Weiner is a fraud. His Ph.D was one of his own making. Apparently, it was the first of its kind in some cockamamie "nutritional botany." Having spoken to someone who read the handwritten thesis, it is very soft, that is, not based on hard science. Weiner claims that he is an "epidemiologist," but his doctorate was not in that field. Remember, Weiner was a "herbalist" selling snake oil cure-alls after his Berkeley degree- talk about a hippy dippy touchy feely university. His Master degrees were earned at the University of Hawaii- hardly an Ivy League school.
No doubt, Weiner is an overacheiver, but his achievements are a lot less impressive than he would have his listeners believe.
Not only the first, but as far as I know, it was the only one in the "field". And he did it in through the Anthropology department.
I'd sure like to get a copy of the dissertation. I would think he'd make it available on his web site, since he brags about it so much.