In recent years Great Britain has taken on the issue of the increase in the obesity rate in the population head on : from the documentaries promoted by the BBC national network on the bad habits of the English at the table (for those who chew in English I suggest you look for the documentary on youtube Fast Food Kids) to in-depth articles on food-related problems of fast food chains, to get to the discussion of a “tax” on obesity, there are many British initiatives aimed at reducing what everyone considers an overweight epidemic (the global epidemic).
As many as 71% of Britons between 45 and 54 years of age are in fact overweight or obese.

Finally, the guidelines on nutrition have changed, which are now based on the advice to regulate with meals according to the rule of 400: 600: 600 (or in general 20:30:30)  That is: no more than 400 calories per breakfast (or 20 percent of the requirement), and no more than 600 calories at lunch and dinner (or thirty percent of the requirement). To be respected even when you are not eating out. This adds up to a total of 1600 calories, plus two 100-calorie snacks for women between breakfast and lunch and lunch and dinner, and a possible margin of 200 calories in drinks (or an additional snack). In this way, a woman should consume 1800 to 2000 calories per day. For the men, the advice remains not to exceed 2500 calories per day. Which translates into a 500-calorie breakfast and lunch and dinner that shouldn’t exceed 750 calories. To which are added snacks and discretionary drinks for a maximum margin of 500 calories during the day ( source ).

The initiative was created to sensitize people to a more correct diet, taking into account the habit of frequent snacks between meals. Here’s an example for women according to the Daily Mail:
400-calorie breakfast: 40g oatmeal porridge cooked in 300ml skim milk. 12 blueberries. A 33 gram slice of toasted wholemeal bread with 5 grams of butter and a teaspoon of fruit jam.
600-calorie lunch: wholemeal sandwich with chicken salad, 25 grams of chips, 150 grams of carrots with a teaspoon of light hummus, 150 grams of skimmed strawberry yogurt (damn what a weird meal! Sorry, my comment)
600 calorie dinner :two grilled salmon fillets (about 180 g), 100 g of broccoli, 60 g of peas and 180 g of boiled potatoes. 
Two snacks with a handful of almonds. 
Now, we may not agree on the wholesomeness of this meal plan (french fries for lunch, no fruit apart from those miserable twelve blueberries for breakfast), but okay, it’s the example of a newspaper. However, the indications to “settle down” in the main meals seem good to me. I wonder: is it in Italy?