NCT05882955

Designing a Mixed-initiative Recipe Recommender App for Vegan and Vegetarian Sub-groups

• Status: Enrolling By Invitation
• Phase: N/A
• Study type: Interventional
• Enrollment: 52 (estimated)
• Sponsor: Universitaire Ziekenhuizen KU Leuven · Academic / Other
• Sex: Female
• Age: 18 Years – 50 Years
• Healthy volunteers: Accepted

Summary

The goal of this study is to test the usability and applicability of a mobile application which recommends recipes. We will recruit up to 52 vegan/vegetarian participants in Belgium, and provide them with an iDOO hydroponic plant growing unit (https://www.idooworld.com/products/idoo-20pods-indoor-herb-garden-kit-hydroponics-growing-system-with-led-grow-light) as well as seeds and plant nutrients to grow certain herbs at home. Over a period of 17 weeks, participants will be asked to consume plants from the unit by following the recipes recommended by the app. The participants will then observe changes in their iron and vitamin B12 levels by following up with their GP and report the outcomes back to the researchers at three points during the study (week 0, week 6, and week 17). In addition, the participants will evaluate the usability of the app and the recipes recommended by the app.

Detailed description

Iron is present in plant and animal-derived foods but the fractional absorption of iron from plant foods (that is the percent of iron absorbed from a consumed quantity) is often low (approx 10%) compared to iron from animal sources 25%-30%. It is therefore more challenging for vegans and vegetarians to achieve the Reference Nutrient Intake (RNI) for iron (8.7 mg/day for men over 18 and women over 50, 14.8 mg/day for women aged 18-50), and they are likely to absorb less of that iron and therefore are more likely to become iron depleted. Plants do not synthesise vitamin B12 and unless fortified, plant-derived foods and beverages do not contain any vitamin B12. the RNI for vitamin B12 in the UK is 1.5 µg/day, therefore it is crucial that vegans and vegetarians take B12 supplements if they don't consume B12-fortified foods or find other ways of incorporating this vitamin into their diets. Over a period of 17 weeks, participants will be asked to consume plants from the unit by following the recipes recommended by the app. The participants will then observe changes in their iron and vitamin B12 levels by following up with their GP and report the outcomes back to the researchers at three points during the study (week 0, week 6, and week 17). In addition, the participants will evaluate the usability of the app and the recipes recommended by the app.

Conditions

• Mobile Applications

Interventions

Type	Name	Description
BEHAVIORAL	Recipes consumption	Participants will eat one or two recipes a day for 17 weeks
BEHAVIORAL	Hydroponic unit	Participants will grow vitamin B12 biofortified plants for 17 weeks and consume (10 grams) of plant material for 11 weeks.

Timeline

• Start date: 2022-12-01
• Primary completion: 2024-12-31
• Completion: 2024-12-31
• First posted: 2023-05-31
• Last updated: 2024-06-26

Locations

1 site across 1 country: Belgium