HoldsUp

Dr. Ford Brewer MD MPH · 2026-07-02 · Ford Brewer (host), Jesus Vega, Tom, Mark, James, Scape, Emily, Quinn, Stan, George

Don't Eat Junk Your Body Can't Handle

31 research-tied claims examined: 4 contradicted 2 overstated 4 context 16 supported 5 unverified

16

Supported by research

0:05:30Ford Brewer (host)supportedmoderate

Repeated glucose and insulin spikes wear down and damage the endothelial glycocalyx lining of artery walls, initiating plaque formation.

"Do that a few times a day, every day for a few years, and it wears down that inner lining of your artery wall, the glycocalyx. That's part of the endothelium. Think of it as that smooth inner surface of the pipe that your blood flows through. Those repeated spikes irritate it. They inflame it. They even damage it. When that inflamed, damaged wall is exactly where plaque starts to build." (said at 0:05:30)

The endothelial glycocalyx is a carbohydrate-rich, gel-like protective layer of proteoglycans and glycoproteins lining the luminal surface of vascular endothelial cells. Clinical physiological studies demonstrate that acute hyperglycemia causes rapid degradation and shedding of the glycocalyx layer via oxidative stress mechanisms. In human trials, acute experimental hyperglycemia halved systemic endothelial glycocalyx volume and led to endothelial dysfunction and coagulation activation. Destruction of the glycocalyx increases vascular permeability, facilitates low-density lipoprotein (LDL) infiltration, and permits leukocyte adhesion to the underlying endothelium, representing early initiating steps in atherosclerotic plaque formation.

0:24:35Ford Brewer (host)supportedmoderate

Cortisol or epinephrine release upon waking or exercising fasted causes the liver to release stored glucose into the bloodstream.

"When you wake up or when you have a cortisol effect, that cortisol or epinephrine, adrenaline that you get from walking or just from waking up and f after your fast. Both of those can cause you to release cortisol or epinephrine and those in turn can cause your liver to release blood sugar." (said at 0:24:35)

Physiological studies confirm that early morning waking and exercise during fasting stimulate counterregulatory hormones, including cortisol and epinephrine (adrenaline), which promote hepatic glucose output (via glycogenolysis and gluconeogenesis) into the bloodstream.

0:25:28Ford Brewer (host)supportedmoderate

The HbA1c test misses over half of insulin resistance or metabolic health problems.

"No, not an A1C. The A1C misses over half of this problem. I'm talking about where you get fasting glucose and fasting insulin, then you take the sugar, an hour later you get glucose and insulin, and then an hour after that you get glucose and insulin." (said at 0:25:28)

Large population-based studies confirm that standard HbA1c thresholds miss more than half of cases of dysglycemia detected by oral glucose tolerance tests (OGTT). In national cohort evaluations (such as NHANES data), standard HbA1c screening cutoffs had sensitivities of only ~25% to 35% for detecting diabetes and prediabetes compared with OGTT-based classifications, yielding false-negative rates exceeding 60% to 75%. Furthermore, HbA1c reflects average blood glucose rather than dynamic insulin secretion; individuals with early insulin resistance frequently maintain normal glycemic and HbA1c levels through compensatory hyperinsulinemia, which is only captured when dynamic glucose and insulin responses are measured.

0:31:55Ford Brewer (host)supportedmoderate

Approximately 90 percent of metabolic disease cases have not been diagnosed by typical healthcare providers.

"And Tom, it sounds like you know already 90% of this has not been diagnosed by by your doc, by the typical doc out there and the typical health care provider." (said at 0:31:55)

Nationally representative epidemiological data from the National Health and Nutrition Examination Survey (NHANES) consistently show that approximately 85% to 92% of adults with prediabetes—a primary marker of early metabolic disease—are unaware of their condition and have not received a formal diagnosis from a healthcare provider. For example, an analysis of NHANES data found that 92.0% of U.S. adults with prediabetes were unaware of their condition (PMID: 27612580), and an earlier NHANES analysis noted that only 4.8% of individuals meeting prediabetes criteria reported having received a formal diagnosis from their physician (PMID: 20724649).

0:34:24Ford Brewer (host)supportedmoderate

Surveys from institutions such as Johns Hopkins found that three-quarters of primary care doctors and cardiologists do not know how to diagnose metabolic disease or prediabetes.

"multiple surveys have been done from places like Hopkins, and what they found was three-quarters of the local doctor, your local doctor who the current administration is referring you back to, don't know how to diagnose this problem. Three-quarters of them—internists, family practitioners, cardiologists—don't know how to diagnose this problem." (said at 0:34:24)

Surveys led by researchers at Johns Hopkins Bloomberg School of Public Health and Johns Hopkins School of Medicine examined primary care providers' (PCPs') knowledge of prediabetes screening, diagnostic criteria, and management. In a survey of mid-Atlantic primary care providers (Tseng et al., 2017), only 17% of PCPs correctly identified the laboratory parameters for diagnosing prediabetes using both fasting glucose and HbA1c (meaning 83%, or over three-quarters, failed to identify the full diagnostic criteria). A subsequent national survey of US PCPs (Tseng et al., 2019) similarly demonstrated widespread knowledge gaps regarding prediabetes laboratory diagnostic criteria and screening guidelines.

0:36:40Jesus Vegasupportedmoderate

Repeated, continuous spikes of glucose and insulin cause arterial plaque formation.

"it's the continuous glucose spikes and insulin spikes what's causing the problem—the over and over and overexposure to high glucose and high insulin causing arterial plaque." (said at 0:36:40)

Substantial observational and mechanistic evidence confirms that repeated acute glucose spikes (glycemic variability) and elevated insulin levels (hyperinsulinemia) contribute directly to endothelial dysfunction, vascular inflammation, and the initiation and progression of arterial plaques. Continuous glucose monitoring and intravascular imaging studies show that acute glucose excursions provoke oxidative stress and correlate significantly with arterial endothelial damage, plaque instability, and coronary plaque vulnerability.

0:37:18Jesus Vegasupportedmoderate

Patients with diabetes typically experience a 5- to 7-year delay before receiving a formal diagnosis.

"To think about that for somebody who has diabetes you have to wait for five to seven years to get the diagnosis done, it's—I learned this word three weeks ago: preposterous." (said at 0:37:18)

Epidemiological models evaluating the prevalence and progression of diabetic retinopathy at the time of clinical diagnosis estimate that the asymptomatic onset of type 2 diabetes typically precedes formal clinical diagnosis by approximately 4 to 7 years (with refined models estimating an average delay of about 6 years).

0:55:28Ford Brewer (host)supportedmoderate

Half of all heart attacks occur in people with normal cholesterol levels.

"Half of all heart attacks happen in people with perfectly normal cholesterol." (said at 0:55:28)

A large observational study of 136,905 hospitalizations for coronary artery disease (including acute myocardial infarction) across 541 US hospitals found that almost half of patients admitted with CAD had low-density lipoprotein (LDL) cholesterol levels under 100 mg/dL, which was considered the standard optimal/normal threshold (Sachdeva et al., 2009). The mean LDL cholesterol level at admission was 104.9 mg/dL. While the majority of these patients had abnormal total lipid profiles when considering low high-density lipoprotein (HDL) cholesterol or high triglycerides, the assertion that roughly half of acute coronary events occur in individuals with normal or optimal LDL cholesterol levels is well-supported by observational registry data.

0:59:40Ford Brewer (host)supportedhigh

Beetroot and beetroot powder increase nitric oxide levels in the body.

"beetroot, a lot of people say, you know what, beets are great. They can help you actually increase your NO, nitric oxide." (said at 0:59:40)

Beetroot and beetroot products are rich in inorganic dietary nitrate (NO3-). Following ingestion, dietary nitrate is reduced to nitrite (NO2-) by commensal oral bacteria, which is then absorbed and further reduced to nitric oxide (NO) in the bloodstream and tissues through the enterosalivary nitrate-nitrite-NO pathway. Extensive randomized controlled trials and systematic reviews demonstrate that beetroot supplementation significantly elevates plasma nitrate and nitrite concentrations (the primary circulating biomarkers of nitric oxide production) and enhances nitric oxide bioavailability, leading to measurable physiological effects such as reduced blood pressure and improved vascular function.

1:00:25Ford Brewer (host)supportedhigh

Creatine supplementation converts to creatinine and can falsely suggest kidney failure on standard blood tests, whereas cystatin C testing avoids this artifact.

"creatine gets turned into creatinine and creatinine is how doctors measure the health of your kidneys. So sometimes people will take creatine, they increase their creatinine and their doctor thinks they're having kidney failure and that's not what's going on... And one of those is a cystatin C" (said at 1:00:25)

The speaker's claim is supported by randomized controlled clinical trial data. Creatine spontaneously degrades non-enzymatically into creatinine, which can raise serum creatinine levels and lead to a false clinical impression or misdiagnosis of renal impairment on standard creatinine-based tests. Using cystatin C (a marker independent of creatine intake and muscle mass) demonstrates normal glomerular filtration rate and confirms that renal function remains unaltered.

0:30:14Tomsupportedhigh

The USDA Dietary Guidelines recommend keeping saturated fat consumption to less than 10 percent of total daily calories.

"they're still recommending we eat four to five servings of fruits and vegetables and four servings of grains a day and keep our saturated fat to less than 10%?" (said at 0:30:14)

The claim is accurate. The USDA/HHS Dietary Guidelines for Americans consistently recommend limiting saturated fat intake to less than 10 percent of total daily calories.

1:03:28Ford Brewer (host)supportedhigh

Sleep apnea can occur in individuals with a normal BMI, including a BMI of 21.

"And you don't have to be fully overweight or obese to be dealing with sleep apnea... I had sleep apnea when my BMI was 21." (said at 1:03:28)

Obstructive sleep apnea (OSA) is not restricted to overweight or obese individuals and commonly occurs in people with a normal body mass index (BMI). An individual participant data meta-analysis of 12,860 adults across four community-based cohorts found that approximately 23.5% of adults diagnosed with OSA were normal weight or underweight (BMI < 25 kg/m²). In non-obese individuals, OSA is frequently driven by non-adipose factors, such as craniofacial skeletal morphology and airway anatomy.

1:10:42Ford Brewer (host)supportedhigh

Colchicine is an anti-inflammatory drug identified through Harvard research by Paul Ridker to reduce cardiovascular risk.

"colchicine is clearly an option. It's an it's an anti-inflammatory. And uh some very smart people uh Paul Ridker, Gavin Blake up at Harvard noticed that that statins actually are anti-inflammatories. So they went down this whole research train for the for the next 30 years looking at anti-inflammatories to see if they can decrease risk. Sure enough, that's how colchicine came up." (said at 1:10:42)

Substantial clinical trial and review evidence demonstrates that low-dose colchicine is an anti-inflammatory therapy that significantly reduces major adverse cardiovascular events (MACE) in patients with coronary artery disease and after myocardial infarction, leading to FDA approval for cardiovascular risk reduction. This development directly followed decades of research—spearheaded by Paul Ridker, Gavin Blake, and colleagues at Harvard and Brigham and Women's Hospital—establishing the inflammatory hypothesis of atherosclerosis and showing that statins and dedicated anti-inflammatory drugs confer cardiovascular protection by reducing vascular inflammation.

1:17:35Ford Brewer (host)supportedhigh

Gentle, slow walking in Zone 2 or below decreases blood sugar and blunts glucose spikes.

"just taking a gentle, slow walk. So, getting back to zone two or even less, you know, a gentle walk will often help you decrease that blood sugar and keep it down" (said at 1:17:35)

Randomized controlled trials and meta-analyses consistently demonstrate that gentle, light-intensity walking (or light activity performed at low aerobic intensities, such as Zone 2 or lower), especially when performed after a meal or to interrupt prolonged sitting, significantly lowers postprandial blood glucose levels and blunts glucose excursions compared to remaining seated or inactive.

1:14:45Ford Brewer (host)supportedhigh

Performing additional coronary procedures has been proven not to prevent heart attacks in stable patients.

"Then my question is, okay, we know that doing more procedures has been demonstrated it doesn't prevent a heart attack. What are you trying to cure at this point?" (said at 1:14:45)

Large-scale randomized controlled trials have demonstrated that in patients with stable ischemic heart disease, routine coronary revascularization (such as percutaneous coronary intervention [PCI] or coronary artery bypass grafting [CABG]) added to guideline-directed optimal medical therapy does not reduce the incidence of myocardial infarction or all-cause mortality compared to optimal medical therapy alone. The primary benefit of revascularization in this population is symptom and angina relief rather than the prevention of future heart attacks or death.

1:33:20Jesus Vegasupportedmoderate

Cardiac imaging scans can simultaneously assess both myocardial perfusion and plaque characterization to identify plaque type.

"I don't think both assessments are opposite, like you can have both the perfusion, but you can also have the plaque characterization where you know what type of plaque you have." (said at 1:33:20)

Contemporary non-invasive cardiac imaging, particularly comprehensive cardiac computed tomography (CCTA combined with CT myocardial perfusion imaging or CT-derived fractional flow reserve), enables the simultaneous evaluation of both functional myocardial perfusion/ischemia and anatomical vessel wall features. This includes plaque characterization such as identifying calcified, non-calcified, mixed, or high-risk low-attenuation plaque components in a single clinical session.

Unverified means no publication matching the claim was located; it does not prove the claim false. Spotted an error? See the corrections policy - disputes from the people quoted are prioritized.