Sun exposure for vitamin D sufficiency in skin type V

Sun exposure levels for provision of vitamin D sufficiency in people of skin type V living in the UK

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN07565297

Enrollment

185

Registered

2010-05-12

Start date

2008-09-01

Completion date

Unknown

Last updated

2015-01-13

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

Conditions

Topic: Skin

Interventions

1. Intervention study: 1.1. Subjects were given simulated summer's sun exposures from a constant UVR dose via a full body cabinet, 3 times a week for 6 weeks. The subjects were split into 6 groups rec

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Aged 18 - 65 years old 2. South Asian descent 3. Male or female 4. Sun-reactive skin type V 5. Ambulant

Exclusion criteria

Exclusion criteria: 1. History of skin cancer (intervention study) 2. History of a photosensitivity disorder (both) 3. Regular sunbathing/use of sunbeds (observational study) 4. Sunbathing/use of sunbeds in the past 3 months (intervention study) 5. Taking photoactive medication (interventional) 6. Pregnant or breast-feeding (interventional)

Design outcomes

Secondary

Measure	Time frame
Interventional study: 1. The % numbers reaching optimal levels of vitamin D following simulated summer sun exposure 2. Baseline winter levels of vitamin D deficiency, sufficiency and optimal levels	—

Primary

Measure	Time frame
1. Intervention study: % number of people reaching sufficient levels of vitamin D following simulated summer exposure 2. Observational study: the post summer vitamin D level required to maintain sufficiency throughout the winter months	—

Countries

United Kingdom

Outcome results

None listed

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