For those who follow my writings, it should now be obvious that the risk of melanoma is decreased by regular sun exposure, and that the evidence for the health benefits of safe sun becomes clearer by the day. I opine that millions of lives could be saved yearly by regular, non-burning sun exposure for the entire population.
Another benefit of moderate sun exposure, or other ultraviolet radiation (UVR), is that it does not cause sufficient DNA damage to prevent efficient repair. A study published in the British Journal of Dermatology reviewed the impact of repeated low level sunlight exposures on vitamin D status and DNA damage/repair in light and brown skinned individuals. The UVR doses were equivalent to 13-17 minutes of midday exposure in the UK. The study reported that no evidence existed for these low-level exposures leading to accumulated DNA-damage, indicating that any damage was quickly repaired. The research also showed that the exposures led to sufficient vitamin D levels in the participants. In addition, it has been shown that “Regular exposure to UV leads to an almost complete disappearance of DNA damage in the basal and suprabasal layers of the epidermis, where the initiating of skin cancer occurs. It is no wonder that regular sun exposure is associated with less melanoma! Soak up some moderate, non-burning sun!
 Felton SJ, Cooke MS, Kift R, Berry JL, Webb AR, Lam PMW, de Gruijl FR, Vail A, and Rhodes LE. Concurrent beneficial (vitamin D production) and hazardous (cutaneous DNA damage) impact of repeated low-level summer sunlight exposures. Br J Dermatol. 2016 Jul 14. doi: 10.1111/bjd.14863. [Epub ahead of print]
 van der Rhee H, de Vries E, Coomans C, van de Velde P, Jan Willem Coebergh JW. Sunlight: For Better or For Worse? A Review of Positive and Negative Effects of Sun Exposure. Cancer Research Frontiers. 2016 May; 2(2): 156-183.
I found this paper that suggests, that Infra Red produced by sun protects the skin against UVA and UVB.
“One could therefore assume that early morning “sun salutation” (surya namaskar) and late afternoon procrastination on the beach are actually natural PBM treatments to prevent and repair, respectively. Consequently, if your shadow is taller than you are (in the early morning and late afternoon) you’re taking advantage of the beneficial effects of IR-A while avoiding peak (Zenithal) harmful UV. Ultimately, it is another way of being sun smart.”
Isnt the natrure really clever – it sends little UVA/B in the morning to protect us from high exposure during noon and then later afternoon the heal us from possible damage.
Thank you !
Being 42 years old I have been recently scared to death by mainstream articles that I damaged my skin and health by spending quite a lot time in the forrest and at the beach. Althoug I spent my best time in my life walking in the nature, swimming in the lake and sun bathing, I recently limited my outdoor activities to stop further skin damage and stayed home.
Reading your book, listening to your youtube stuff and yout articels helped to bring my anxiety down and to enjoy sun, water and forrest again.
Thanks a lot for what you do