Advancing vitamin D status

Vitamin D deficiency remains common worldwide, even among adults who spend time outdoors or try to eat well. We have launched a new pilot study to better understand how vitamin D status changes over time when intake is carefully controlled and monitored, while everyday sources of vitamin D are taken into account.

The study will examine how eight weeks of supplementation with two different vitamin D₃ products will affect vitamin D status in otherwise healthy adults with below-optimal vitamin D levels. While the study directly compares two formulations, its broader relevance lies in placing supplementation in the context of natural vitamin D exposure from daily life, including diet and sunlight.

This carefully controlled study aims to provide clear and practical insights into vitamin D supplementation, safety, and real-world relevance for adults with low vitamin D levels. It is part of a broader research program exploring the role of vitamin D in human nutrition, including its potential to influence the metabolism and turnover of other nutrients. The trial will be registered at ClinicalTrials.gov, ensuring full transparency and compliance with international research standards.