#618: How Wellness & Optimisation Culture Can Commodify Science – Nick Tiller, PhD

Useful Terminology

• Scientific scepticism: Evaluating claims using appropriate standards of evidence while remaining willing to change a conclusion when better evidence becomes available.
• Cynicism: Dismissing a claim before adequately evaluating the evidence. In the episode, Tiller contrasts this with scepticism, which remains open-minded but evidence-constrained.
• Science communication: Explaining scientific evidence in a way that helps an audience understand what was studied, what the findings mean, how certain they are and how they fit the wider literature.
• Science commodification: Tiller’s term for using the appearance, language or authority of science primarily to build a brand, generate attention or sell something, rather than to improve understanding.
• Scientific plausibility: The extent to which a proposed effect is compatible with established knowledge in relevant scientific fields. Plausibility influences how much evidence should be required, but it is not itself proof.
• Placebo effect: A real psychobiological response produced by expectations and treatment context rather than the specific biological mechanism claimed for an intervention.
• P-hacking: Using multiple analyses or statistical tests and preferentially reporting those that produce a desired or statistically significant result.
• Statistical power: The probability that a study will detect an effect of a specified size if that effect genuinely exists.
• Publication bias: The preferential publication or visibility of positive, novel or statistically significant findings relative to null or less interesting findings.
• Questionable research practices: Research behaviours that can distort the scientific record without necessarily involving outright fabrication, including p-hacking, selective reporting and duplicate publication.

The “Health and Wellness Lie”

Tiller describes the central “lie” as the idea that people need to continually buy products, protocols, supplements, technologies or services in order to gain control over their health, wellness or performance.

• Commercial wellness often promises acceleration.
  • Examples discussed include supplements, “magic” exercise routines, ice plunges, alternative therapies and optimisation practices.
  • The recurring proposition is that a difficult physiological process can be expedited through a special intervention.
• The promise is psychologically attractive because it offers control.
  • People naturally want explanations for uncertain outcomes and ways to influence them.
  • Commercial wellness can convert uncertainty into something apparently controllable: buy this product, take this supplement or follow this protocol.
• The boring fundamentals are difficult to commercialise.
  • Tiller contrasts quick fixes with familiar health behaviours such as regular physical activity, eating well, not smoking and limiting alcohol.
  • These behaviours generally require sustained effort and do not provide the novelty or immediacy that performs well in commercial media.
• A practical warning sign is an implausibly easy shortcut to a major physiological outcome.
  • Building muscle, losing substantial body mass, improving cardiorespiratory fitness or changing cardiometabolic risk generally takes time.
  • A claim of a very large effect from a trivial intervention is therefore a reason to increase scrutiny, not an automatic reason to reject it.

Science Communication vs. Science Commodification

The episode makes an important distinction between people who use science to help an audience understand evidence and people who use science primarily as a source of authority.

• A responsible science communicator asks what the research actually shows.
  • What question did the study test?
  • How was it designed?
  • How large was the effect?
  • What are the limitations?
  • How does it fit the wider evidence base?
• A science commodifier can use the same study very differently.
  • Highlight the most dramatic finding.
  • Remove uncertainty and caveats.
  • Use technical language to create credibility.
  • Present one paper as if it resolves a much larger scientific question.
  • Attach the resulting certainty to a brand, product or audience-growth strategy.
• Credentials do not solve the problem.
  • The difficult cases are often not obviously unqualified people making absurd claims.
  • A scientist, physician or former academic can still cherry-pick evidence, overstate findings or speak outside their expertise.
• Omission can be as misleading as a false statement.
  • A claim can be technically true in isolation while becoming misleading because important context is absent.
  • This is why simply checking whether a sentence is factually correct is not enough. The relevant question is whether the overall message faithfully represents the evidence.

Case Study: Vitamin D, VO₂max and a Retracted Trial

The vitamin D example is used to show why publication in a peer-reviewed journal is not the end of critical appraisal.

• The background claim was plausible enough to attract attention.
  • Vitamin D deficiency is clinically relevant, and supplementation has legitimate uses when deficiency is present.