New research from Trinity College, Dublin reveals key factors that influence vitamin D levels and suggests tailored supplementation strategies to effectively address widespread vitamin D deficiency.
The researchers suggest that their results may be important in developing personalized vitamin D supplementation guidelines.
A recent study by researchers from Trinity College Dublin has been published in the journal clinical nutritionexplores the challenges in maintaining adequate vitamin D levels among different populations. This study highlights the ongoing problem of high rates of vitamin D deficiency, despite extensive research into factors that influence vitamin D status.
“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.”
Research methods and insights
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.
References: Margaret M. Brennan, Jos Van Geffen, Michelle Van Weele, Lina Zugaga, and Rasha Schleim, “Ambient UVB rays, supplements, and other factors interact to reduce vitamin D levels.” Effects on status vary by ethnicity: a cross-sectional study” April 12, 2024 clinical nutrition.
DOI: 10.1016/j.clnu.2024.04.006
