Although she was very popular with the public in general in the 1970s, none of her books were recommended by any significant nutritional professional society of the time. Independent review of the superficially impressive large number of citations to the scientific literature in her books found that the citations often either misquoted the scientific literature or were contradicted by or unsupported by the proposed citation, and that errors in the book averaged at least one per page. One review noted that only 30 of 170 citations in a sample taken from one chapter accurately supported the assertions in her book. The 1969 White House Conference on Food, Nutrition, and Health labelled her probably the single most harmful source of false nutritional information.