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Episode
STOP Making These Blood Sugar Mistakes (Diabetics Need to Watch This)
~17 min
Episode Brief·YouTube

STOP Making These Blood Sugar Mistakes (Diabetics Need to Watch 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

Your entire blood volume normally contains only one teaspoon of sugar; pre-diabetes is 1.5 teaspoons, and full diabetes is just 2 teaspoons — a visual that highlights how tightly the body regulates glucose.

2

Thirteen common blood sugar testing mistakes (like not washing hands, using alcohol wipes that are still wet, squeezing the finger, or drinking coffee beforehand) can skew readings by 10–50 points, leading to false alarms or missed high readings.

3

Insulin resistance—not dietary sugar alone—drives type 2 diabetes: the liver becomes a sugar factory, making up to 80% of the glucose in a diabetic's blood, and doctors largely ignore insulin levels while managing only glucose with drugs like metformin.

4

Type 2 diabetes can be reversed quickly with a low-carb ketogenic diet plus intermittent fasting: liver fat drops by 50% in weeks, and some see normalization in as little as 10 weeks, yet 95% of doctors are hostile to low-carb advice.

Protocols

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

8 items

Wash hands with soap and water before finger prick

WhatThoroughly wash hands with soap and water and dry them before lancing the finger to test blood glucose.
WhenImmediately before every finger-prick blood sugar test.
For whomAnyone using a home glucometer.
WhyResidues like fruit juice or food particles on the skin can mix with the blood drop and falsely elevate the reading (pseudohypoglycemia).

The speaker highlights that even a small amount of juice from cutting fruit can drastically alter the reading, calling it 'pseudohypoglycemia.' He insists on soap and water rather than a quick rinse, and emphasizes drying the hands completely before testing. This simple step is often overlooked but can lead to misdiagnosis or incorrect insulin dosing.

Mechanism

Sugars from fruit, candy, or other residues dissolve into the blood sample, artificially raising the glucose concentration measured by the meter, which is calibrated for blood alone.

If you're eating some fruit and you cut some fruit and you get some juice on your fingers and that mixes with the blood sugar... it's called pseudohypoglycemia.

Also said
“It's really important to wash your hands with soap and water and let them dry and then you know test your ring finger or your index finger.”— Stresses method and target fingers.

Wait at least 30 seconds for alcohol to dry completely after using wipes

WhatIf using an alcohol wipe to clean the finger, wait a minimum of 30 seconds until the site is fully dry before pricking, and preferably use wipes without glycerin.
WhenBefore any test where an alcohol wipe is employed.
DoseWait at least 30 seconds.
For whomAnyone who uses alcohol wipes instead of soap and water.
WhyWet alcohol can react with the test strip chemistry, causing a falsely high reading by 10–40 points; glycerin in some wipes is sweet and also skews results.
CaveatsCheck wipe ingredients for glycerin.

The speaker notes that even a seemingly trivial amount of still-wet alcohol can boost the number by up to 40 mg/dL—enough to cause unnecessary concern or medication adjustments. He advises simply waiting until the skin feels dry, and recommends choosing wipes that list only alcohol and water without added glycerin.

Mechanism

Ethanol residue interferes with the electrochemical reaction on the test strip, leading to an overestimation of glucose. Additionally, glycerin (a sugar alcohol) can be read as glucose by the meter.

That can create a difference between 10 and 40 points going up. So wait at least 30 seconds for the alcohol to fully dry.

Also said
“Sometimes alcohol wipes had added glycerin which can also alter your blood sugar.”— Adds a hidden confounder in many commercial wipes.

Avoid milking or squeezing the finger for blood sample

WhatLet the blood drop form naturally with gentle pressure; do not squeeze or 'milk' the finger to force out blood.
WhenDuring the lancing process for a finger-prick test.
For whomAll glucometer users.
WhySqueezing forces interstitial fluid into the blood drop, diluting the glucose concentration and potentially lowering the reading by up to 30 mg/dL.
CaveatsIf circulation is poor, warm hands under water first rather than squeezing.

The speaker emphasizes that a gentle, natural drop is essential for accuracy. Many people instinctively squeeze to produce a larger drop, but this practice introduces significant error. He advises simply allowing the drop to form and then letting the strip's capillary action draw it in.

Mechanism

Interstitial fluid has lower glucose concentration than capillary blood. Mixing it with the blood sample dilutes the glucose, producing a falsely low number.

If you're squeezing or milking your finger, you're also squeezing the interstitial fluid and mixing that with the blood sugars, diluting the blood sugar, and that can alter your blood sugars by dropping by up to 30 points.

Use middle or ring finger for testing

WhatDefault to the middle or ring finger when obtaining a blood sample; avoid other fingers unless necessary.
WhenEvery blood sugar test.
For whomGlucometer users.
WhyDifferent fingers show variability in readings; the middle and ring fingers give more consistent results.
CaveatsIf using other fingers, be aware of potential variation.

I would use your middle finger and your ring finger. I wouldn't use the other fingers unless you absolutely had to because that can vary the results.

Wait 1–2 hours after a meal to test postprandial glucose (longer if using a CGM)

WhatFor post-meal blood sugar measurements, wait 1 to 2 hours after eating for a finger prick, and allow extra time if using a continuous glucose monitor (CGM) because of the lag in interstitial fluid readings.
WhenWhenever checking postprandial glucose.
Dose1–2 hours after meal for finger-prick; longer for CGM.
For whomPeople tracking their glycemic response to meals.
WhyImmediate post-meal readings miss the peak or are not comparable; CGMs measure interstitial fluid, which reflects blood glucose with a delay, so testing too early gives an inaccurate picture.
CaveatsConsistency in timing is key; always test at the same post-meal interval for trending.

The speaker points out that CGMs are indirect measures, so users must account for the delay. He also notes that sleeping on a CGM sensor can cause compression artifacts that affect morning readings. For reliable data, he recommends standardizing the testing window and not comparing finger-prick and CGM values at identical times.

Mechanism

After eating, blood glucose rises before it diffuses into interstitial fluid. A finger prick measures capillary blood almost instantly, while a CGM sensor in the interstitial space lags by 5–15 minutes, so a reading taken too soon after eating will underestimate the true blood glucose peak.

The continuous glucose meters measure things differently. They're measuring the interstitial fluid. So, they're measuring your blood sugars indirectly. If you're testing your blood sugar after a meal, you're going to see a delayed reaction versus the finger prick.

Also said
“If you're doing a postmeal test, you want to wait 1 to two hours, not before, not after. You have 1 to two hours and then do that consistently.”— Clarifies the precise timing window.

Avoid caffeine, vitamins, and Tylenol before a fasting blood sugar test

WhatDo not consume coffee, vitamin C, or Tylenol (acetaminophen) before a morning fasting glucose test; check blood sugar before taking any supplements or medications.
WhenIn the fasting state, typically upon waking.
For whomAnyone performing a fasting glucose test.
WhyCaffeine triggers adrenaline and cortisol release, raising glucose by up to 20 mg/dL; vitamin C can artificially increase readings by 30–50 points; Tylenol also elevates measured glucose.
CaveatsIf you must take medication, consult your doctor about timing; the effect may be temporary but can mask your true baseline.

The speaker advises testing first thing in the morning, before ingesting anything besides water. He emphasizes that even a cup of black coffee can confound the reading because of its hormonal effects, not just its calories. He recommends waiting until after the test to have coffee or take vitamins.

Mechanism

Caffeine stimulates the adrenals to release epinephrine and cortisol, both of which promote glycogenolysis and gluconeogenesis in the liver, increasing blood glucose. Vitamin C and acetaminophen may interfere with the glucose oxidase reaction on test strips, producing a falsely high electrical signal.

Don't even drink any coffee... because that can majorly affect it. Also, if you're taking Tylenol right before you test yourself... vitamin C can alter the blood sugar going up by 30 to 50 points.

Also said
“Caffeine can actually increase adrenaline and cortisol, which could indirectly cause your body to make more sugar by up to 20 points.”— Explains the hormonal mechanism behind coffee's effect.

Recognize dawn phenomenon as liver insulin resistance, not just morning cortisol

WhatIf your fasting blood glucose is high in the morning despite no food, understand that it reflects hepatic insulin resistance (the liver overproducing glucose) in addition to the natural morning cortisol spike.
WhenInterpretation of morning fasting glucose readings.
For whomPeople with elevated morning glucose, especially those with diabetes or pre-diabetes.
WhyAvoids unnecessary panic and points to the real target (liver fat and insulin resistance) rather than just blaming the cortisol surge.
CaveatsImprovement can take months even with a low-carb diet; persistent high readings indicate ongoing liver insulin resistance.

The speaker explains that many people are alarmed to see high fasting glucose after a 12-hour fast. He attributes this primarily to the liver acting as a 'sugar factory' due to insulin resistance. He reassures that as the liver heals on a low-carb diet, the dawn phenomenon gradually resolves, but it may take weeks to months. He advises taking a walk to burn off the excess glucose if you see a high morning reading.

Mechanism

The normal circadian rise in cortisol around 6–9 AM stimulates hepatic gluconeogenesis, but in healthy individuals this is a mild, regulated response. In insulin-resistant states, the liver is already overproducing glucose because insulin fails to suppress gluconeogenesis, so the morning spike becomes exaggerated.

In the morning, it's going to be high if you have insulin resistance... just realize that's insulin resistance of the liver.

Also said
“You have the highest spike of cortisol at that time... but more than that, it's a problem with insulin resistance in your liver and your liver is just making more sugar.”— Distinguishes between the cortisol component and the primary liver issue.

Low-carb ketogenic diet with intermittent fasting to reverse type 2 diabetes

WhatAdopt a very low-carbohydrate ketogenic diet combined with time-restricted eating (two meals a day or even one meal a day) to rapidly reduce liver fat and insulin resistance, thereby normalizing blood glucose.
WhenAs soon as diagnosed with pre-diabetes or type 2 diabetes; continue until metabolic health is restored—often weeks to a few months.
DoseIndefinite dietary change; some reverse diabetes in as little as 10 weeks. Keep carbs very low (ketogenic), eating only two meals or one meal per day.
For whomPeople with type 2 diabetes, pre-diabetes, or insulin resistance, and those wanting to prevent diabetes. Not intended for type 1 diabetics without medical supervision.
WhyBoth carbohydrates and frequent eating spike insulin. Drastically lowering carbs reduces insulin demand and allows the liver to shed fat; fasting extends the low-insulin window, accelerating the reversal of insulin resistance.
CaveatsMorning blood glucose may remain high initially due to the dawn phenomenon and could take months to fully normalize. Consult a physician before making drastic dietary changes, especially if on glucose-lowering medications, to adjust dosages.

The speaker argues that diabetes is fundamentally a liver problem. He claims the liver is at the core of the disease, generating 80% of the excess glucose in a diabetic's blood. By drastically cutting carbohydrates, 'the lower the carbohydrates in your diet, the faster the liver will respond by getting rid of fat off the liver and by correcting this insulin resistance.' Within weeks, he says, you can remove at least 50% of that liver fat. Adding intermittent fasting (two meals or even one meal a day) accelerates the process because it reduces the frequency of insulin spikes. He references reversal studies by Verta Health as credible evidence, though notes that mainstream medicine rarely uses the word 'reversal.' Additional supports include regular exercise, apple cider vinegar in water before meals (one tablespoon), berberine as a natural metformin alternative, and attention to sleep, stress, and sunlight. If morning blood sugar is high, he suggests a walk to burn off the glucose.

Mechanism

High carbohydrate intake and frequent eating chronically elevate insulin. Over time, liver cells become resistant to insulin's signal to store glucose, and hepatic gluconeogenesis becomes disinhibited, turning the liver into a glucose-producing factory. This also leads to fatty liver and worsening insulin resistance. A ketogenic diet drops insulin levels sharply, allowing hormone-sensitive lipase to mobilize liver fat for oxidation. Fasting prolongs the low-insulin state, increasing autophagy and cellular repair. As liver fat clears, insulin sensitivity returns and the liver stops overproducing glucose. The combination thus targets the root of type 2 diabetes.

Personal experience

The speaker implies extensive clinical observation, stating the reversal is 'incredibly easy' and that the liver responds fast. He directs viewers to his own detailed video on the ketogenic diet.

All you have to do to correct diabetes is to go on a lowcarb ketogenic diet with intermittent fasting because not only do carbs increase blood sugars and insulin, but also the frequency of eating.

Also said
“With a low carb diet, within weeks, you can take off at least 50% of that fat from that liver.”— Quantifies rapid hepatic improvement.
“Some people can reverse their diabetes in 10 weeks. Sometimes it's a little bit less. Sometimes it's a little bit longer.”— Gives a concrete timeline.
“Bourberine is a good natural alternative that acts like metformin.”— Offers a supplement option for those wanting a natural metformin-like effect.

What's new

Personal practice updates, fresh positions, predictions

4 items

Blood sugar quantity analogy: one teaspoon

The speaker illustrates that a healthy person's total blood sugar amounts to just one teaspoon, while pre-diabetes is 1.5 teaspoons and diabetes 2 teaspoons, despite people consuming 50–100 teaspoons daily via sugar and starch.

Why this matters: This visual reframes diabetes as a tiny absolute volume of sugar, underscoring how aggressively insulin must work to remove it and how little it takes to tip into pathology.

Background

Conventional education often focuses on blood glucose numbers (mg/dL) without giving a physical sense of the quantity. Patients may assume diabetes means large amounts of sugar pooling in blood.

The speaker explains that the body tightly regulates blood sugar because it is toxic in excess, so insulin acts as a 'vacuum cleaner' pulling sugar out and storing it as fat or glycogen. The average person ingests enormous amounts of sugar through both obvious sweets and hidden starches (which the body breaks down into sugar). Despite that, even a diabetic only holds about two teaspoons in the entire bloodstream at a given moment, because insulin is working overtime. The liver can also manufacture glucose from non-carbohydrate sources to maintain that crucial one teaspoon if you eat zero sugar. Thus, the disease is not about how much sugar you eat showing up directly—it's about the failure of the insulin system to clear it, and later the liver overproducing sugar. This sets up the entire argument that lowering carbohydrate intake and reducing insulin demand is the real solution.

In all of your blood, you should only have one little teaspoon of sugar.

Also said
“When you get into pre-diabetes, it's one and a half teaspoons of sugar. When you get into a full-blown diabetic state, it's only two little teaspoons of sugar.”— Quantifies progression.
“An average person consumes between 50 to over a hundred teaspoons of sugar every single day if you include the hidden sugars from starch.”— Shows the huge discrepancy between intake and blood level, highlighting insulin's workload.

Medical system ignores insulin and waits until diabetes is diagnosed

Doctors screen only blood glucose and wait until frank diabetes to prescribe medication, rarely testing insulin or recommending low-carb diets because 95% of them believe low-carb is dangerous.

Why this matters: This is a direct criticism of standard care, naming a specific percentage (95%) and accusing media propaganda of shaping medical advice.

Background

Typical diabetes management focuses on monitoring HbA1c and blood glucose, prescribing metformin or insulin, and handing out glucose tablets for hypoglycemia without addressing root causes.

The speaker argues that physicians are trained to manage the biomarker (blood sugar) rather than reverse the condition. They rarely order fasting insulin tests, which would reveal massively elevated insulin years before glucose rises. Instead, they wait until blood sugar is consistently high and then medicate, often advising patients to consume quick sugar if their glucose drops too low—showing more concern for acute lows than chronic highs. He states that 95% of doctors oppose low-carb diets, which he attributes to media-driven propaganda, and implies that this stance prevents patients from hearing about dietary reversal. He contrasts this with his view that type 2 diabetes is 'incredibly easy' to reverse with low-carb and fasting, and that medicine's negativity about reversal is unfounded.

Doctors are focused on blood sugars. They don't really test for insulin too much. They should because if they did test for that, they would find it's like off the charts.

Also said
“95% of doctors disagree with going on a low carb diet and they think it's dangerous mainly because of propaganda in media.”— Quantifies medical resistance and blames media.
“In medicine, they don't ever like to be very positive about putting anything in reversal, but there's a few great studies I'm going to put down below by Verta Health that talked about reversal and it's pretty credible.”— Acknowledges a rare exception and points to reversal evidence.

80% of a diabetic's blood sugar is made by the liver

Contrary to common belief that dietary sugar is the direct culprit, the speaker claims that once someone becomes diabetic, 80% of the glucose in their blood is manufactured by their own liver—not coming from food—because of disrupted signaling.

Why this matters: Shifts blame from diet to internal dysregulation, explaining why simply cutting sugar may not immediately fix high fasting glucose and why drugs like metformin target the liver.

Background

Patients are often told to avoid sugar, but they may still see high morning readings despite not eating. This fact explains the dawn phenomenon and liver insulin resistance.

The speaker describes that in diabetes, the liver becomes a 'sugar factory' because the hormonal messages are confused—it senses a lack of glucose and overproduces it even when blood sugar is already high. This is why metformin works by signaling the liver to stop making so much sugar. Because the liver is the primary source of excess glucose, dietary changes alone may not immediately normalize fasting blood sugar; it takes time to reverse the liver's insulin resistance. He ties this to the dawn phenomenon (high morning glucose) as a clear sign of hepatic insulin resistance. The good news, he says, is that the liver responds very rapidly to carbohydrate restriction, shedding fat and regaining insulin sensitivity within weeks.

When someone becomes a diabetic, 80% of the sugar in their blood is actually created or made by the liver. It's not coming from the diet. Only 20% comes from the diet, but most of it is coming from the liver.

Also said
“The liver is just making more sugar. It's like a sugar factory.”— Vivid metaphor for hepatic overproduction.
“Metformin is prescribed which indirectly lowers the blood sugar by telling the liver to stop making sugar.”— Connects the physiology to a common drug.

On keto, normal blood sugar can be 60–70 without hypoglycemia

The speaker asserts that after adapting to a low-carb/ketogenic diet, a person's fasting blood sugar can safely sit as low as 60 mg/dL (and even lower) with no hypoglycemic symptoms, because the body no longer depends on glucose as its primary fuel.

Why this matters: Challenges the standard medical view that blood sugar below 70 mg/dL is dangerous, and frames low readings as a sign of metabolic flexibility rather than pathology.

Background

Standard guidelines label blood sugar below 70 mg/dL as hypoglycemia and often advise immediate consumption of fast-acting carbs. The speaker argues this doesn't apply to fat-adapted individuals.

He explains that if the body is trained to run on fat and ketones, it does not need high levels of glucose, so the regulatory set point drops. He has observed blood sugars in the 60s or even lower in people on a ketogenic diet without any shakiness, sweating, or confusion—classic hypoglycemic symptoms—because their brains and tissues are efficiently using ketones. In contrast, a diabetic whose body is still glucose-dependent might feel hypoglycemic at 90 mg/dL. This underscores his recommendation to not panic over low readings on keto and to recognize that the body's fuel preference can shift, eliminating the need for constant sugar intake and reducing the risk of dangerous lows if managed properly.

Personal experience

The speaker mentions his own opinion: 'Personally, I think it should be 80 and then when you go on a low carb diet, that 80 will go down to a 70 and that'll be your normal or even 60 and I've even seen it even lower than that. And there's no hypoglycemic symptoms at all.'

If you train your body not to live on carbohydrates and you can live on fat and ketones, your body won't depend on all this extra sugar.

Also said
“When you go on a low carb diet, that 80 will go down to a 70 and that'll be your normal or even 60 and I've even seen it even lower than that.”— Provides specific numbers he's observed.
“If a diabetic has a blood sugar of 90, they might be experiencing the symptoms of hypoglycemia. Yet other people that are normal, like that might be even a little too high for them or that might be normal for them.”— Illustrates context-dependent normal ranges.

Recommendations

Products, supplements, and tools mentioned in the episode

4 items

Berberine

Supplement

A natural plant-based supplement that acts like metformin to help lower blood sugar by activating AMPK and reducing hepatic glucose production.

The speaker mentions berberine as a good natural alternative to metformin, but does not elaborate on dosage or side effects. He presents it as an adjunct to the low-carb diet and fasting, not a replacement.

vs alternatives

Compared to metformin, it is natural and may have fewer side effects, though the speaker does not provide a detailed comparison.

Bourberine is a good natural alternative that acts like metformin.

Find Berberine

Apple cider vinegar before meals

Practice

Take one tablespoon of apple cider vinegar diluted in water before meals to help moderate blood sugar spikes.

Apple cider vinegar in water diluted before meals, like one tablespoon.

Find Apple

Intermittent fasting (2 meals or 1 meal a day)

Practice

Reduce eating frequency to two meals a day or even one meal a day to prolong low-insulin periods and accelerate diabetes reversal.

The speaker states that not only carbs but the frequency of eating drives insulin resistance, so spacing out meals is crucial. He suggests even one meal a day can be very effective when combined with low-carb eating.

If we just have two meals a day or even one meal a day, boy, you're going to be good if you keep your carbs low.

Find Intermittent

Regular exercise

Practice

Consistent, regular exercise—especially a walk when morning blood sugar is high—to burn off glucose and improve insulin sensitivity.

Exercise, consistent, regular exercise. If your blood sugar is high in the morning, go for a walk and burn off that sugar.

Find Regular
Disclosed sponsorships1speaker disclosed

Low-carb ketogenic diet

Practice Sponsored · disclosed

The foundational dietary change required to reverse type 2 diabetes: drastically reduce carbohydrate intake to induce ketosis, lower insulin, and clear liver fat.

DisclosureThe speaker promotes his own educational video on the ketogenic diet at the end of the episode.

The speaker repeatedly emphasizes that the lower the carbs, the faster the liver sheds fat and insulin resistance corrects. He provides a dedicated video guide for implementation.

vs alternatives

Contrasts with the standard medical advice of managing blood sugar with medication while allowing significant carbohydrate intake.

The lower the carbohydrates in your diet, the faster the liver will respond by getting rid of fat off the liver and by correcting this insulin resistance.

Find Low-carb

Notable quotes

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

5 items
In all of your blood, you should only have one little teaspoon of sugar.
A striking, physical image that forever changes how one visualizes blood glucose levels.
80% of the sugar in their blood is actually created or made by the liver. It's not coming from the diet.
Subverts the common assumption that dietary sugar is the direct source of high blood glucose in diabetes.
The liver is just making more sugar. It's like a sugar factory.
A vivid, memorable metaphor for hepatic gluconeogenesis run amok.
95% of doctors disagree with going on a low carb diet and they think it's dangerous mainly because of propaganda in media.
A bold, specific claim about medical consensus and its purported manipulation.
If you train your body not to live on carbohydrates and you can live on fat and ketones, your body won't depend on all this extra sugar.
Encapsulates the metabolic flexibility argument that underlies the keto approach to diabetes.

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Topics covered

blood-sugar-normalinsulin-resistancedawn-phenomenonlow-carb-ketogenic-dietintermittent-fastinga1c-testblood-sugar-testing-mistakesmetforminberberineapple-cider-vinegarhypoglycemiatype-2-diabetes-reversalcaffeine-blood-sugarstress-cortisoldehydrationcontinuous-glucose-monitorpseudohypoglycemialiver-glucose-productionmedical-dogmaketo-adapted-blood-sugar
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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.