The relationship between vitamin D levels and cardiovascular risk factors in offshore workers

Background: Numerous studies have linked vitamin D deficiency with cardiovascular diseases. Offshore workers have distinct characteristics of work such as irregular work-rest cycles and variable nutritional intake that may contribute to fluctuations in vitamin D status. Studying the connection between vitamin D levels and cardiovascular risk factors in offshore population is of significant relevance to occupational health management. 
Objective: Using a cross-sectional design, this study aimed to determine the association between vitamin D levels and cardiovascular risk factors, namely age, systolic and diastolic blood pressure, fasting blood sugar, HbA1c, low density lipoprotein, high density lipoprotein, total cholesterol, triglycerides, and body mass index in an offshore worker population in the Middle East.
Methods: Data were collected over a six-month period from patient records at an occupational health clinic, encompassing socio-demographic variables, vitamin D measurements, and cardiovascular risk profiles. Pearson correlation was used to assess the strength of associations, while multiple linear regression was conducted to evaluate the combined influence of the cardiovascular risk factors on vitamin D levels. 
Results: 249 patients were included in the analysis. The correlation between vitamin D levels and cardiovascular risk factors were as follows: age (weak, r = 0.12), HDL (negligible, r = 0.01), LDL (negligible, r = -0.05), HbA1c (negligible, r = -0.07), systolic blood pressure (negligible, r = -0.10), fasting blood sugar (weak, r = -0.11), triglycerides (weak, r = -0.12), total cholesterol (weak, r = -0.13), diastolic blood pressure (weak, r = -0.13), and BMI (weak, r = 0.14). Multivariate regression analysis revealed that cardiovascular risk factors exhibited a weak predictive capacity for vitamin D levels. 
Conclusions: The associations between vitamin D levels and the evaluated cardiovascular risk factors are generally negligible to weak.