Pareto, Italian economist of 19e - century, not round! Pareto's law is also called the "80/20 law"; it is the name given to an empirical phenomenon observed in certain fields, as varied as finance, sales or inventory management, which states that "80% of effects are provided by 20% of causes"!
It is likely that this law also works in our food and that 20% of our food is responsible for 80% of our overweight ... It also means that there are few vital problems and many secondary problems ... 20/80!
Far from me the idea to prove that this principle is mathematically verified in dietetics, but I am sure that it has for you a lot of good sense and that it resonates well in your brain which doubts on the quality of your food. Think carefully. Since a few hours, the seed is sown and I am sure that before the end of the day, you will have identified, without much difficulty, your enemies of well-being.
Pareto was right ... "20% of our food is responsible for 80% of our overweight ..."