Physician and skeptic Harriet A. Hall analyzed one of Greger's videos and wrote that while it was already generally accepted that plant-based diets conferred health benefits, the evidence for them "is nowhere near as impressive or definitive as the true believers think".
Physician and skeptic Harriet A. Hall analyzed one of Greger's videos, and found that many of the claims made were based on cherry-picked, poor-quality or insubstantial research. Hall wrote that while it was already generally accepted that plant-based diets conferred health benefits, the evidence for them "is nowhere near as impressive or definitive as the true believers think".