foam roller... I just save myself a lot of money in the airport I go with stainless steel water bottle

it's one of those hard big stainless steel bottles with some ridges on it so I can foam roll my back

Find Mobi

Blind Spots by Marty Makary

Book

Ben references this book to support his argument that early exposure to potential allergens (like peanuts, gluten) reduces later allergies and that dietary variety strengthens the gut.

The book debunks the myth that withholding allergenic foods from children prevents allergies. Ben uses this as an analogy for adults: restricting foods leads to a weaker, less diverse microbiome.

Personal experience

I just read it... Marty Makary he goes into this kids who are given Trace Amounts of peanuts early in life... they grow up less prone to have allergies

it is uh blind spots it's book called blind spots by Marty Makary

Find Blind

Dutch dried urine hormone test

Service

Recommended as the most insightful hormone panel before considering TRT, because it maps upstream and downstream metabolites rather than just serum levels.

The Dutch test provides a circadian snapshot of cortisol and androgen metabolites, helping distinguish between adrenal burnout, pregnenolone steal, and primary hypogonadism. Ben has most of his coaching clients complete this panel along with genetic, stool, and food allergy panels.

vs alternatives

Serum blood tests give only a single point in time and don't reveal metabolic pathways; salivary tests offer circadian data but lack the broad metabolite panel of Dutch.

Personal experience

this is what I have most of my clients do it's a dried urine test for hormones gives you a very accurate snapshot of not just what your levels of hormones are but what the upstream and downstream metabolites of them are

there's a test called The Dutch test... gives you a very accurate snapshot of not just what your levels of hormones are but what the upstream and downstream metabolites of them are

Find Dutch
Disclosed sponsorships1speaker disclosed

Fit Soul and Indor

Book Sponsored · disclosed

Recommended for listeners who want a deeper dive into the spiritual arguments against recreational psychedelics and the stoic practices he now employs.

DisclosureWritten by Ben Greenfield; his more spiritually oriented books.

These books delve into the spiritual dangers he perceives in psychedelics and provide alternative frameworks for personal growth through prayer, fasting, and nature immersion.

a book called fit soul and another one called indor where I delve into a lot of this stuff also they're two of my more spiritually oriented books

Find Fit

Notable quotes

Lines worth pulling out — contrarian, specific, or perfectly phrased

6 items
I tell people if you were to walk up to me at the county fair and offer me like a stick of cotton candy or a corn dog I'd have a stick of cotton candy 10 times out of 10 because that's just carbohydrate and sugar and I can walk around and burn it off and you know go to the gym later that day or whatever but the vegetable oil and the corn dog the Frieds in the corn dog will stick around in my body for months and months and is what is used to comprise my cell membranes
Vividly illustrates his hierarchy of food harms, placing oxidized oils above pure sugar.
I think I would have been way better served just like fasting in the wilderness with a journal on my knees in prayer every morning which is what I do now
Candid personal transformation from psychedelic explorer to disciplined spiritual seeker.
the definition of the word pharmakeia in the Bible is using drugs to divine with the spirit world and it's not that it's forbidden because it's not beneficial it's forbidden because the risks can outweigh the benefits
Succinctly frames his theological and risk-based objection to macrodosing.
fried foods are one of the worst because the vegetable oil that is heated up can become very oxidized and rancid and those oxidized compounds can stick around in your body for up to a couple of years
Provides a shocking, memorable time scale for the persistence of dietary toxins.
if you have a so-called princess gut a lot of times you can stay super safe and say well I'm just going to go carnivore... but the problem is the more you limit the less diverse your microbiome becomes the more of a princess gut you get
Catchy and counterintuitive take that restrictive diets can worsen gut sensitivity.
what gets measured gets managed what gets written down gets implemented
Synthesizes his philosophy of self-quantification and actionable learning from podcasts.

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Topics covered

movement-at-workbdnfancestral-healthcomfort-crisisglp1-drugsobesity-epidemicblue-zones-dietmediterranean-dietdietary-varietymicrobiome-diversityallergy-preventionsoaking-grainssproutingfermenting-foodslectins-saponinsraw-dairyhomogenization-pasteurizationeating-out-strategiesbitters-digestionwine-pesticides
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Educational summary of the cited expert source — not medical advice. Open the source recording linked above and consult a qualified physician before acting on any protocol.