THE SUN DOES NOT CAUSE CANCER! IMPORTANT: Illumination of titanium dioxide suspensions with sunlight can degrade organic materials and purify drinking water, while illumination with short wave UV kills human cells. This work shows that the distinction between “chemical” sunscreens and “physical” sunscreens, attractive though it may be to those who market them, is not based on any significant difference. Both varieties have the potential to produce reactive species that can attack biological materials (human skin cells) when they are exposed to normal sunlight… What is established is that particles of titanium dioxide as large as 220 nm can enter human cells in culture, and so it seems entirely plausible that if titanium dioxide does pass through skin it could enter cells under the skin (carrying with it the absorbed UVA and UVB radiation and hydroxyl radicals). Titanium dioxide is now being used as a new treatment for window glass because it attacks and degrades anything that touches it, thereby helping to keep windows clean. You probably don’t want to have anything attacking your skin! Small amounts of sun are healthy; overexposure is not. Instead of using sunscreens to prevent sunburn, we recommend loose fitting clothing, shady trees, and big floppy hats. Organic cotton is a good way to go! (Read more at link below)
Posted on: Thu, 26 Jun 2014 00:10:14 +0000
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