Question: what are the 3 most important things to know about nutrition labels?
Answer: Serving size. Check to see how many servings the package contains. ... 
Calories. How many calories are in one serving? ... 
Carbohydrates. The total carbohydrates listed on a food label include sugar, complex carbohydrate and fiber, which can all affect blood glucose. ... 
Total fat. ... 
Saturated fat. ... 
Trans fat. ... 
Cholesterol. ... 
Sodium.