Sunlight and vitamin D: a more complex equation than we think
Contrary to popular belief, spending time outdoors in summer does not automatically guarantee good vitamin D status. Several factors influence this production: latitude, season, time of day, skin color, age, and the use of sun protection.
In many European countries, optimal sun synthesis only occurs during a limited period of the year. And even then, regular exposure is necessary, at specific times of day, with a sufficient skin surface area… without neglecting protection against the sun’s harmful effects. The balance is therefore delicate.
The most common mistake: letting your guard down completely in summer
This is where the most common mistake lies: thinking that sunny days are enough and abandoning all vigilance. However, numerous observations show that even people living in very sunny regions can have insufficient vitamin D levels.
The body does not store unlimited reserves, and irregular or insufficient exposure can quickly create an imbalance. As a result, we think we’re doing the right thing, but we’re not always meeting our actual needs.
