Errors in our scientific beliefs are not always due to Big Industry and its evil intent. Science is a human enterprise, constrained by human foibles. Sometimes we just get it wrong.
Results of a recent prospective study of food intake in 18 countries —including North and South America, Europe, and Asia — reports that an increased intake of fruits, vegetables and legumes is associated with a lower risk of death. But the same study was analyzed to see what effect different dietary nutrients might have and found that it's carbs, not fat that seem to be dietary villains.