Nutritionist Zoe Harcombe, famous for inventing the Harcombe method to lose weight in the 1990s (click here to read her diet) allegedly attacked the British government by claiming that the food guidelines, which in Great Britain led to the EatWell program, have been moved. from economic interests. According to Harcombe , the guidelines, similar to those of the Mediterranean food pyramid (which in turn originates from American research, those of Ancel Keys on the study of the seven countries), penalized proteins in favor of a diet too rich in sugars. In fact, 37 percent of the dish recommended by the British should be composed of complex carbohydrates, 12 percent protein, 39 percent fruit and vegetables, eight percent dairy or skimmed dairy products, one percent from unsaturated fats, 3 percent from foods or drinks rich in salt and sugar.

The result? Try to eat 40 percent (37 + 3) of starchy foods, to which are added the sugars of 39 percent of fruits and vegetables (let’s say half of them are fruit): you get over 60% of carbohydrates, with low fat content and a mediocre protein content.
The result, according to Harcombe, would be a diet that is too high in carbohydrates compared to the amount of proteins and fats that are unfairly demonized. 

Some of Harcombe’s arguments are indeed reasonable, and I propose again in my translation what she explained to the British newspapers: “The advice to concentrate almost half of the plate with foods based on carbohydrates to the detriment of proteins is not supported by any scientific evidence; the requirement of having to eat five meals a day, mostly carbohydrates is not supported by any scientific evidence; the same there is no scientific evidence to prefer a low-fat diet; there is no scientific evidence to recommend drinking eight glasses of water a day or using only condiments based on low unsaturated fats “.
Which is true. The studies carried out are only those of a retrospective observational type(you have a health problem, I try to understand, from the answers you give me to questionnaires or direct interviews, what you ate: and then I correlate the two) and, as regards the eight glasses of water a day, there are no Education. At all. But a recommendation that comes from Nestlè and then has been rebounded from doctors to specialists until today. 

According to Harcombe, this imbalance is due to economic interests; what one wonders is why even the Mediterranean food pyramid has very similar principles. Look here.