Personalised digital feedback to increase plant food (vegetable) intake

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This proof-of-concept interventional study compares an application that delivers personalised dietary feedback and recipe suggestions with a control condition to see if tailored digital content increases plant food consumption. Eligible adults who cook most main meals, own a smartphone and are willing to use a smartwatch will use the app and log meals daily. The study will track changes in vegetable and overall plant food intake alongside metrics of app engagement and retention. Results will inform whether personalised digital feedback can be a feasible route to improving dietary behaviours.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Healthy males and females, age at start of the study ≥ 18 and ≤ 45 years;
* Non-rejectors of Knorr (due to the recipes in the PDP application);
* Currently cooking or intending to cook (\*themselves or partner) at least one main meal at home for at least five days a week;
* Indicated desire to eat more vegetables;
* In possession of an Android or iOS-based smartphone;
* Willing to use an app to receive information and log all meals daily;
* Currently using or willing to use a smartwatch;
* Able to provide informed consent.

Exclusion Criteria:

* High reported baseline veg intake (participants need to self-report less than 50% of the UK rec / self-reported intake above the UK adult average (206 g/2.6 servings));
* Reported participation in another nutritional or biomedical trial within 1 month before the screening or during the study;
* Planned frequent travel (\>2/month) and travel to countries with time zone \>GMT +04:00 during the study period;
* Habitual consumption of \>14 units (female participants) and \>21 units (male participants) alcoholic drinks in a typical week;
* Reported start or change in use of any nicotine containing products directly preceding the study or during the study itself;
* If female, is pregnant (or has been pregnant during the last \<3 months) or will be planning pregnancy during the study period;
* If female, is lactating or has been lactating in the 6 weeks before screening and/or during the study period;
* Reported dietary habits: medically prescribed diet, slimming diet, any condition or self-prescribed diet that restricts consumption of vegetables, not used to eating at least 3 meals a day;
* Reported body mass loss/gain (\>5%) in the last 3 months before the study. Self-reported history of major depressive disorders and/or current use antidepressive/antianxiety medication;
* Clinically diagnosed sleep disorders and/or use prescribed sleep medication. Taking medication (including traditional medicines and or dietary supplements) which may pose undue personal risk or introduce bias into study measurements, as judged by the PI;
* An allergy to adhesives, which would prevent proper attachment of the CGM;
* Being an employee of any company developing personalised diet applications, including Salus Optima or Unilever.

Where it's running

• Univeristy of Bath
  Bath, Somerset, United Kingdom Recruiting

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.