You 100% spot on KCvale!!!
Sun creates vitamin D I do believe and a vitamin D deficiency has been linked to high bp as well as depression and several other stress causing ailments .
I bet they will find out in the coming years that the chemicals in the lotions people put on their bodies to ward off the uv rays is more harmful to them it than the sun is ..especially in kids Remember asbestos and how great that was back in the day .
Actually it is the NO in the skin not vitamin D from it...
Excerpts From:
http://www.sciencedaily.com/releases/2014/01/140117090139.htm
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Research carried out at the Universities of Southampton and Edinburgh shows that sunlight alters levels of the small messenger molecule, nitric oxide (NO) in the skin and blood, reducing blood pressure.
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The results suggest that UVA exposure dilates blood vessels, significantly lowers blood pressure, and alters NO metabolite levels in the circulation,
without changing vitamin D levels. Further experiments indicate that pre-formed stores of NO in the upper skin layers are involved in mediating these effects. The data are consistent with the seasonal variation of blood pressure and cardiovascular risk at temperate latitudes.
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Avoiding excess sunlight exposure is critical to prevent skin cancer, but not being exposed to it at all, out of fear or as a result of a certain lifestyle, could increase the risk of cardiovascular disease. Perhaps with the exception of bone health, the effects of oral vitamin D supplementation have been disappointing.
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Another story about sunlight and BP.
http://www.medicalnewstoday.com/articles/271411.php
It's a bit nippy here today but mid 70's next week for some more winter sun bathing and as a habit in all my years I never have have used sun screen and no skin cancer.