Part 6/13:
Swedish women’s long-term data reveal that those who spend more time outdoors exhibit lower mortality from cancer, cardiovascular disease, and other causes—comparable to the mortality risk of smoking in some analyses.
Heart rate and immune function improve noticeably after brief outdoor programs or light therapy sessions.
The "doorway" to wonder: A 15-minute daily walk in natural sunlight may turn on mitochondrial processes, reduce inflammation, and improve mental health.
Even in cities with high pollution or cloudy environments, the long wavelengths in sunlight, such as infrared, still penetrate and confer health benefits.