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Health Psychol. 2014 Jan;33(1):99-102. doi: 10.1037/a0032322. Epub 2013 Mar 25.

A randomized controlled trial of an appearance-based dietary intervention.

Author information

1
School of Medicine.
2
Perception Lab, School of Psychology.

Abstract

OBJECTIVE:

Inadequate fruit and vegetable consumption precipitates preventable morbidity and mortality. The efficacy of an appearance-based dietary intervention was investigated, which illustrates the beneficial effect that fruit and vegetable consumption has on skin appearance.

METHODS:

Participants were randomly allocated to three groups receiving information-only or a generic or own-face appearance-based intervention. Diet was recorded at baseline and 10 weekly follow-ups. Participants in the generic and own-face intervention groups witnessed on-screen stimuli and received printed photographic materials to illustrate the beneficial effect of fruit and vegetable consumption on skin color.

RESULTS:

Controlling for baseline diet, a significant effect of intervention group was found on self-reported fruit and vegetable intake among 46 completers who were free of medical and personal reasons preventing diet change. The own-face appearance-based intervention group reported a significant, sustained improvement in fruit and vegetable consumption whereas the information-only and generic appearance-based intervention groups reported no significant dietary changes.

CONCLUSIONS:

Seeing the potential benefits of fruit and vegetable consumption on own skin color may motivate dietary improvement.

TRIAL REGISTRATION:

ClinicalTrials.gov NCT01511484.

PMID:
23527517
DOI:
10.1037/a0032322
[Indexed for MEDLINE]
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