Tag: Seasonal variation

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.

It's estimated that nearly 50% of the global population has insufficient vitamin D, but the speed at which sunlight can raise vitamin D levels varies greatly depending on several key factors. While a short burst of sunlight can initiate production, the actual time it takes to see a significant change depends on more than just the clock.

Seasonal changes in energy intake are a documented phenomenon, with many people reporting shifts in their eating habits throughout the year. But **is appetite affected by season**, or are other factors at play, like hormones and light exposure? This article explores the intricate science behind why our desire for food shifts with the climate.