![]() Though most studies on acrylamide levels in fries have tested French fries, this compound also forms in sweet potato fries and is what makes fries brown ( 13).Īcrylamide is classified as “probably carcinogenic” in humans. It’s formed through a reaction between the amino acid asparagine and certain sugars when starchy foods are fried and - to a lesser extent - when they’re baked or roasted ( 11, 12). In fact, fries are one of the major dietary sources of acrylamide ( 8, 9, 10). Acrylamide Forms in Both Types of FriesĪcrylamide is a potentially harmful compound discovered in 2002 in cooked, starchy foods - including fries. However, it’s likely still wise to limit your intake of deep-fried foods, as two studies suggest that small amounts of trans fat may form when oil is repeatedly used in a deep fryer ( 6, 7). Therefore, you should no longer see “partially hydrogenated oil” in ingredient lists of fries, nor should you find any trans fat listed in their nutrition information. food supply as of June 2018, though some may remain in the food supply until January 2020 as inventories are depleted ( 5). Trans fat in fries and other processed foods became a big concern in the 1990s, as studies linked it to increased heart disease risk ( 3, 4).įortunately, new FDA rules ban the use of partially hydrogenated oil - the primary source of trans fat - in the U.S. Two issues that have made news headlines over the past few decades are trans fat and acrylamide in fries. When deep-fried, a large serving of either type of fries contains a full meal’s worth of calories. Summaryĭeep-frying nearly doubles the calories in both French and sweet potato fries compared to baking. ![]() Here’s a comparison of the average calories, fat, and carbs in different size orders of deep-fried fast food fries ( 1):Ī large serving of each kind of fast food fries has as many calories as some people need in an entire meal.Īdditionally, the carb and fat content are about doubled if you choose a large rather than a small serving - regardless if they’re French or sweet potato fries. In contrast, fries at restaurants are typically deep-fried - which nearly doubles the calorie content. The table in the previous chapter shows that a 3-ounce (85-gram) serving of baked French fries has 125 calories, compared to 150 calories for the same serving of baked sweet potato fries. ![]() However, sweet potato fries are also more nutrient dense and particularly high in vitamin A. Sweet potato fries are a bit higher in calories and carbs than French fries. Vitamin A is important for your vision and immune system ( 2). The greatest nutrient difference is that French fries have no vitamin A, while sweet potato fries are high in this nutrient. Sweet potato fries are slightly higher in calories and carbs but also more nutrient dense than French fries. ![]() * Fat and sodium content may vary between different brands of either type of fries. ![]()
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