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When Expert Authority Is Helpful or Misleading
Appeals to authority need checks for expertise, accuracy, independence, and evidence before they deserve trust.
On this page
- Why authority is not automatically a fallacy
- The celebrity doctor supplement example
- Reliability checks before accepting the claim
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Introduction
In discussions about logical fallacies, appeals to authority are often misunderstood. People sometimes assume that citing an expert is automatically fallacious, while others assume that a famous or credentialed person settles a question merely by expressing an opinion. Both positions are mistaken. Expert authority can be a valuable shortcut in a complex society where no one can personally verify every scientific, medical, legal, or technical claim. The key question is not whether an authority is being cited, but whether that authority deserves trust in the specific context. When celebrity endorsements, media personalities, or high-profile professionals become the primary evidence for a claim, careful reliability checks become essential. [read.aupress.ca]read.aupress.caChapter 16Fallacies of Expertise | Critical Thinking, Logic…The appeal to authority is a fallacy where we take something as fact just because a… [Scribbr]scribbr.comappeal to authority fallacyDefinition & ExamplesJun 15, 2023 — Appeal to authority fallacy occurs when we accept a claim merely because someone tells us that an aut…
Why Authority Is Not Automatically a Fallacy
Many arguments reasonably rely on expertise. Most people accept the advice of engineers about bridge safety, physicians about medical diagnosis, or climate scientists about climate models because specialised knowledge is distributed across society. Relying on qualified experts is often rational and unavoidable. [read.aupress.ca]read.aupress.caChapter 16Fallacies of Expertise | Critical Thinking, Logic…The appeal to authority is a fallacy where we take something as fact just because a… [2ds-wordpress.haverford.edu]ds-wordpress.haverford.eduExpert Opinion/Appeal to Authority | Science ExposedNot all appeals to authority are fallacious; if the authority that is appealed to is…
An appeal to authority becomes problematic when the authority itself is treated as the evidence. If the reasoning takes the form “a famous person said it, therefore it is true,” the authority’s status replaces independent support for the claim. This is especially risky when the authority lacks expertise in the relevant field, when experts substantially disagree, or when the claim is presented without supporting data. [Scribbr]scribbr.comappeal to authority fallacyDefinition & ExamplesJun 15, 2023 — Appeal to authority fallacy occurs when we accept a claim merely because someone tells us that an aut… ThoughtCo The distinction matters because rejecting every expert opinion would be impractical [thoughtco.com]thoughtco.comlogical fallacies appeal to authority 250336Logical Fallacies: Appeal to AuthorityMar 31, 2021 — An appeal to authority becomes a fallacy when it relies on testimony, not facts. · A…, yet accepting every expert statement uncritically would be equally irrational. The goal is not to avoid authority altogether but to determine whether the authority is relevant, competent, and supported by evidence.
The Celebrity Doctor Supplement Example
Health and wellness marketing provides a useful illustration. Advertisements frequently feature celebrities, influencers, or media-famous doctors promoting supplements, weight-loss products, or wellness programmes. These endorsements often create the impression that the product’s effectiveness has been established, even when the underlying evidence is weak or absent. [SupplySide Supplement Journal]supplysidesj.comSupply Side Supplement Journal FTC Cracks Down on Supplement Marketers ToutingSupplySide Supplement JournalFTC Cracks Down on Supplement Marketers Touting…November 17, 2017 — Among the health claims quoted in FTC… [ASA]asa.org.ukASAHealth: Celebrities and health professionalsHealth: Celebrities and health professionals - ASA24 Mar 2026 — Endorsements by health professionals and celebrities could be viewed by t…
A common pattern looks like this:
- A celebrity or well-known doctor endorses a supplement.
- The audience associates the endorser with expertise, success, or trustworthiness.
- The endorsement becomes more persuasive than the actual scientific evidence.
- Consumers infer that the product works because an admired figure supports it.
The reasoning may be flawed for several reasons. The celebrity may possess no relevant expertise. Even a qualified doctor may be speaking outside their specialty. The endorsement may involve financial compensation. Most importantly, the product’s effectiveness depends on clinical evidence, not on who promotes it. [Scribbr]scribbr.comappeal to authority fallacyDefinition & ExamplesJun 15, 2023 — Appeal to authority fallacy occurs when we accept a claim merely because someone tells us that an aut… [The Logic of Science]thelogicofscience.comThe Logic of Science Appealing to Authority vsDeferring to ExpertsMar 20, 2015 — A more common and insidious form of this fallacy occurs when you try to legitimatize a view by citing…
Regulators have repeatedly expressed concern about health advertising that relies on endorsements rather than substantiated evidence. The United States Federal Trade Commission requires disclosure of material relationships between advertisers and endorsers, while advertising regulators have warned that celebrity and health-professional endorsements can create undue influence over consumers. [Federal Trade Commission]ftc.govSource details in endnotes. [Federal Register]federalregister.govguides concerning the use of endorsements and testimonials in advertisingGuides Concerning the Use of Endorsements and…26 Jul 2023 — The Federal Trade Commission (FTC or Commission) is adopting revised Guide…
The problem becomes even more complicated when endorsements are fabricated. Consumer-protection agencies have warned that scammers increasingly use manipulated audio, video, and images to create false celebrity endorsements for products ranging from supplements to investment schemes. In such cases, the authority claim itself may be entirely fictitious. [Consumer Advice]consumer.ftc.govConsumer Advice Did a celebrity really endorse THAT?Maybe notApril 22, 2024 — 24 Apr 2024 — Scammers are using fake celebrity and influencer testimonials and endorsements — complete with do…
Reliability Checks Before Accepting the Claim
When confronted with a celebrity authority claim, the most useful response is neither automatic acceptance nor automatic dismissal. Instead, several reliability checks can help determine how much weight the authority deserves.
Is the Person an Expert in This Exact Area?
Expertise is domain-specific. A successful actor is not automatically qualified to discuss vaccine safety. A surgeon may not be an authority on nutrition research. A physicist is not necessarily an expert on economic policy.
The first question should therefore be whether the person’s training, research, experience, or professional work directly relates to the claim being made. Appeals to authorities outside their field are among the most common forms of fallacious authority reasoning. [Scribbr]scribbr.comappeal to authority fallacyDefinition & ExamplesJun 15, 2023 — Appeal to authority fallacy occurs when we accept a claim merely because someone tells us that an aut… [ThoughtCo]thoughtco.comlogical fallacies appeal to authority 250336Logical Fallacies: Appeal to AuthorityMar 31, 2021 — An appeal to authority becomes a fallacy when it relies on testimony, not facts. · A…
Is There Independent Evidence?
A trustworthy authority should point toward evidence rather than replace it. Scientific studies, systematic reviews, clinical trials, official reports, and transparent data matter more than reputation alone.
If the only support for a claim is that a famous individual believes it, the argument remains weak. If the authority can identify evidence that others can examine independently, the claim becomes more credible. Logically Fallacious [ThoughtCo]thoughtco.comlogical fallacies appeal to authority 250336Logical Fallacies: Appeal to AuthorityMar 31, 2021 — An appeal to authority becomes a fallacy when it relies on testimony, not facts. · A…
Are Conflicts of Interest Disclosed?
Financial incentives, sponsorships, ownership stakes, and promotional agreements can affect credibility. This does not automatically invalidate a claim, but it changes how carefully the audience should evaluate it.
Scientific and media organisations increasingly require experts to disclose potential conflicts of interest because transparency helps audiences judge reliability. Likewise, advertising rules often require influencers and endorsers to disclose material relationships with brands. [Federal Trade Commission]ftc.govSource details in endnotes. [3SMC España]sciencemediacentre.esSMC España Important for scientific sources to declare conflicts of interestSMC EspañaImportant for scientific sources to declare conflicts of interestDecember 5, 2022 — 5 Dec 2022 — All researchers who collaborat… [Science]sciencemediacentre.orgScience Media Centre Strategic Review ReportThe SMC considers an expert to be a person who has extensive knowledge and experience in a sc…
Does the View Reflect Expert Consensus?
In many technical fields, a lone expert can be mistaken. Consensus does not guarantee correctness, but broad agreement among qualified specialists is usually more reliable than the opinion of a single high-profile figure.
This distinction helps explain why deferring to a scientific consensus differs from relying on a celebrity expert. The former rests on a wider body of evidence and scrutiny; the latter may rest largely on personal authority. [Reddit]reddit.comRedditIs trusting what the scientific community has to say about a…January 23, 2022 — Assuming you aren't quoting what 1 person has to… [Reddit]reddit.coma fallacy when a speaker claims, as their sole…Read more…
Does the Claim Depend on Status Rather Than Reasons?
One warning sign is that the argument repeatedly highlights fame, credentials, or prestige while providing little substantive support. If the persuasive force comes mainly from titles, popularity, or reputation, the authority may be functioning as a substitute for evidence rather than a guide to evidence. [Logically Fallacious]logicallyfallacious.comhow to spot the appeal to authority fallacyThe argument leans on the person's title, fame, or reputation instead of facts. · The authority is…Read more…
Why Celebrity Authority Remains So Persuasive
Celebrity authority works because people often use cognitive shortcuts. Assessing technical evidence can be difficult, while recognising a famous face or trusted professional is easy. Social media intensifies this tendency by rewarding confidence, relatability, and personal storytelling, even when those qualities do not correlate with expertise. [Vox]vox.comhealth and wellness social media influencers pew reportThe influencer landscape is a mix of evidence-based professionals and uncredentialed individuals offering advice based on anecdotal exper…
Research on trust in experts also suggests that perceived expertise and perceived conflicts of interest influence whether audiences accept claims. People frequently use these cues as proxies for evaluating information when they lack specialist knowledge themselves. [SMC España]sciencemediacentre.esSMC España Important for scientific sources to declare conflicts of interestSMC EspañaImportant for scientific sources to declare conflicts of interestDecember 5, 2022 — 5 Dec 2022 — All researchers who collaborat…
The result is a recurring challenge in public debate: a well-known figure may attract attention to a topic, but attention should not be confused with evidence.
The Practical Lesson
Within discussions of logical fallacies and the fallacy fallacy, celebrity authority claims illustrate an important middle position. It is incorrect to dismiss every appeal to expertise as fallacious. It is equally incorrect to assume that fame, credentials, or professional status make a claim true.
A reliable appeal to authority requires more than authority. The authority must be relevant, competent, transparent about potential conflicts, and connected to evidence that can be independently examined. When those conditions are missing, the authority’s reputation may explain why people believe the claim, but it does not establish that the claim is correct. [logicalfallacies.org]logicalfallacies.orgAppeal To AuthorityDefinition & Examples | LFWhile citing experts can be legitimate, the fallacy arises when the authority is treated as infallible, is not… [3read.aupress.ca]read.aupress.caChapter 16Fallacies of Expertise | Critical Thinking, Logic…The appeal to authority is a fallacy where we take something as fact just because a… [Scribbr]scribbr.comappeal to authority fallacyDefinition & ExamplesJun 15, 2023 — Appeal to authority fallacy occurs when we accept a claim merely because someone tells us that an aut…
Amazon book picks
Further Reading
Books and field guides related to When Expert Authority Is Helpful or Misleading. Use these as the next step if you want deeper reading beyond the article.
The Demon-Haunted World
Rating: 4.5/5 from 43 Google Books ratings
Directly addresses how to assess authority, evidence, and scientific credibility.
A Rulebook for Arguments
Covers legitimate and illegitimate appeals to authority in argumentation.
eBay marketplace picks
Marketplace Samples
Example marketplace items related to this page. Use the search link to explore similar finds on eBay.
Endnotes
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Source: read.aupress.ca
Title: Chapter 16
Link: https://read.aupress.ca/read/critical-thinking-logic-and-argument/section/37569f83-38fb-40e0-9575-ede2c97e5753Source snippet
Fallacies of Expertise | Critical Thinking, Logic...The appeal to authority is a fallacy where we take something as fact just because a...
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Source: thoughtco.com
Title: logical fallacies appeal to authority 250336
Link: https://www.thoughtco.com/logical-fallacies-appeal-to-authority-250336Source snippet
Logical Fallacies: Appeal to AuthorityMar 31, 2021 — An appeal to authority becomes a fallacy when it relies on testimony, not facts. · A...
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Source: ds-wordpress.haverford.edu
Link: https://ds-wordpress.haverford.edu/psych2015/projects/chapter/expert-opinionappeal-to-authority/ -
Source: logicalfallacies.org
Title: Appeal To Authority
Link: https://www.logicalfallacies.org/appeal-to-authority.htmlSource snippet
Definition & Examples | LFWhile citing experts can be legitimate, the fallacy arises when the authority is treated as infallible, is not...
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Source: asa.org.uk
Title: ASAHealth: Celebrities and health professionals
Link: https://www.asa.org.uk/advice-online/health-celebrities-and-health-professionals.htmlSource snippet
Health: Celebrities and health professionals - ASA24 Mar 2026 — Endorsements by health professionals and celebrities could be viewed by t...
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Source: reddit.com
Link: https://www.reddit.com/r/askphilosophy/comments/sard9s/is_trusting_what_the_scientific_community_has_to/Source snippet
RedditIs trusting what the scientific community has to say about a...January 23, 2022 — Assuming you aren't quoting what 1 person has to...
Published: January 23, 2022
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Source: reddit.com
Link: https://www.reddit.com/r/centrist/comments/14qo05a/appealing_to_expert_consensus_is_not_an_appeal_to/Source snippet
a fallacy when a speaker claims, as their sole...Read more...
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Source: vox.com
Title: health and wellness social media influencers pew report
Link: https://www.vox.com/good-medicine-newsletter/487970/health-and-wellness-social-media-influencers-pew-reportSource snippet
The influencer landscape is a mix of evidence-based professionals and uncredentialed individuals offering advice based on anecdotal exper...
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Source: expert.it
Title: Benvenuto nel negozio online di Expert
Link: https://www.expert.it/it/it/exp/Source snippet
ExpertBenvenuto nel negozio online di Expert - Gli esperti siamo noi. Acquista ora il tuo Smartphone, TV, Elettrodomestico e molto altro...
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Source: reddit.com
Link: https://www.reddit.com/r/askphilosophy/comments/1fcymup/when_is_an_appeal_to_authority_not_a_logical/Source snippet
Because sometimes I feel like appeal to authority...
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Source: sgtscholar.wordpress.com
Title: argument from authority
Link: https://sgtscholar.wordpress.com/2019/06/30/argument-from-authority/Source snippet
from authority - Sgt Scholar - WordPress.comJun 30, 2019 — Generally, this fallacy/tactic misuses some aspect of expertise, power, or fam...
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Source: scribbr.com
Title: appeal to authority fallacy
Link: https://www.scribbr.com/fallacies/appeal-to-authority-fallacy/Source snippet
Definition & ExamplesJun 15, 2023 — Appeal to authority fallacy occurs when we accept a claim merely because someone tells us that an aut...
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Source: youtube.com
Title: Logical Fallacies: The Appeal to Authority
Link: https://www.youtube.com/watch?v=O-XfLZSxZKASource snippet
Appeal to Authority Fallacy - YouTube...
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Source: youtube.com
Title: Appeal to Authority Fallacy
Link: https://www.youtube.com/watch?v=f2JYd12TwGYSource snippet
What is The Appeal to Authority Fallacy? | Critical Thinking Basics - YouTube...
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Source: scribbr.co.uk
Title: Scribbr Appeal to Authority Fallacy | Definition & Examples
Link: https://www.scribbr.co.uk/fallacy/the-appeal-to-authority-fallacy/Source snippet
ScribbrAppeal to Authority Fallacy | Definition & Examples - Scribbr16 Jun 2023 — Appeal to authority fallacy is citing an authority figu...
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Source: sciencemediacentre.org
Link: https://www.sciencemediacentre.org/wp-content/uploads/2014/09/SMC-Strategic-Review-2014-FINAL.pdfSource snippet
Science Media Centre Strategic Review ReportThe SMC considers an expert to be a person who has extensive knowledge and experience in a sc...
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Source: supplysidesj.com
Title: Supply Side Supplement Journal FTC Cracks Down on Supplement Marketers Touting
Link: https://www.supplysidesj.com/supplement-regulations/ftc-cracks-down-on-supplement-marketers-touting-bogus-celebrity-endorsementsSource snippet
SupplySide Supplement JournalFTC Cracks Down on Supplement Marketers Touting...November 17, 2017 — Among the health claims quoted in FTC...
Published: November 17, 2017
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Source: thelogicofscience.com
Title: The Logic of Science Appealing to Authority vs
Link: https://thelogicofscience.com/2015/03/20/the-rules-of-logic-part-6-appealing-to-authority-vs-deferring-to-experts/Source snippet
Deferring to ExpertsMar 20, 2015 — A more common and insidious form of this fallacy occurs when you try to legitimatize a view by citing...
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Source: ftc.gov
Link: https://www.ftc.gov/business-guidance/advertising-marketing/endorsements-influencers-reviews -
Source: federalregister.gov
Title: guides concerning the use of endorsements and [testimonials]({{ ‘testimonials/’ | relative_url }}) in advertising
Link: https://www.federalregister.gov/documents/2023/07/26/2023-14795/guides-concerning-the-use-of-endorsements-and-testimonials-in-advertisingSource snippet
Guides Concerning the Use of Endorsements and...26 Jul 2023 — The Federal Trade Commission (FTC or Commission) is adopting revised Guide...
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Source: consumer.ftc.gov
Title: Consumer Advice Did a celebrity really endorse THAT?
Link: https://consumer.ftc.gov/consumer-alerts/2024/04/did-celebrity-really-endorse-maybe-notSource snippet
Maybe notApril 22, 2024 — 24 Apr 2024 — Scammers are using fake celebrity and influencer testimonials and endorsements — complete with do...
Published: April 22, 2024
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Source: logicallyfallacious.com
Title: how to spot the appeal to authority fallacy
Link: https://www.logicallyfallacious.com/blog/how-to-spot-the-appeal-to-authority-fallacySource snippet
The argument leans on the person's title, fame, or reputation instead of facts. · The authority is...Read more...
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Source: logicallyfallacious.com
Link: https://www.logicallyfallacious.com/logicalfallacies/Appeal-to-AuthoritySource snippet
Logically FallaciousAppeal to AuthorityInsisting that a claim is true simply because a valid authority or expert on the issue said it was...
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Source: sciencemediacentre.es
Title: SMC España Important for scientific sources to declare conflicts of interest
Link: https://sciencemediacentre.es/en/conflictos-de-interesSource snippet
SMC EspañaImportant for scientific sources to declare conflicts of interestDecember 5, 2022 — 5 Dec 2022 — All researchers who collaborat...
Published: December 5, 2022
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Source: sciencemediacentre.org
Link: https://www.sciencemediacentre.org/working-with-us/for-scientists/guidance-note-register-of-interests-policy/Source snippet
register of interests policy: guidance note for scientistsThis guidance note explains the SMC's register of interests policy, what type o...
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Source: anmeldung.sciencemediacenter.de
Link: https://anmeldung.sciencemediacenter.de/en/smc-for-researchers/how-we-look-for-expertise/Source snippet
Science Media Center GermanyHow we look for ExpertiseExperts whom we ask for their expertise should disclose any relevant conflicts of in...
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Source: klaus-tschira-stiftung.de
Link: https://klaus-tschira-stiftung.de/en/projekte/science-media-center/Source snippet
Science Media CenterThe Science Media Center Germany (SMC) supports journalists with freely accessible statements and background informat...
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Source: quillbot.com
Title: appeal to authority fallacy
Link: https://quillbot.com/blog/reasoning/appeal-to-authority-fallacy/Source snippet
Examples & Definition26 Jun 2024 — The appeal to authority fallacy (or argument from authority) is the mistake of relying on expert opini...
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Source: sciencemediacentre.co.nz
Link: https://www.sciencemediacentre.co.nz/for-experts/providing-an-expert-reaction/Source snippet
What we're asking for is some brief feedback on a research paper...Read more...
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Source: philosophy.lander.edu
Link: https://philosophy.lander.edu/logic/authority.htmlSource snippet
Verecundiam (Argument from Authority) Explained with...The ad verecundian (appeal to authority) is described and analyzed in both its fa...
Additional References
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Source: samgoldstein.com
Link: https://samgoldstein.com/resources/articles/forensic-updates/forensic-update-beware-of-pseudoscience.aspxSource snippet
Beware of PseudosciencePseudoscience often employs logical fallacies, misleading arguments that appear sound but lack logical validity. C...
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Source: researchgate.net
Link: https://www.researchgate.net/publication/383486573_P46_Does_the_science_media_centre_promote_pro-corporate_views_of_science_an_analysis_of_SMC_expert_comments_on_science_in_the_newsSource snippet
an analysis of SMC expert comments on science in the newsThe most well-known is the UK Science Media Centre (SMC) which is active in infl...
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Source: citizen.org
Link: https://www.citizen.org/article/letter-to-ftc-investigate-casey-means-potential-violations-of-influencer-marketing-standards/Source snippet
Letter to FTC: Investigate Casey Means' Potential...5 Feb 2026 — Casey Means has violated Federal Trade Commission (FTC) policy on undis...
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Source: ecampusontario.pressbooks.pub
Link: https://ecampusontario.pressbooks.pub/criticalthinking1234/chapter/unknown-4/Source snippet
E3. Has the expert properly attended to the question at hand? E4. Is the expert's opinion backed by plausible arguments and evidence?Read...
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Source: england.nhs.uk
Title: top doctor calls for ban on damaging and misleading celebrity social media ads
Link: https://www.england.nhs.uk/2019/02/top-doctor-calls-for-ban-on-damaging-and-misleading-celebrity-social-media-ads/Source snippet
Top doctor calls for ban on 'damaging and misleading'...2 Feb 2019 — England's top doctor has today called on social media companies to...
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Source: businessinsider.com
Title: Business Insider Supplements are the new obsession, even as doctors stay wary
Link: https://www.businessinsider.com/thorne-supplement-factory-charleston-2026-2Source snippet
I went inside one of the industry's biggest factories.The article provides an in-depth look at the booming dietary supplement industry, f...
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Source: mica-insurance.com
Title: considerations when promoting your practice through a social media influencer
Link: https://www.mica-insurance.com/blog/posts/considerations-when-promoting-your-practice-through-a-social-media-influencer/Source snippet
Considerations When Promoting Your Practice Through a...30 Jun 2025 — The FTC Act gives the FTC authority to regulate advertising, inclu...
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Source: thinkingispower.com
Link: https://thinkingispower.com/logical-fallacies/Source snippet
The opinion of experts is only relevant within their area of expertise. For example, a heart surgeon is not an...Read more...
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Source: rss.org.uk
Link: https://rss.org.uk/getmedia/c587736f-a351-4b3a-849d-ae919ea0f18b/Joining-the-SMC-expert-database.pdf.aspxSource snippet
We would like to be able to contact you when your area of expertise becomes topical in the media. This could.Read more...
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Source: ecfr.gov
Link: https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B/part-255Source snippet
reason to believe that the endorser continues to subscribe to the...
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