In 1990 The British Nutrition Foundation admitted that the hypotheses that IBS, diverticulitis and colo-rectal cancer are caused by a deficiency of fibre had not been substantiated, neither have those that fibre might protect against diabetes, obesity and CHD
Complex Carbohydrates in Foods: the Report of the British Nutrition Foundation's Task Force. The British Nutrition Foundation. Chapman & Hall, 1990.
In the early nineties, the American Heart Association revises its recommended weekly allowance of eggs from three to four, on the back of studies that indicated that eggs contained 10% less cholesterol than previously thought.