I would not just assume that sea salt has zero downside: http://www.pbl.nl/sites/default/files/cms/publicaties/650010033.pdf http://www.pbl.nl/sites/default/fil

I would not just assume that sea salt has zero downside: http://www.pbl.nl/sites/default/files/cms/publicaties/650010033.pdf http://www.pbl.nl/sites/default/files/cms/publicaties/650010... "In the Netherlands a considerable part of PM10 is of natural origin. On a yearly average basis we have quite a large contribution of sea salt: 4 - 7 μg/m3. ... It would be wrong to conclude that this natural contribution does not have any associat- ed health effects. "