HoldsUp

FoundMyFitness · 2024-07-03 · Rhonda Patrick (host)

The Truth About Alcohol: Risks, Benefits, and Everything In-Between

174 claims checked against research: 8 contradicted 6 overstated 7 needing context 123 supported 30 unverified

8

Contradicted by research

0:36:00Rhonda Patrick (host)contradictedvery low

Alcohol consumption initially stimulates serotonergic neurons in the brainstem, specifically in the median raphe and dorsal raphe, to release more serotonin.

"Alcohol consumption initially causes an increase in serotonin due to its interaction with the brainstem serotonergic neurons, particularly in areas called the median raphe and dorsal raphe. These neurons are crucial because they project to parts of the brain that regulate our impulses, our motivation and reward systems, and our stress and anxiety responses. When you first drink alcohol, these serotonergic neurons are stimulated to release more serotonin, which contributes to the feel-good sensations often experienced in early drinking." (said at 0:36:00)

While acute alcohol administration increases extracellular serotonin concentrations in terminal projection regions (such as the caudate-putamen and nucleus accumbens), electrophysiological studies in animal models demonstrate that acute alcohol inhibits, rather than stimulates, the firing rate of serotonergic neurons in the dorsal raphe nucleus. Direct recordings show that acute ethanol reduces the spontaneous firing activity of dorsal raphe serotonin neurons by approximately 50%, likely mediated in part by autoinhibition via serotonin-1A autoreceptors in response to elevated local serotonin tone or terminal release/reuptake inhibition.

1:05:35Rhonda Patrick (host)contradictedlow

For carriers of one or two APOE4 alleles, zero drinks per day is associated with the lowest risk for neurocognitive diseases.

"Finally, if you're a carrier of one or two of the APOE4 alleles, zero drinks per day is associated with the lowest risk for neurocognitive diseases." (said at 1:05:35)

Published cohort evidence contradicts the claim that zero drinks per day is associated with the lowest risk of neurocognitive diseases for APOE4 carriers. In prospective observational studies, low-to-moderate alcohol consumption, compared with non-drinking, was associated with a reduced risk of incident dementia among both APOE4 carriers and non-carriers.

1:41:15Rhonda Patrick (host)contradictedhigh

The FOXO3A TT genotype has been consistently associated with human longevity and plays a protective role against oxidative stress, apoptosis, DNA repair, immune cell regulation, and stem cell maintenance.

"One gene known as Forkhead box O3A or FOXO3A has consistently been associated with human longevity. FOXO3A has a protective role against oxidative stress and is involved in apoptosis, DNA repair, immune cell regulation, carcinogenesis, and stem cell maintenance. Having a protective allele of this gene, or the TT genotype, could explain why people in the Blue Zones live longer despite their moderate alcohol consumption." (said at 1:41:15)

While FOXO3 (FOXO3A) variants are consistently associated with human longevity across multiple populations and meta-analyses, the speaker inverted the genotype. Meta-analyses and cohort studies show that the minor G allele (or G carriage) of the primary longevity SNP rs2802292 is the protective variant associated with extreme longevity and reduced disease mortality. In contrast, the TT genotype is the non-protective wild-type genotype associated with increased mortality and higher cardiometabolic disease risk.

2:07:48Rhonda Patrick (host)contradictedmoderate

In a pooled analysis of nearly 600,000 drinkers, the lowest risk for all-cause mortality was observed at an alcohol intake of around 100 grams (about seven standard US drinks) per week.

"The study also noted that the lowest risk for all-cause mortality and most cardiovascular diseases was observed at around seven drinks per week. Beyond this amount, no additional protective effects were seen, and importantly, lower alcohol intakes did not provide more benefits." (said at 2:07:48)

The statement bundles two claims regarding the 2018 Lancet pooled analysis of 599,912 current drinkers across 83 prospective studies. While the study did find that the threshold for the lowest risk of all-cause mortality was around or below 100 g of alcohol per week (approximately 7 standard US drinks of 14 g each), the claim regarding cardiovascular diseases is contradicted. The authors found that for most cardiovascular disease subtypes (including stroke, coronary disease excluding myocardial infarction, heart failure, fatal hypertensive disease, and fatal aortic aneurysm), risk increased continuously and roughly linearly with higher alcohol intake, with no lower threshold below which less alcohol ceased to be beneficial. Only myocardial infarction showed an inverse association. Therefore, lower intakes did provide lower risk for most cardiovascular diseases.

2:38:15Rhonda Patrick (host)contradictedlow

In men, consuming 1 to 7 alcoholic drinks per week showed no significant negative changes in semen parameters or sex hormones, while consuming more than 7 drinks per week was linked to lower semen volume, testosterone, and FSH, and higher estrogen and LH.

"In this study, drinking 1 to 7 alcoholic drinks per week appeared to offer protection against these effects, as no significant changes were observed in semen parameters or sex hormones. However, having more than seven drinks per week was associated with lower semen volume, testosterone, and follicle-stimulating hormone, as well as higher levels of estrogen and luteinizing hormone compared to non-drinkers." (said at 2:38:15)

Large cross-sectional studies evaluating alcohol consumption, semen parameters, and male reproductive hormones contradict the described hormonal pattern. In a large international study of 8,344 healthy men (PMID: 24893607), moderate alcohol intake was not adversely associated with semen parameters, but higher alcohol intake was associated with significantly higher—not lower—serum free and total testosterone levels, while showing no significant associations with FSH or LH levels. Similarly, a cohort study of 1,221 young men (PMID: 25277121) found that higher alcohol consumption in the preceding week was associated with increased free testosterone levels, though habitual intake above 5 units per week was associated with reductions in sperm concentration and normal morphology.

2:45:24Rhonda Patrick (host)contradictedmoderate

The World Alzheimer Report 2022 concluded that a protective effect against Alzheimer's disease exists only for red wine up to four glasses per day, but not for other alcohol types.

"The World Alzheimer Report from 2022 concluded that when it comes to Alzheimer's disease, a protective effect may only exist for red wine consumption up to four glasses per day, but not other types of alcohol." (said at 2:45:24)

The claim mischaracterizes both the World Alzheimer Report 2022 (which focused on post-diagnostic support and dementia care) and epidemiological evidence on alcohol intake and dementia. Systematic reviews and dose-response meta-analyses show that while light-to-moderate alcohol consumption is associated with a lower risk of Alzheimer's disease and all-cause dementia, heavy alcohol consumption (such as four glasses per day, which equates to ~28 drinks per week) significantly increases the risk of developing Alzheimer's disease (RR = 1.29, 95% CI: 1.21-1.36) and all-cause dementia.

3:04:53Rhonda Patrick (host)contradictedmoderate

FGF21 levels do not increase following resistance training.

"FGF21 levels don't increase after resistance training, however." (said at 3:04:53)

The absolute claim that FGF21 levels do not increase following resistance training is contradicted by clinical evidence. In a randomized controlled trial investigating 12 weeks of resistance training versus aerobic training in obese men with type 2 diabetes mellitus, resistance training produced a significant moderate-to-large increase in FGF-21 concentrations (effect size = 0.61), showing greater adaptive responses than aerobic training. While acute resistance exercise bouts may fail to induce substantial transient spikes in circulating FGF21 compared to prolonged endurance exercise, chronic resistance training programs have been demonstrated to increase FGF-21 levels in specific populations.

3:09:28Rhonda Patrick (host)contradictedlow

Consuming one to two alcoholic drinks per day elevates the risk of dementia and cancer and reduces life expectancy.

"Even though one to two drinks per day seems to lower the risk for cardiovascular diseases and diabetes, this amount seems to elevate the risk of dementia and cancer and reduce life expectancy" (said at 3:09:28)

The speaker bundles three claims regarding the effects of 1 to 2 alcoholic drinks per day (approximately 14–28 g of alcohol per day): cancer risk, life expectancy, and dementia risk. While alcohol consumption at 1 to 2 drinks per day is associated with an elevated risk of several cancers and drinking above 100 g per week (about 1–2 drinks per day) is associated with reduced life expectancy compared to lighter drinking (Wood et al., 2018), the claim that 1 to 2 drinks per day elevates dementia risk is contradicted by observational meta-analyses. Systematic reviews and dose-response meta-analyses consistently find a J-shaped relationship for cognitive outcomes, where light-to-moderate intake (roughly up to 15–30 g/day or 1–2 standard drinks) is associated with a lower or unchanged risk of dementia compared to non-drinking, with increased risk observed primarily at heavy consumption levels (>30–38 g/day). Because the least accurate bundled assertion (elevated dementia risk at 1–2 drinks/day) is contradicted by prospective evidence, the overall claim is graded as contradicted.

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.