Pizza deal ban may slash calories, study suggests
NCT ID NCT07368881
First seen Jun 27, 2026 · Last updated Sep 04, 2026 · Updated 1 time
Summary
This study tests whether removing price promotions (like discounts and bulk deals) from online pizza delivery menus changes what people order and eat. About 600 adults in three UK cities will order a real pizza for their household, with or without promotions. Researchers will track calories ordered and eaten per person to see if removing deals leads to healthier choices.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- removal of price-based incentives (price reductions, value pricing, bulk-buy offers) from online food delivery menus
- What this could lead to
- If it works, this could show that removing price promotions helps people choose lower-calorie meals when ordering takeaway.
- What could go wrong
- This is a small, early-stage behavioral study with no health outcomes. Results may not apply to other foods or settings, and people might compensate by eating more later.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
548 people
The number who actually took part.
- Started
-
Feb 2026
- Finished
-
Jul 2026
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Able to order and pay for a takeaway pizza for delivery today or tomorrow * Currently reside in select postcode areas * Manchester (M13 store): M1, M2, M3, M4, M5, M11, M12, M13, M14, M15, M16, M18, M19 * Liverpool (L3 store): L1, L2, L3, L4, L5, L6, L8, L13, L15 * Birmingham (B27 store): B9, B10, B11, B12, B13, B25, B26, B27, B28, B33, B90, B91, B92 * Over the age of 18 years * Report having used food delivery services in the last year Exclusion Criteria: * Partaking in a fast or other restrictive eating (e.g. for religious or health reasons) at time of participation * A previous eating disorder diagnosis * Currently on appetite-suppressing medication * Dietary restrictions/intolerances including: * Gluten-free * Dairy-free * Sugar-free
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Eating behaviour are added.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
University of Liverpool
Liverpool, Merseyside, L69 7ZA, United Kingdom
More trials for these conditions
Other studies related to the condition(s) this trial covers.