To what extent can the effects of increasing healthier food availability on food selection be explained by individual food preferences?

Increasing the relative availability of healthier vs. less healthy food: Can impact be explained in terms of prior preferences?

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN27598623

Enrollment

1950

Registered

2019-12-03

Start date

2019-12-09

Completion date

Unknown

Last updated

2022-11-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Unhealthy diet Nutritional, Metabolic, Endocrine

Interventions

Participants are randomly allocated to the order in which they complete four conditions as part of the online study. The four conditions will vary in terms of the mix of healthier and less healthy foo

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Adults aged over 18 years 2. Participants currently residing within the UK

Exclusion criteria

Exclusion criteria: Dietary restrictions

Design outcomes

Primary

Measure	Time frame
1. Healthiness (healthier vs. less-healthy) of participants’ most-preferred option (measured via rankings determined from selections between each possible item pair in the first part of the study) in each of the four conditions in the online selection task 2. Correspondence between participants’ selections in each of the four conditions in the online selection task and their most-preferred options (measured via rankings determined from selections between each possible item pair in the first part of the study)	—

Measure

Time frame

1. Healthiness (healthier vs. less-healthy) of participants’ most-preferred option (measured via rankings determined from selections between each possible item pair in the first part of the study) in each of the four conditions in the online selection task 2. Correspondence between participants’ selections in each of the four conditions in the online selection task and their most-preferred options (measured via rankings determined from selections between each possible item pair in the first part of the study)

—

Secondary

Measure	Time frame
Selection of a healthier (vs. less healthy) food option in the online selection task for each of the four conditions	—

Countries

England, United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 12, 2026