Pierre Capel
Utrecht University
Pierre Capel is a professor emeritus of experimental immunology at Utrecht University in the Netherlands. His academic research has covered topics ranging from genetic modification to cancer immunotherapy. Additionally, he has collaborated with Wim Hof to study the scientific mechanisms behind extreme cold exposure and physical feats.
21 claims checked on air: 2 context 3 contradicted 3 overstated 11 supported 2 unverified 6 flagged
What they said on air - overstated
A gene expression study on white blood cells found that subjective loneliness altered at least 209 elementary biological functions across the immune system, metabolism, and hormones.
"In the case that somebody is lonely, uh in that article was at least 209 elementary functions in life were changed inside the immune system, inside metabolism, hormone levels, and whatever." (said at 0:11:40)
The landmark 2007 leukocyte gene expression study on subjective loneliness by Cole et al. identified 209 differentially expressed genes (transcripts) in circulating white blood cells between individuals experiencing high versus low chronic loneliness, rather than 209 distinct elementary biological functions. The altered gene profiles were primarily related to immune activation, pro-inflammatory signaling (NF-κB), transcription control, and suppression of type I interferon responses and mature B lymphocyte function. In addition, the original microarray study was a small cross-sectional investigation in 14 participants, representing preliminary correlational data rather than established causal effects across broad physiological functions.
In the early 1970s, using gamma interferon as a cancer therapy caused treated patients to develop psychosis.
"A very strong but sad example is that in the early '70s when gamma interferon was used as therapeutic agent for certain type of cancer, the only effect was that all these people who were treated ended up psychotic in the psychiatry ward because gamma interferon influences the immune system, but also influences the central nervous system." (said at 0:22:05)
While interferon therapies are well-documented to cross into or influence the central nervous system and cause neuropsychiatric adverse effects—such as depression (affecting approximately 20–50% of patients), anxiety, confusional states, and, in rarer instances, manic or psychotic symptoms—the claim that trials caused 'all' treated patients to become psychotic and end up in psychiatric wards is a substantial overstatement. Furthermore, psychiatric complications occur across interferon formulations (primarily interferon-alpha) rather than being the universal or sole outcome of early gamma interferon administration.
- partial: Neuropsychiatric adverse effects of interferon-alpha: recognition and management. (CNS drugs 2005) · cited 487x in the literature
"Acute IFN alpha-induced confusional states are typically characterised by disorientation, lethargy, somnolence, psychomotor retardation, difficulties with speaking and writing, parkinsonism and psychotic symptoms." (abstract, results, passage verified)
pubmedfull study (doi) - partial: Psychiatric Adverse Effects Of Interferon Therapy. (Clujul medical (1957) 2013) · cited 6x in the literature
"Clinical studies have reported a larger number of psychiatric symptoms consecutive to immunomodulating interferon therapy. The most frequent are depression, suicidal behavior, manic syndrome, anxiety disorders, psychotic disorders and delirium associated with an array of unspecific psychiatric symptoms" (abstract, results, passage verified)
pubmed
After 7 weeks of regular meditation, brain activity shifts from a balanced 50/50 state toward greater left prefrontal cortex activity.
"Normally it's a 50/50 activity left-right, but with meditation it shifts a little bit to the left, and the left part is more the harmonious, well-being, feeling okay instead of the troublesome on the right. And this shift, and you make new neuronal, neuronal connections, new nerve cells are being made, gives you a really constant feeling of emotional stability. And you can measure the number of brain activities at different levels after 7 weeks of meditation, and you see a fantastic change to the positive." (said at 0:30:20)
The claim refers to seminal research on mindfulness-based stress reduction (notably Davidson et al., 2003), which evaluated an 8-week (rather than 7-week) meditation training program in 25 healthy employees compared to 16 wait-list controls. That randomized trial found a statistically significant shift toward greater left-sided anterior activation on electroencephalography (EEG), a pattern linked to positive affect and approach-oriented emotion regulation. However, framing baseline brain activity as a literal '50/50' split is a physiological oversimplification, as baseline frontal asymmetry varies widely across individuals as a trait marker. Furthermore, asserting that this practice generates 'new nerve cells' (adult neurogenesis) in the prefrontal cortex is not supported by human neuroimaging or cellular evidence, which primarily demonstrates functional changes and structural plastic alterations rather than cortical neurogenesis.
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