Dr. Varady has done extensive research on alternate day fasting, intermittent fasting, and other strategies, both in mice and in humans.
I complained about "mumbo jumbo" in lay analysis of scientific research before, so I won't engage in it here. Varady did publish a diet book based on her research.
The main thesis is that in alternate day fasting, people don't eat back 175% or 200% of the calories to make up for fast days.
She is featured in Eat, Fast, and Live Longer, the fasting documentary by Michael Mosley. I'm not sure this was part of the dynamic, but I felt a bit like Dr. Mosley stole the fasting thunder from Varady - popularizing his work in his own book, while the basis was entirely her research.
