DDT was banned in 1972 in the US.  The paper you cite is from 2011.<p>The fact remains that no pesticide is completely non-toxic.  Compared to other pesticides, DDT is actually quite safe.<p>If you look at the wikipedia summary of the current position on long-term toxicity, you can see that it&#x27;s not a settled issue.[1]<p><i>&quot;Overall, in spite of some positive associations for some cancers within certain subgroups of people, there is no clear evidence that exposure to DDT&#x2F;DDE causes cancer in humans.&quot;</i><p>[1]<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;DDT#Chronic_toxicity" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;DDT#Chronic_toxicity</a>