Dr. Saad is mad.
Dr. Saad is mad because of something bad — specifically, the American Diabetes Association, through its journal Diabetes, is publishing expressions of concern about some of his scholarly articles, and may formally withdraw them.
Expressions of concern — like formal withdrawal of past articles — are part of the peer review process. It’s how scientific journals police themselves and call attention to questions raised about research they’ve published. Naturally they are a source of annoyance to the authors questioned, as I’ve written about in the cases of several legal threats against the blog Retraction Watch.
So when the ADA began questioning Dr. Saad’s work, he and his lawyers at Deutsch Williams did not rely on the peer review process, or on advocacy or persuasion. Don’t be ridiculous! This is America. So they sued.