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Episode
It’s Not Toxins. It’s This
~11 min
Episode Brief·YouTube

It’s Not Toxins. It’s This

Eric Berg
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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

Selenium is the crucial trace mineral that activates glutathione, the body’s master antioxidant and primary detoxification enzyme.

2

The real problem behind feeling toxic is usually a weak detoxification system (low glutathione), not toxic overload.

3

Bile is the main elimination route for fat-soluble toxins; a sluggish thyroid from selenium deficiency impairs bile production and flow, causing backups.

4

Taking TUDCA, a bile acid, before a detox prevents liver pain, headaches, and right rib cage discomfort caused by toxin recirculation.

Protocols

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

5 items

Brazil nuts for selenium

WhatEat two Brazil nuts daily to meet selenium needs for glutathione activation and thyroid function.
WhenDaily
DoseTwo Brazil nuts per day
For whomAnyone wishing to boost detox capacity; particularly those with low selenium intake or symptoms of hypothyroidism, fatigue, brain fog.
WhyProvides the essential trace mineral selenium, which activates glutathione and supports thyroid hormone conversion, enabling detoxification.
CaveatsDo not exceed, as selenium in high doses can be toxic; Brazil nuts are very high in selenium. Stick to 2 nuts.

Selenium is a cofactor for the enzyme glutathione peroxidase, which is essential for glutathione's antioxidant function. The speaker emphasizes that glutathione is the body's master detoxification enzyme, and it cannot work without selenium. Additionally, selenium is needed for the deiodinase enzymes that convert the thyroid prohormone T4 into active T3. T3 drives bile production by the liver and gallbladder contraction. Bile is the primary vehicle for eliminating fat-soluble toxins via the stool. When selenium is insufficient, both glutathione and thyroid function falter, leading to bile insufficiency and toxin recirculation. Eating Brazil nuts is the simplest way to correct this because just two nuts supply roughly 200 mcg of selenium, far above the RDA. Eggs, organ meats, cruciferous vegetables, and seafood are also good sources. He notes that fish with high mercury often contain high selenium to neutralize the metal, illustrating selenium's protective role. The speaker mentions that in his own routine (which he says makes him feel 18 at 60), he likely incorporates selenium sources, but he does not detail a personal story with Brazil nuts specifically.

Mechanism

Selenium is incorporated into selenoproteins, including glutathione peroxidase, which reduces hydrogen peroxide and lipid hydroperoxides. This prevents oxidative damage to mitochondrial membranes and the electron transport chain. Selenium is also a component of thioredoxin reductase and iodothyronine deiodinases. Deiodinase type 1 and 2 convert T4 to T3. T3 binds thyroid hormone receptors in hepatocytes, upregulating cholesterol 7α-hydroxylase (CYP7A1), the rate-limiting enzyme in bile acid synthesis. T3 also enhances gallbladder contractility via cholecystokinin sensitivity. Thus, selenium enables both antioxidant defense and the production/flow of bile, creating a dual mechanism for toxin elimination.

Personal experience

The speaker alludes to his personal daily routine that helps him feel youthful, but he does not explicitly state he eats Brazil nuts. He mentions downloading his routine checklist.

All you really need is two Brazil nuts a day to get all of the selenium you need.

Also said
“Selenium… one of the most important things is the activation of glutathione.”— Direct link between selenium and glutathione activation.
“Eggs are another good source of selenium if they're high-quality eggs. Organ meats are another source. Cruciferous vegetables do have some selenium in them. Also, shellfish and certain seafood has selenium.”— Lists other food sources.

TUDCA pre-detox

WhatTake TUDCA (tauroursodeoxycholic acid) for a few days before starting a detox to ensure adequate bile flow.
WhenA few days before a detox protocol
DoseNot specified; as a supplement
For whomThose planning a detox, especially if they have a history of sluggish gallbladder, hypothyroidism, or symptoms of bile insufficiency.
WhyPrevents backup of toxins in the liver and gallbladder when releasing stored toxins, avoiding right rib pain, headaches, and shoulder pain.
CaveatsConsult a healthcare provider before use; ensure other supports (selenium, thyroid function) are optimized.

The speaker repeatedly warns that many individuals who attempt detoxification experience pain under the right rib cage and referred pain to the right neck and head because without sufficient bile, toxins released from fat stores get stuck in the liver. He advocates that before any detox, one should prepare the bile system. TUDCA is a water-soluble bile acid that improves bile fluidity and flow, helping to keep the biliary tract clear. This aligns with his overall message that detox is a capacity issue, not a toxin overload issue. He recounts seeing many people in videos and personal interactions who suffered this exact backlash from detoxes, emphasizing that bile must be supported. He also ties this to the thyroid: hypothyroidism reduces bile production, making pre-detox bile support even more critical.

Mechanism

Bile serves as the primary emulsifier and carrier for fat-soluble toxins, facilitating their excretion through the feces. TUDCA enhances bile flow by increasing the bile-acid pool and reducing the cytotoxicity of more hydrophobic bile acids, thereby protecting hepatocytes and promoting choleresis. The liver conjugates toxins with glucuronic acid or glutathione, making them more water-soluble for bile secretion. If bile flow is stagnant, these conjugated toxins can be reabsorbed, causing systemic symptoms. TUDCA ensures continuous flow, preventing hepatic congestion and referred pain patterns.

Personal experience

The speaker shares that he knows many people and has created content on individuals who experienced this exact scenario: 'So many people that I know and I've done videos on this, they do a detox without putting attention on bile and everything backs up in the liver and they have a lot of pain underneath their right rib cage.' He uses their experience to underscore the recommendation.

I highly recommend you either take some bile like something called Tudca maybe a few days before you do that detox. So, that way when you start releasing some of these toxins in the liver and they come out, you have enough bile to transport them out.

Also said
“They have a lot of pain underneath their right rib cage. And the pain refers up to their neck and their head. They get headaches, especially in the right side of the body.”— Describes symptoms of bile backup.

Animal meats for glutathione building blocks

WhatConsume animal meats, especially red meat, to supply the amino acids cysteine and glycine needed for glutathione synthesis.
WhenAs part of a regular diet
DoseNot specified; include in meals
For whomAnyone, particularly those on plant-heavy or low-protein diets who may be insufficient in these amino acids.
WhyGlutathione is a tripeptide made from glycine, cysteine, and glutamate; adequate dietary protein ensures precursor availability.

The speaker briefly notes that glutathione requires cysteine and glycine, which are abundant in animal proteins. He singles out red meat as a helpful source. This is part of his broader message that we should supply the raw materials to build internal detox capacity rather than rely on external detox products. He does not detail further.

It needs a couple amino acids like cysteine and glycine from animal meats, especially red meat can help you detoxify.

Maintain microbiome for bile production

WhatSupport a healthy gut microbiome to ensure adequate microbial bile salt production for detoxification.
WhenOngoing dietary practice
DoseNo specific regimen
For whomAnyone with gut issues, antibiotic use, or poor diet.
WhyGut microbes contribute to the bile salt pool; dysbiosis reduces bile availability, impairing toxin elimination.

He introduces the concept that there are two types of bile salts: liver-derived and microbe-derived. Up to 90% of bile is recycled, so microbial production is significant. He implies that a disrupted microbiome undermines this source, making detox less efficient. However, he gives no specific probiotics or foods to support this; it's a general awareness point.

You also have a lot of bile that is made by your own microbes lower in your digestive tract. … So, you have to look at the whole system and understand it.

Also said
“Another missing piece of the puzzle is not having enough of the right microbiome to make your bile.”— Reiterates the point.

Strengthen detoxification system over aggressive detoxes

WhatFocus on building the body's endogenous detox capacity (glutathione, bile, thyroid) rather than doing repeated harsh cleanses.
WhenAs a philosophy
For whomEveryone, especially those who feel worse after detoxes.
WhyMost people have a detox problem, not a toxin overload problem; supporting internal pathways prevents recirculation and symptoms.

This encapsulates the central thesis. He explains that without sufficient glutathione and bile, detoxes simply mobilize toxins that cannot be excreted, leading to reabsorption and feeling terrible. So instead, people should optimize their detox pathways with selenium, amino acids, bile support, and thyroid health.

You need to strengthen your detoxification system.

Also said
“Why not just build up your detoxification system with the right precursors so you have enough of the right antioxidant to deal with this overwhelming toxicity that we're living in.”— Summarizes the approach.

What's new

Personal practice updates, fresh positions, predictions

4 items

detox-failure-paradigm

Most detox issues stem from the body's inability to eliminate toxins (low glutathione) rather than an overwhelming toxin load.

Why this matters: Challenges the popular fixation on reducing exposure, advocating internal system support instead.

Background

Conventional detox advice often centers on avoiding toxins or undergoing harsh cleanses, but the speaker argues this misses the root cause: a compromised endogenous detox pathway.

He explains that the body's detox capacity depends on glutathione, the master antioxidant, which requires selenium for activation. When glutathione is low, toxins cannot be exported and recirculate, causing fatigue, brain fog, headaches, and inflammation. Therefore, he says strengthening the detox system with precursors like selenium and amino acids is more effective than repeated detoxes.

The big mistake that people make with detoxification is they have this idea that I have too many toxins. I'm overloaded with toxins. No, that's not usually the problem. The problem is you have a detoxification problem.

Also said
“When glutathione is low, toxins do not leave your body. They get stuck and then they recirculate and this is why people get tired.”— Describes the symptoms of low glutathione.
“So, the person is literally bathing in these toxins and it's just recirculating and they feel very, very toxic. And especially tired.”— Emphasizes the feedback loop of toxicity perception.

glutathione-prevents-damage

Glutathione prevents oxidative damage from occurring, unlike most antioxidants that clean up after the fact.

Why this matters: Reframes glutathione as a proactive shield for mitochondria and cell membranes, not just a cleanup crew.

Background

Many antioxidants neutralize free radicals once they've already done harm; glutathione intercepts reactive species like hydrogen peroxide before they cause cellular damage.

He describes that glutathione neutralizes hydrogen peroxide, a corrosive compound produced by the body to kill microbes, and prevents lipid peroxidation in mitochondrial and cell membranes. This protective role is especially crucial for the mitochondrial electron transport chain where ATP is made. Without glutathione, toxins disrupt energy production, leading to fatigue and mitochondrial dysfunction, a core issue in diseases like cancer.

A lot of them clean up the damage after the damage has been done. But glutathione is preventing the damage from occurring in the first place. Very different.

Also said
“Glutathione protects the mitochondria more than just about everything. So, it will neutralize things like hydrogen peroxide.”— Specific example of its preventive action.
“The specific area that these toxins attack on the mitochondria is this thing right here, the electron transport chain. … That's where a lot of toxins mess up your energy.”— Explains mitochondrial vulnerability.

microbiome-produces-bile

Gut microbes also produce bile salts, making a healthy microbiome essential for full bile-dependent detoxification.

Why this matters: Expands the bile story beyond liver and gallbladder, highlighting a second source often ignored.

Background

Most people know bile is made in the liver; the speaker introduces that a significant portion is produced by microbes in the lower digestive tract, which then gets recycled (enterohepatic circulation).

He says there are two types of bile salts: those made by the liver and those made by intestinal microbes. About 90% of bile is recycled. If the microbiome is unhealthy, microbial bile production drops, compromising the ability to flush toxins out. This ties detox capacity to gut health, which he suggests is an often-overlooked piece of the puzzle.

Also realize there's two types of bile salts. You have the bile that's made by your liver, but you also have a lot of bile that is made by your own microbes lower in your digestive tract.

Also said
“And so, microbes make bile, too. And then the whole thing gets recycled. You recycle like 90% of your bile.”— Emphasizes the recycling and microbial contribution.

selenium-detox-mineral

Selenium is the critical trace mineral that activates glutathione and supports thyroid function, thus enabling bile flow and detox.

Why this matters: Elevates selenium from a thyroid support nutrient to a central player in detox, linking multiple systems.

Background

Selenium is commonly known for converting T4 to T3 thyroid hormone, but the speaker connects this to bile production and glutathione activation, making it the 'most important detoxification mineral'.

He explains that glutathione needs selenium to function; without it, glutathione is ineffective. Selenium's role in thyroid activation is essential because thyroid hormones drive bile synthesis and gallbladder contraction. Bile is the primary route for eliminating fat-soluble toxins. Low selenium therefore creates a cascade: reduced glutathione activity, low thyroid function, poor bile flow, toxin buildup, and symptoms like constipation and estrogen dominance. He also notes that modern soils are depleted of selenium, increasing the need for dietary sources.

Selenium… one of the most important things is the activation of glutathione.

Also said
“If the thyroid is under-functioning, it cannot make bile. If you cannot make enough bile and you don't get the flow of bile that goes down here, you cannot detoxify.”— Connects selenium to bile via thyroid.
“Modern-day soils just don't have near the amount of selenium that's needed.”— Highlights the deficiency risk.

Recommendations

Products, supplements, and tools mentioned in the episode

1 item

TUDCA (tauroursodeoxycholic acid)

Supplement

Recommended to take a few days before a detox to ensure bile flow and prevent toxin backup, liver pain, and headaches.

As detailed, TUDCA is a bile acid used to support bile fluidity. He sees it as essential preparation for any detox to avoid the common side effects of right rib cage pain and referred pain to the neck and head. He's seen many people suffer this.

Personal experience

He has witnessed many individuals (and created videos about them) experiencing these symptoms when they detox without bile support.

I highly recommend you either take some bile like something called Tudca maybe a few days before you do that detox.

Also said
“They do a detox without putting attention on bile and everything backs up in the liver and they have a lot of pain underneath their right rib cage.”— Reason for the recommendation.
Find TUDCA
Disclosed sponsorships2speaker disclosed

Dr. Berg Supplements

Product Sponsored · disclosed

When asked what supplements he recommends, he directs viewers to search 'Dr. Berg supplements' on Amazon.

DisclosureI have my own high-quality supplement line

A lot of people ask me, 'What supplements do I recommend?' Now, of course, I'm not biased. I have my own high-quality supplement line, but if you go to Amazon and type Dr. Berg supplements, you'll find more information.

Find Dr.

Dr. Berg's Daily Routine Checklist

Tool Sponsored · disclosed

A checklist of his daily routine that he uses to feel youthful at 60; likely includes practices that support detox capacity.

DisclosureFree download offered by the speaker

Personal experience

He says this routine is what he uses every day at age 60 to feel like he's 18.

This free download is my daily routine in a checklist. This is a routine that I use every day to feel like I'm 18 years old even though I'm 60 years old and I want to give it to you for free.

Find Dr.

Notable quotes

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

6 items
The big mistake that people make with detoxification is they have this idea that I have too many toxins. I'm overloaded with toxins. No, that's not usually the problem. The problem is you have a detoxification problem.
Pivotal reframe of detox mindset from overload to capacity.
Glutathione is preventing the damage from occurring in the first place. Very different.
Distinguishes glutathione as a preventive antioxidant, not just a repair molecule.
The most important function of glutathione is not to protect the liver. It's to protect the mitochondria.
Emphasizes mitochondrial protection as the top priority for detox and energy.
Bile is the primary route of how these toxins get eliminated through the intestinal tract.
Reinforces the centrality of bile in detox, often overlooked.
Modern-day soils just don't have near the amount of selenium that's needed.
Points to a systemic environmental deficiency driving detox and thyroid issues.
So many people that I know and I've done videos on this, they do a detox without putting attention on bile and everything backs up in the liver and they have a lot of pain underneath their right rib cage.
Strong anecdotal warning that validates the bile recommendation.

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Topics covered

glutathioneseleniumdetoxificationmitochondriaelectron-transport-chainbilethyroidbrazil-nutstudcamicrobiomeseed-oilsglutathione-synthesisantioxidantshydrogen-peroxidecysteineglycinegallbladderhypothyroidismfree-radicals
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