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The direcly linked fukushima article is very low on numbers (do journalists think people are allergic to them or something?), but it links to the actual scientific article.
Sadly, yes, studies have shown that every time you include an equation, mathematics, or scary looking numbers in an article, you loose a percentage of the readers. Editors for popular articles (which Nature, desipte it's prestige as a science journal, is at heart) know this, and edit accordingly.