Guests & relationships

How to vet health claims and limit sponsor liability on a wellness podcast

Two liability lines meet on a wellness show: what a guest claims about their body or protocol, and what you say in a sponsor's host-read ad. Guest claims need a substantiation check before you book. Sponsor claims need the same check before you read them on air. This explains the mechanism, not legal advice.

Two liability lines, one episode

A wellness episode carries two separate liability lines, not one. The first is what your guest says about their own body, protocol, or product while the mic is open. The second is what you say when you read the sponsor's ad copy for a supplement, device, or program. Different speaker, different exposure, same show.

Both lines run through the same underlying test: is there a reasonable basis, competent and reliable evidence, behind the claim about to leave someone's mouth on your show. The FTC applies its health-claims substantiation standard to whoever is functioning as the advertiser at that moment, guest or sponsor. The difference is who counts as the advertiser on each side, and what you can do about it before the episode goes out. Screening a guest's authority catches the confident talker with no research behind them; it does not catch a credentialed guest making one claim past what their own research actually supports. Health-claim vetting is a narrower, sharper check.

The two liability lines on a wellness episode
SideWho's the advertiserWhat has to back the claimYour move before air
Guest's claim about their body or protocolThe guest, in that momentA study, clinical data, or documentation tied to the exact claim, not just the categoryAsk for the source, read it yourself, soften or cut what it doesn't cover
Sponsor's claim in your host-read adYou, reading the scriptThe same substantiation standard, requested from the sponsor before you recordDecline to read a line the sponsor can't back with something you can actually check

Side one: what a guest says about their own body or protocol

A guest recommending a protocol, a supplement, or a device crosses into an advertising claim once it reads as more than opinion. "Try harder, sleep more" is opinion. "This reversed my thyroid numbers in six weeks" is a claim that needs a study behind it. The FTC's substantiation standard does not care who is speaking.

Not every guest sentence needs a source. The line between a personal account and a claim is whether the guest is describing what happened to them, or promising it will happen to your listener. The table breaks the common wellness-guest claim types apart so you can tell which one you're hearing in real time.

Guest claim types and what actually substantiates them
Claim typeExample on airWhat actually substantiates it
Personal account"This helped my energy and my sleep"Framed as one person's experience, not a promise. No study required.
Disease claim"This reversed my prediabetes"A claim tied to a named condition needs research on that condition, not a testimonial
Comparative claim"This works better than what my doctor gave me"A named comparison needs a study that actually compared the two, not an opinion
Outcome and timeframe claim"This produced dramatic weight loss in under a month"A specific outcome tied to a specific window needs a study behind that exact combination

Side two: sponsor claims read in your voice

When you read a sponsor's script for a supplement or wellness program, you become the advertiser saying the claim, not a guest repeating it. FTC endorsement rules hold hosts, not just brands, responsible for a claim they deliver on air. Ad craft is a separate skill; this section covers what you're allowed to say.

The pre-air verification protocol

One protocol covers both sides because the test is the same: ask for the source, read what it actually says, and decide before the mic is live. Four steps, run every time a claim beyond opinion is about to air, whether it comes from a guest's mouth or a sponsor's script.

  1. Before you book the guest or approve the read, name the specific claim in one sentence. Vague claims hide the check you actually need to run.
  2. Ask for what backs it: a study, clinical data, or the product's own label, tied to that exact claim, not the category it sits in.
  3. Read the source yourself. Confirm it supports the specific sentence someone is about to say, not just the general idea behind it.
  4. Decide: air it as written, soften it live to what the source actually supports, or cut the line and move on. Say which, and why, out loud on the call before you record.

The claims that end a booking or a script

Some claims do not survive the protocol, they skip it. A handful of phrasings are hard stops regardless of what documentation shows up, because no single study covers what the sentence promises. Learn to hear these live and cut them before they leave the room.

What you keep on record after it airs

The protocol is only worth running if the answer survives the episode. Write down the claim, the source you checked, and the call you made, attached to the guest or sponsor it came from, not left in a message thread you'll never find again.

Pod Green Room keeps that record on the guest's card inside your guest pipeline, next to the booking notes and the release status. Pod Green Room stores the same call against the sponsor's file in your sponsor tracking, so the claim you cleared for the first read is still the claim you check against every renewal after it. Neither record depends on you remembering which email thread it lived in.

Common questions

Can podcast guests make health claims on my show?

They can say what's true and what they can back up, and the FTC's health-claims substantiation standard still applies to the claim itself even though your guest is not your advertiser in the traditional sense. If a guest states something more specific than opinion, for example a body outcome tied to a protocol or product, ask what backs it before you air the segment. If nothing does, soften the claim on air or cut the line, and keep the source you checked on record with the guest.

What is the FTC substantiation standard for health claims?

Before a claim about health, safety, or a treatment outcome runs, the advertiser needs a reasonable basis, competent and reliable evidence that actually supports the specific claim being made, not just evidence that the product exists or that the category has research behind it somewhere. The FTC does not require a fixed number of studies; it weighs whether the evidence available actually supports the sentence as spoken. On a podcast, whoever is functioning as the advertiser in that moment, guest or host reading sponsor copy, needs that basis.

Am I liable for a sponsor's ad claims if I read them on air?

You can be. Under the FTC's Endorsement Guides, the person delivering an endorsement or an ad read can carry responsibility for a claim alongside the advertiser, not instead of them. Reading a script word for word does not move that exposure onto the sponsor alone. Before you record a host-read ad with a health claim in it, ask the sponsor what backs the specific line, not the product generally, and be willing to soften or cut a line the sponsor cannot support with a source you can look at yourself.

What health claims should I refuse to read from a wellness sponsor?

Refuse any line that promises a cure, treatment, or prevention of a named disease, claims to outperform or replace a specific prescription drug, guarantees a result or eliminates a health risk entirely, or attaches a specific outcome and timeframe stated as fact with no named study behind it. These phrasings do not survive a substantiation check regardless of what paperwork the sponsor sends over. Ask for a version of the line that matches what the evidence actually supports, and read that instead.

Do I need a signed release if a guest makes a health claim on my show?

A release form and a substantiation check answer different questions. The release covers whether you have permission to record and publish the guest at all, which is usually settled by a verbal yes on tape. The substantiation check covers whether one specific claim inside that recording is safe to air. You can have full consent to publish a conversation and still need to cut a single sentence out of it. Treat consent and claims as two separate checks, not one form covering both.

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