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Publication database KNMI

The publication database contains the (co-)authored publications in scientific journals, KNMI reports and other publications

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Genome-wide gene-environment interaction study uncovers 162 vitamin D status variants using a precise ambient UVB measure
Vitamin D status is influenced by genetic and environmental factors-primarily sun exposure. Using...
Shraim, R., Timofeeva, M., Wyse, C., van Geffen, J., van Weele, M., Romero-Ortuno, R. Lopez, L.M., Kleber, M.E., Pilz, S., März, W., Fletcher, B.S., Wilson, J.F., Theodoratou, E., Dunlop, M.G., McManus, R. and Zgaga, L. | Nature Communications | 2025 | 16
Prevalence and determinants of profound vitamin D deficiency (25-hydroxyvitamin D <10 nmol/L) in the UK Biobank and potential implications for disease association studies
Background 25-hydroxyvitamin D (25OHD) is the principal biomarker of vitamin D status. Values be...
Shraim, R., Brennan, M.M., van Geffen, J. and Zgaga, L. | Journal of Steroid Biochemistry and Molecular Biology | 2025 | 250
Ambient ultraviolet-B radiation, supplements and other factors interact to impact vitamin D status differently depending on ethnicity: a cross-sectional study
Background & aims Many determinants of vitamin D status have been well-described, yet supple...
Brennan, M.M., van Geffen, J., van Weele, M., Zgaga, L. and Shraim | Clinical Nutrition | 2024 | 43
The association between ambient UVB dose and ANCA-associated vasculitis relapse and onset
Background The aetiology of ANCA-associated vasculitis (AAV) and triggers of relapse are poorly ...
Scott, J., Havyarimana, E., Navarro-Gallinad, A., White, A., Wyse, J., van Geffen, J., van Weele, M., Buettner, A., Wanigasekera, T., Walsh, A., Aslett, L., Kelleher, J.D., Power, J., Ng, J., O'Sullivan, D., Hederman, L., Basu, N., Little, M.A. and Zgaga, L | Arthritis Research & Therapy | 2022
Comprehensive Analysis of Seasonal and Geographical Variation in UVB Radiation Relevant for Vitamin D Production in Europe
Dermal synthesis, following sun exposure, is the main source of vitamin D. This study characteriz...
Khanna T, Shraim R, Zarkovic M, van Weele M, van Geffen J, Zgaga L. | Nutrients | 2022 | 14
Sunshine is an important determinant of vitamin D status even among high-dose supplement users: secondary analysis of a randomised controlled trial in Crohn's disease patients
Sunshine is considered to be the most important source of vitamin D. Due to an increased risk of ...
F O'Sullivan, T Raftery, M van Weele, J van Geffen, D McNamara, C O'Morain, N Mahmud, D Kelly, M Healy, M O'Sullivan, L Zgaga | published | Photochem. and Photobiol. | 2019 | 95
Annual ambient UVB at wavelengths that induce Vitamin D synthesis is associated with reduced oesophageal and gastric cancer risk: a nested case-control study
Vitamin D has been shown to be beneficial at reducing the risk of cancer, however studies examini...
F O'Sullivan, JHG van Geffen, M van Weele, L Zgaga | published | Photochem. and Photobiol. | 2018 | 94
Ambient UVB dose and sun enjoyment are important predictors of vitamin D status in an older population
Background: UVB-induced skin synthesis is considered the key source of vitamin D, yet exposure to...
O'Sullivan, Laird, Kelly, JHG van Geffen, M van Weele, M McNulty, M Hoey, M Healy, M McCarroll, M Cunningham, M Casey, M Ward, M Strain, M Molloy, M Zgaga | published | J. Nutrition | 2017 | 147