Dr. Etta Finocchiaro is a specialist in dietology and food science in Turin, who has numerous publications in national and international journals and deals with diet, health and aesthetics.

On his site he talks about the color diet.

It is a diet that you have often heard of, but which is exploited and passed off as a weight loss or trendy diet. While more than just a weight loss diet, it is a very useful suggestion for varying nutrition in a global way (not for example day by day, but also from a weekly perspective) and to understand what is meant by a balanced, healthy and balanced diet. for health.

DIET OF COLORS: what it means and why it is important for health

Why is it so important to vary your diet , even to lose weight and have a fast metabolism?
There are 2 ways of varying the diet that can affect our body weight: one makes us fat and the other makes us lose weight or easily stay in the right weight.

• The variety that makes us fat is the one for which we are often victims of aperitifs or pantries too rich in “highly palatable” foods that are also industrial. If for a snack we have 5 or 6 alternatives in the fridge or in the pantry between fruit yogurt, biscuits, peanuts, chips and ice cream, our home turns into a kind of buffet open 24 hours a day and we tend to eat more than we should .
  This variety in the diet is bad.
• The variety that makes us lose weight is the one that we can use to obtain the macro and micronutrients suitable for our well-being.
  Refueling with vitamins and minerals helps our metabolism. On the contrary, any food deficiency of this type has repercussions on health and prevents the achievement of a healthy weight over time.To educate us about this second type of variety we use the makeup of colors, hence the color diet.
  That is, we learn to guarantee the micronutrients we need by getting used to varying fruits, vegetables and other foods according to these colors. The color diet is very important and has a level scientific background. The variation of the colors of natural foods allows us to reduce the risk of many diseases. Including autoimmune ones. Dr. Finocchiaro says more. For a healthy diet we must not only look at the nutrients, but also at the non-nutrients useful for our well-being. These for example are antioxidants.