New research by scientists at Trinity College, Dublin reveals the complexity of achieving optimal vitamin D status across diverse populations. Despite much research into the determinants of vitamin D, vitamin D deficiency levels remain high.This study was recently published in the journal clinical nutrition .
“We are thrilled to be working with Dr. Margaret M. Brennan, a research associate in the Department of Public Health and Primary Care at Trinity College School of Medicine and lead author.
“We hope this study highlights the large differences in vitamin D levels between ethnic groups at different northern latitudes and contributes to efforts to address vitamin D deficiency, a long-standing national health problem.”
The authors analyzed data from 500,000 participants from the UK and calculated an individual estimate of ambient ultraviolet B (UVB) levels for each person. This is the wavelength of sunlight that induces vitamin D synthesis in the body. skin.
A comprehensive analysis of the major determinants of vitamin D and their interactions reveals new insights. The first key insight is that ambient UVB is emerging as an important predictor of vitamin D status, even in places like the UK where there is relatively little sunlight. Second, age, gender, body mass index (BMI), cholesterol levels, and vitamin D supplementation significantly influence an individual’s response to UVB. For example, as your BMI increases and you get older, the amount of vitamin D you produce in response to UVB rays decreases.
Professor Lina Zugaga, Associate Professor of Epidemiology, School of Public Health and Primary Care, Trinity College School of Medicine and Principal Investigator, said:
“We believe our findings have important implications for the development of customized recommendations for vitamin D supplementation. It emphasizes the need to move from a traditional approach to a personalized strategy.”
Rasha Schlaim, a doctoral candidate in the Department of Public Health and Primary Care at Trinity College School of Medicine and co-principal investigator of the study, said:
“Our research also reveals how natural environmental factors, such as sunlight, influence our health. We hope that our approach will help future researchers and public health agencies better understand how these factors are linked to health and disease.” We hope to encourage its incorporation into research.”
The authors hope their manuscript will contribute to the ongoing discussion on vitamin D supplementation guidelines.
reference:
Brennan MM, van Geffen J, van Weele M, Zgaga L, Shraim R. Ambient ultraviolet B rays, supplements, and other factors interact to differentially impact vitamin D status according to ethnicity: a cross-sectional study. Clin Natl. 2024 Apr 12;43(6):1308-1317. doi: 10.1016/j.clnu.2024.04.006.
