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Published on: August 19, 2025
25-Hydroxyvitamin D, cholesterol, and ultraviolet irradiation
Laura D Carbone1, E William Rosenberg, Elizabeth A Tolley
1Department of Veterans Affairs Medical Center, Memphis, TN 38104, USA. lcarbone@utmem.edu
Metabolism: Clinical and Experimental
|May 27, 2008
Summary
This study found vitamin D levels (25-hydroxyvitamin D) positively correlate with beneficial lipoproteins and negatively with harmful ones. However, UV light increasing vitamin D did not significantly alter lipoprotein profiles in healthy adults.
Area of Science:
- Cardiovascular Health
- Endocrinology
- Dermatology
Background:
- Vitamin D deficiency is linked to cardiovascular issues.
- The relationship between vitamin D and lipid profiles requires further investigation.
- Understanding these links is crucial for public health.
Purpose of the Study:
- To examine the association between 25-hydroxyvitamin D (25[OH]D) and cholesterol/lipoprotein particles.
- To assess if UV irradiation-induced 25(OH)D increase impacts these parameters.
- To investigate these effects in healthy young adults.
Main Methods:
- Randomized trial with 51 adults exposed to UV irradiation vs. control.
- Intervention involved twice-weekly suberythemal UV exposure for 12 weeks.
- Measurements included 25(OH)D, cholesterol, and lipoprotein subfractions at baseline and 12 weeks.
Main Results:
- A positive correlation was observed between 25(OH)D and apolipoprotein A-I (Apo A-I) and lipoprotein A-I (Lp A-I).
- A negative correlation was found between 25(OH)D and the LDL/HDL ratio.
- UV irradiation increased 25(OH)D but showed no significant overall impact on lipoproteins; subgroup analysis noted changes in Apo A-II in vitamin D insufficient individuals.
Conclusions:
- Higher 25(OH)D levels are associated with a more favorable lipoprotein profile.
- UV-induced increases in 25(OH)D did not significantly alter lipoprotein composition in healthy adults.
- Further research may explore targeted interventions for vitamin D insufficiency and cardiovascular risk.
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