These are all diet tips I have been told/friends of mine have been told by Brazilians. You be the judge...
1) The crust of bread is good for you but the middle, soft part is fattening.
2) Mangoes and acai should be avoided because they are too high in calories (this was told to me by someone with a plate full of deep fried salgados in front of them...)
3) When you are on a diet you should eat minas cheese and processed turkey breast with bread for breakfast.