Regular, moderate exposure to sunlight (10 to 30 minutes in the middle of the day, depending on skin type) provides essential benefits that go beyond simple vitamin D synthesis, particularly for regulating the biological clock, easing blood pressure, and supporting the heart.

noli's read

The idea that natural light supports cardiovascular well-being and helps relax blood circulation is based on solid foundations. A clinical trial conducted by researcher Richard Weller in 2014 shows that exposure to UVA rays releases nitric oxide stored in the skin, which allows blood vessels to relax and naturally lowers blood pressure. Furthermore, a long-term observational study conducted by Pelle Lindqvist on nearly 30,000 people revealed that avoiding sun exposure was strongly correlated with poorer overall heart health. The regulation of our internal clock by natural daylight is also a widely validated scientific fact for promoting good sleep. However, the direct impact of the sun on improving metabolism is more nuanced, relying mainly on animal models and correlations that still need to be confirmed in humans. Finally, the proposed dosage of 10 to 30 minutes without burning is entirely consistent with recommendations for enjoying the sun safely.

the sources

1. 1Blume C, Garbazza C, Spitschan M 2019
2. 2Brown TM et al. 2022
3. 3NIH Office of Dietary Supplements 2026
4. 4Manson JE et al. 2019