Jeanne,
Cesar was right to be cautious about being involved with a “special issue” of an MDPI journal. In my experience, MDPI has no real commitment to scientific integrity, as for more than two years it has refused to correct the nonsense-based claim that there is “an inverse relationship” between sugar and obesity.
That obviously false “finding” – designed to exonerate sugar as a menace to public health – was self-published in an MDPI “special issue” by a highly conflicted “guest editor” with financial links to the sugar and sugary foods industries: http://www.australianparadox.com/pdf/RRsubmission2inquiry.pdf ; http://www.gisymbol.com/category/products/sweeteners/ ; http://www.logicane.com/Partners
Meanwhile, the highly conflicted group falsely claiming that there is “an inverse relationship” between sugar consumption and obesity also falsely claims in its pop-sci diet books that “There is absolute consensus that sugar in food does not cause [type 2] diabetes”: http://www.australianparadox.com/pdf/diabetes.pdf
Disturbingly, despite promoting a range of obviously false claims on the links between sugar, obesity and type 2 diabetes – http://www.australianparadox.com/pdf/Sugar-myths-SydUni-GI-crew.pdf – the University of Sydney’s low-GI crew receives major taxpayer support to research the prevention of….type 2 diabetes!
“PREVIEW is an acronym of PREVention of diabetes through lifestyle Intervention and population studies in Europe and around the World”: http://preview.ning.com/page/resources