For this assignment, I ate the lasagna as suggested in the hypothetical question, and eating a regular size portion to see what content would rate on the nutrient scale. With the ricotta cheese, mozzarella, Parmesan, meat, my fat intake was quite high on just this part of the meal, at 12.2g - percentage scale is 7.5 - 12.5 grams for fat on this item alone. The saturated fat on the lasagna was 6.3g clearly exceeding the 3.6g or below.
Since I made sure to eat healthier the rest of the day, I noticed I began to watch everything else I ate. While I didn't prohibit a cookie(s) or soda(s), the items I chose did weigh on my mind and made me more conscious of saturated fat, trans-fats and "good" fat.
In order to not worry throughout the day about the calories or fat content, I could avoid high fat intake by eating more fresh fruits, vegetables, and a diet that is more organic or a raw style. While talk of low-fat items is always in the media, there is good fat that our bodies need in order to function correctly. If I make sure the food I eat is made with those healthier versions, there would be less worry about how I am eating, what the fat content is, and how much exercise I will need to do in order to burn it all off.
I firmly agree substitutions of low-fat items for their regular high-fat version are always going to be a good choice; however, more people I know who eat low-fat items ...