Macaroni and cheese is a comfort food for many, bringing back fond memories of childhood. Velveeta's macaroni and cheese offering is called Shells and Cheese and includes shell-shaped pasta and a cheese sauce. Before cooking it for a quick meal, take a look at its effects on your diet.

The stated serving size for Velveeta Shells and Cheese is 1 cup. The calorie count and nutrition information is calculated on this serving size, eating portions larger than this affects nutritional values.

A 1-cup serving of the Shells and Cheese contains 360 calories. It has 12 g of total fat, which includes 4 g of saturated fat, and 20 mg of cholesterol. Sodium content stands at 940 mg, while the total carbohydrate content is 49 g, including 2 g of dietary fiber and 4 g of sugars. One serving also contains 13 g of protein.

The calories in a food represent the energy you derive from it, the Food and Drug Administration reports. If you eat a 2,000-calorie diet, one serving of Velveeta Shells and Cheese amounts to 18 percent of your total daily calories. Further, fat intake should not exceed 65 g per day, meaning a serving of the pasta dish amounts to almost 19 percent of that maximum recommended intake.