We explored how serum levels of vitamin D3, specifically 25(OH)D, might influence various indicators related to cardiovascular health. Using data from the National Health and Nutrition Examination Survey (NHANES) spanning 2015 to 2018, we analyzed results from 4,727 adults aged 20 and above.
Our investigation focused on several key factors such as body mass index, high-density lipoprotein cholesterol, systolic blood pressure, and cholesterol levels. The results showed that even a slight increase in vitamin D3 levels was associated with positive changes across these cardiovascular risk factors. For instance, we found that a 1 nmol/L increase in serum 25(OH)D led to small but significant improvements in several indicators.
Notably, the effects varied by gender and age, with women showing greater sensitivity to vitamin D3 levels compared to men, while older adults were less responsive. However, our findings highlighted a complex relationship, revealing nonlinear patterns that suggest additional research is necessary to fully understand these dynamics. While the results display promising associations, they do not confirm that vitamin D3 treatment can directly improve cardiovascular disease outcomes.