Answer to Question 1
Eat at least 5 servings of a variety of non-starchy vegetables and fruits every day (make these as minimally processed as possible).
Eat relatively unprocessed cereals (grains) and/or pulses (legumes) with every meal.
Answer to Question 2
Energy density is the amount of energy (in kcal) per weight (usually 100 g) of food. Foods made primarily of highly processed ingredients often contain substantial amounts of fat or sugar and tend to be energy-dense. The evidence shows that it is not specific dietary constituents in energy-dense foods and beverages that are problematic, so much as the calories they contain. Energy-dense foods and sweetened beverages should be consumed sparingly.