Tag: Diurnal rhythm

According to a 2021 study, serum vitamin D concentrations can vary significantly throughout the day. Can your vitamin D levels fluctuate? This normal biological process is influenced by numerous factors, including sunlight exposure, diet, age, and underlying health conditions.

Recent studies have shown that serum vitamin D levels vary significantly throughout the day, challenging the traditional view of stable concentrations. This surprising discovery that **do vitamin D levels fluctuate during the day** has important implications for both clinical testing and personal supplementation strategies.