Can an increase in fruit and vegetable intake improve/change your skin colour and appearance?

Impact of high versus low carotenoid intakes from vegetables and fruit on skin colour and appearance: a randomised cross-over trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN86297454

Enrollment

Registered

2013-11-20

Start date

2013-10-01

Completion date

Unknown

Last updated

2019-02-11

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

Conditions

Young women from the general population not following any dietary restriction due to medical conditions Nutritional, Metabolic, Endocrine

Interventions

Participants will be required to be in the study for 11 weeks. There will be two interventions phases (4 weeks each) and a 2-week washout period. In phase 1 the participants will be ra

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 1. Females aged 18-30 years 2. Low fruit and vegetable consumption (vegetables with evening meal <3-4 per week and <5-6 pieces fruit per week) 3. Able to attend the Callaghan campus on four occasions (baseline and 4 weeks, cross over) 4. Proficient in English 5. Abstain from using tanning/lotions/sprays and sunbathing for 11 weeks

Exclusion criteria

Exclusion criteria: 1. BMI <18.5kgm2 2. Current smoker 3. Current eating disorder 4. Liver disease 5. Special diet: Coeliac, Fermentable, Oligo-, Di-, Mono-saccharides And Polyols (FODMAPS), low fibre diet 6. Metabolic disorders: type 2 diabetes, hypertension/hypotension, renal disease 7. Cardiovascular disease (CVD) 8. Gastrointestinal tract disease 9. Currently pregnant or lactating

Design outcomes

Primary

Measure	Time frame
Skin carotenoid content as measured by spectrophotometer. Time point: Baseline, Week 5. Week 7 and Week 11	—

Secondary

Measure	Time frame
1. Plasma carotenoids: fasting blood sample (2 x 2 ml ETDA), time point: baseline, week 5, week 7 and week 11 2. Daily fruit and vegetable intake: 2.1. Australian Eating Survey 2010, 137-item semi-quantitative food frequency questionnaire, time points: baseline, week 5, week 7 and week 11 2.2. 24-hour recall, time points: baseline, week 5, week 7 and week 11 3. Quality of life (SF12), time points: baseline, week 5, week 7 and week 11	—

Measure

Time frame

1. Plasma carotenoids: fasting blood sample (2 x 2 ml ETDA), time point: baseline, week 5, week 7 and week 11 2. Daily fruit and vegetable intake: 2.1. Australian Eating Survey 2010, 137-item semi-quantitative food frequency questionnaire, time points: baseline, week 5, week 7 and week 11 2.2. 24-hour recall, time points: baseline, week 5, week 7 and week 11 3. Quality of life (SF12), time points: baseline, week 5, week 7 and week 11

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Countries

Australia

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026