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Professor Tim Noakes has changed the status of dairy products from "all-you-can-eat" to eat "with caution" after dieters complained that they weren't losing weight quickly enough.
The Sunday Times reports that Noakes admitted that cream and yoghurt had been "quietly removed" from the green list on the Real Meal Revolution website.
Noakes told the newspaper that the changes were made by the co-authors of the book, nutritionist Sally-Ann Creed, cookery writer Jono Proudfoot and chef David Grier, after dieters complained about slow losses.
According to the report, the Noakes team were putting together a statement to clear up the confusion.
Noakes has attracted both acclaim and criticism for popularising the "Noakes diet", one low in carbohydrates and high in fat.
Dieticians had expressed concern that a reduction in dairy products would lead to a lower intake of essential nutrients.
