4 Needs context
The Environmental Working Group reported that over 122 million Americans drink tap water containing high levels of chemicals known to cause cancer.
"The Environmental Working Group has also shown that over 122 million Americans drink tap water with high levels of chemicals known to cause cancer." (said at 0:17:30)
The statement accurately reflects reporting and published cumulative risk models by the Environmental Working Group (EWG), an environmental advocacy organization. EWG researchers have published assessments analyzing water quality data from tens of thousands of community water systems serving hundreds of millions of Americans, finding widespread exposure to carcinogenic contaminants (such as arsenic, disinfection byproducts, and radiological contaminants) and estimating that cumulative exposures contribute to thousands of lifetime cancer cases. However, critical context is necessary: what EWG characterizes as 'high levels' refers to concentrations exceeding non-enforceable, health-based reference benchmarks (often targeting a 1-in-a-million lifetime excess cancer risk or state public health goals), rather than legal violations of enforceable EPA Maximum Contaminant Levels (MCLs). Most public water systems cited in these analyses are fully compliant with federal Safe Drinking Water Act standards.
- context: Applying a cumulative risk framework to drinking water assessment: a commentary (Environmental Health 2019) · cited 40x in the literature
"The health risks of drinking water contaminants and the economic benefits of drinking water standards are typically assessed one chemical at a time, an approach that misses the health impacts of co-occurring contaminants in drinking water." (abstract, background, passage verified)
openalexfull study (doi) - context: Analysis of Cumulative Cancer Risk Associated with Disinfection Byproducts in United State… (International Journal of Environmental Research and Public Health 2020) · cited 43x in the literature
"Epidemiological data suggest that lifetime cancer risk from disinfection byproducts for the U.S. population served by community water systems is approximately 3.0 × 10−3 (2.1 × 10−4–5.7 × 10−3), or a lifetime cancer risk of three cases per thousand people." (abstract, results, passage verified)
openalexfull study (doi) - context: US drinking water quality: exposure risk profiles for seven legacy and emerging contaminan… (Journal of Exposure Science & Environmental Epidemiology 2023) · cited 165x in the literature
"However, numerous chemical contaminants from a range of anthropogenic and natural sources continue to pose chronic health concerns, even in countries with established drinking water regulations, such as the US." (abstract, background, passage verified)
openalexfull study (doi)
Deliberate cold exposure reliably causes an increase in adrenaline and norepinephrine in the brain, and often leads to reductions in cortisol.
"You always get an increase in adrenaline, norepinephrine in the brain, and to some extent—and this might surprise you, perhaps not—you get often reductions in cortisol, which is kind of paradoxical, but when people practice, it's very reliable." (said at 0:35:55)
The claim is partially accurate but overstated and requires qualification. Acute cold exposure (such as cold-water immersion) reliably produces a large surge in peripheral norepinephrine (and often adrenaline), driven by robust sympathetic nervous system activation, though direct measurement of catecholamine levels inside the human brain is an extrapolation from peripheral markers and animal models. Regarding cortisol, cold water immersion is a classic physiological stressor that frequently stimulates the HPA axis and elevates cortisol, particularly during intense or unhabituated cold exposure. While some immersion protocols (notably Srámek et al., 2000) have observed unchanged or declining cortisol concentrations—frequently confounded by normal diurnal cortisol decline or habituation—reductions in cortisol are not a reliable or consistent hallmark of cold exposure across human trials.
Published scientific literature shows that cold exposure improves resilience to subsequent psychological stressors.
"And there is now evidence of improved resilience to subsequent stressors of the sort that you described. There are some okay papers." (said at 0:36:57)
The speaker accurately qualifies that there are 'some okay papers' showing evidence of cross-adaptation/resilience to subsequent stressors following repeated cold exposure. The cross-adaptation hypothesis posits that habituating to cold shock dampens generalized autonomic (sympathetic and catecholaminergic) reactivity to subsequent non-thermal stressors (e.g., hypoxia or acute psychological/cognitive stress). However, the evidence in humans is preliminary, derived from small laboratory physiological studies measuring autonomic reactivity (such as heart rate variability and plasma catecholamines), and direct clinical evidence for robust, long-term resilience to psychological stressors remains limited.
James Gross's foundational model of emotion regulation focused on mechanisms including suppression, cognitive reappraisal, and acceptance.
"Initially when James Gross had emotional regulation, it was sort of focused on some basic mechanisms like suppression, reappraisal, acceptance. And now the big two topics in emotional regulation are variability and flexibility." (said at 1:27:20)
James Gross's foundational process model of emotion regulation (introduced in 1998 and detailed in early 2000s papers) categorized strategies across five points in the emotion-generative process: situation selection, situation modification, attentional deployment, cognitive change (chiefly cognitive reappraisal), and response modulation (chiefly expressive suppression). The bulk of early empirical work and the widely used Emotion Regulation Questionnaire (Gross & John, 2003) specifically contrasted cognitive reappraisal and expressive suppression. Acceptance is an emotion regulation strategy widely highlighted in third-wave cognitive-behavioral traditions (such as Acceptance and Commitment Therapy) and later incorporated into broader emotion regulation frameworks, rather than being a central component of Gross's original two-strategy paradigm. The field has indeed substantially shifted toward studying emotion regulation flexibility and affective variability in context.
- supports: Emotion regulation: affective, cognitive, and social consequences. (Psychophysiology 2002) · cited 4845x in the literature
"According to Gross's (1998, Review of General Psychology, 2, 271-299) process model of emotion regulation, strategies that act early in the emotion-generative process should have a different profile of consequences than strategies that act later on. This review focuses on two commonly used strategies for down-regulating emotion. The first, reappraisal, comes early in the emotion-generative process... The second, suppression, comes later in the emotion-generative process." (abstract, conclusions, passage verified)
pubmedfull study (doi) - supports: Individual differences in two emotion regulation processes: implications for affect, relat… (Journal of personality and social psychology 2003) · cited 11872x in the literature
"Five studies tested two general hypotheses: Individuals differ in their use of emotion regulation strategies such as reappraisal and suppression, and these individual differences have implications for affect, well-being, and social relationships. Study 1 presents new measures of the habitual use of reappraisal and suppression." (abstract, results, passage verified)
pubmedfull study (doi)
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.