Registered dietitian Nicolette Pace, founder of NutriSource, evaluated eleven popular American breakfast cereals to identify the healthiest options and products to avoid. Americans consume about 10 to 14 lbs or 160 bowls of cereal per person each year, totaling 2.7 billion boxes sold nationwide.
While many cereal boxes claim to offer fiber and heart health benefits, Pace noted that several products contain long ingredient lists with artificial dyes, chemical preservatives, and excessive added sugar. Some brands claiming no artificial additives pack more sugar into a single cup than a Krispy Kreme donut.
Kellogg's Fruit Loops Evaluation
Kellogg's Fruit Loops received the lowest score of 10 out of 100. A 1.3 cup serving contains 150 calories, 1.5g fat, 34g carbohydrates, and 12g total sugars, all of which are added sugars. Ingredients include a corn flour blend of whole grain yellow corn flour and degerminated yellow corn flour, sugar, wheat flour, whole grain oat flour, modified food starch, hydrogenated vegetable oil, oat fiber, maltodextrin, salt, soluble corn fiber, natural flavor, red 40, yellow 5, blue 1, yellow 6, BHT, and vitamins and minerals.
Kellogg's states Froot Loops are made with natural flavors and grains as its first ingredient, describing the product as low fat and healthy with nine vitamins and minerals per serving. However, Pace labeled the cereal the worst offender, describing it as a cocktail of chemicals given to children that has propelled the Make America Healthy Again movement.
Pace questioned the continued use of synthetic dyes such as Red 40, Yellow 5, Blue 1, and Yellow 6, noting natural alternatives exist in Europe. She criticized the inclusion of BHT and hydrogenated coconut, soybean, or cottonseed oil, explaining that listing multiple oils allows manufacturers to use whichever option is cheapest on the commodities market. Pace added that modified food starch serves as a filler without nutritional value, calling the overall cereal bottom of the barrel.
Kellogg's Special K Analysis
Kellogg's Special K earned a score of 60 out of 100. A 1.25 cup serving delivers 150 calories, 0.5g fat, 29g carbohydrates, and 5g total sugars, including 4g of added sugars. The ingredient list features rice, wheat gluten, sugar, defatted wheat germ, salt, malt flavor, BHT, and 11 vitamins and minerals.
The brand states Special K features a multigrain blend of wheat and rice flakes paired with real freeze-dried strawberries, providing essential nutrients such as fiber and antioxidants. Pace noted that BHT reduces the score and criticized the use of wheat gluten as a texturizer to puff up and dry out the flakes. She added that malt flavor contributes added sugar without nutritional benefits, noting that the rapidly absorbed wheat gluten and sugars offer less delay in blood sugar response than Frosted Flakes.
General Mills Original Cheerios
General Mills Original Cheerios scored 65 out of 100. A 1.5 cup serving provides 140 calories, 2.5g fat, 29g carbohydrates, and 2g total sugars, including 1g of added sugar. Ingredients consist of whole grain oats, corn starch, sugar, salt, tripotassium phosphate, mixed tocopherols for freshness, and 11 vitamins and minerals.
General Mills claims Cheerios are made with 100 percent whole grain oats, contain 3g fiber, and can help lower cholesterol as part of a heart-healthy diet without artificial colors or flavors. Pace described the formulation as neutral and benign, praising the use of mixed tocopherols because oats naturally oxidize. However, she pointed out that corn starch acts as a filler and warned that puffed starch causes rapid absorption and high glycemic mechanics, especially since consumers rarely stick to a single serving.
Kellogg's Frosted Flakes Ratings
Kellogg's Frosted Flakes received a score of 65 out of 100. A single 1 cup serving contains 130 calories, 0g fat, 33g carbohydrates, and 12g total sugars, all 12g being added sugars. Its ingredients comprise milled corn, sugar, malt flavor, salt, iron, folic acid, and B vitamins.
Kellogg's highlights that Frosted Flakes rely on four main ingredients without artificial colors or flavors. Pace noted that while the cereal has low fiber and 12g of added sugar, its glycemic index is lower than expected because the thick sugar coating delays blood sugar response compared to plain puffed starch. She suggested Kellogg's could reduce the sugar coating without compromising the product, placing it on par with Cheerios.
Post Honey Bunches of Oats
Post Honey Bunches of Oats Honey Roasted Cereal scored 65 out of 100. A 1 cup serving contains 160 calories, 2g fat, 34g carbohydrates, and 9g total sugars, including 8g of added sugars. Ingredients include corn, whole grain wheat, sugar, whole grain rolled oats, rice, canola or soybean oil, wheat flour, malted barley flour, corn syrup, salt, molasses, honey, caramel color, barley malt extract, natural and artificial flavor, annatto extract, and BHT.
Post promotes the cereal as a wholesome breakfast with 14g whole grains, 10 vitamins and minerals, and low fat content. Pace remarked that while it contains whole grains and oats, the presence of corn syrup, artificial flavors, BHT, and interchangeable commodities oils keeps the product in the middle ranks.
Kellogg's Frosted Mini Wheats
Kellogg's Frosted Mini Wheats Bite Size Cereal scored 65 out of 100. A 0.5 cup serving of 25 biscuits provides 210 calories, 1.5g fat, 51g carbohydrates, and 12g total sugars, all of which are added sugars. Ingredients feature whole grain wheat, sugar, brown rice syrup, gelatin, reduced iron, folic acid, and BHT.
Kellogg's claims the cereal provides 10 layers of whole shredded wheat delivering 48g of whole grain and serving as an excellent source of digestive fiber. Pace stated that the dense whole wheat structure provides bulk and satiety without rapid carbohydrate absorption. However, she emphasized that the heavy sugar layer and BHT penalize the rating, noting it would rank much higher with a natural preservative.
Kellogg's Rice Krispies Assessment
Kellogg's Rice Krispies earned a rating of 70 out of 100. A 1.5 cup serving yields 150 calories, 0g fat, 36g carbohydrates, and 4g total sugars, with 4g added sugars. Ingredients contain rice, sugar, salt, malt flavor, and added vitamins and minerals.
Kellogg's highlights its four simple ingredients and absence of artificial colors or flavorings. Pace called Rice Krispies one of the most benign choices on store shelves, noting that while puffed rice provides minimal fiber or satiety, its formula remains free of artificial dyes, fillers, or oils.
Kellogg's Raisin Bran Nutrition
Kellogg's Raisin Bran received a 75 out of 100 score. A 1 cup serving contains 190 calories, 1g fat, 47g carbohydrates, and 18g total sugars, including 9g of added sugar. Ingredients include whole grain wheat, raisins, wheat bran, sugar, brown sugar syrup, malt flavor, salt, and iron.
Kellogg's promotes the product as a heart-healthy choice with crispy whole grain flakes and plump raisins. Pace noted that around eight grams of fiber per serving slows digestion and metabolic impact. She stated consumers should not fear the total carbohydrates, though she suggested Kellogg's could reduce added sugars to improve blood sugar response.
Kellogg's Corn Flakes Overview
Kellogg's Corn Flakes scored 75 out of 100. A 1.5 cup serving provides 150 calories, 0g fat, 36g carbohydrates, and 4g total sugars, all of which are added sugars. Ingredients consist of milled corn, sugar, malt flavor, salt, B vitamins, and folic acid.
Kellogg's advertises Corn Flakes as made with USA corn and containing no artificial colors or flavors. Pace highlighted that the formula remains simple and dense compared to puffed rice, avoiding hydrogenated oils and synthetic dyes to achieve a solid rating.
Kashi GO Protein and Fiber
Kashi GO Protein and Fiber Cereal Original scored 85 out of 100. A 1.25 cup serving contains 200 calories, 2g fat, 45g carbohydrates, and 9g total sugars, including 8g of added sugars. Ingredients include a puffed whole grains blend of hard red wheat, triticale grain, brown rice, and rye, alongside soy protein concentrate, corn flour, cane sugar, oat fiber, wheat bran, soy flour, honey, seven whole grains flour, salt, natural flavors, and annatto extract.
Kashi touts 12g of protein and 12g of fiber from plant-powered ingredients. Pace praised the high protein, fiber, and diverse grain profile for providing superior satiety and nutrition, though she noted the presence of added cane sugar and honey.
Post Grape-Nuts Top Ranking
Post Grape-Nuts Cereal claimed the top position with a score of 95 out of 100. A 0.5 cup serving provides 200 calories, 1g fat, 47g carbohydrates, and 5g total sugars, with 0g of added sugars. Ingredients consist of whole grain wheat flour, malted barley flour, salt, dried yeast, iron, zinc oxide, B vitamins, and folic acid.
Post highlights that Grape-Nuts delivers 0g added sugars, 7g fiber, and 52g whole grain per serving. Pace praised the cereal for its extreme purity, fiber density, and lack of BHT or artificial dyes. She recommended combining Grape-Nuts with milk or yogurt and high-fiber fruit to create a complete meal.
