Calories in Sweet Corn: Nutritional facts for Sweet Corn Types

One hundred grams (3.5 oz) of raw yellow sweet corn kernels contain 86 calories. One hundred grams of cooked, boiled yellow sweet corn kernels (derived from an average ear) contain 86 calories (calculated from 88 calories per 102 g medium ear).

One kilogram (2.2 lbs) of raw yellow sweet corn kernels contains 860 calories. One kilogram of cooked, boiled yellow sweet corn kernels contains 860 calories.

One cup of raw yellow sweet corn kernels (164g) contains 141 calories. One cup of cooked, boiled yellow sweet corn kernels (149g ) contains 143 calories.

Sweet corn offers a variety of health benefits stemming from its unique combination of fiber, vitamins, minerals, and antioxidants. Here are some of the essential health benefits of sweet corn:

• Good Source of Dietary Fiber: Sweet corn provides a good amount of dietary fiber, particularly insoluble fiber, which aids in digestion, promotes bowel regularity, and can help prevent constipation. Fiber also contributes to a feeling of fullness.
• Rich in Antioxidants: Sweet corn contains various antioxidants, including carotenoids like lutein and zeaxanthin, which are particularly beneficial for eye health, helping to protect against macular degeneration and cataracts (Krinsky NI, Landrum JT, Bone RA., 2003, "Biologic mechanisms of the protective role of lutein and zeaxanthin in the eye"). It also contains phenolic compounds like ferulic acid.
• Provides B Vitamins: Sweet corn is a source of several B vitamins, including folate (important for cell division and DNA synthesis), thiamin (essential for energy metabolism), and niacin (supports digestive and nervous system health).
• Contains Essential Minerals: It offers minerals such as magnesium (involved in muscle and nerve function, blood sugar control), phosphorus (important for bone health), and potassium (helps regulate blood pressure).
• May Support Energy Production: The carbohydrates in sweet corn provide a readily available source of energy for the body. The B vitamins present also play a crucial role in converting food into energy.
• Naturally Gluten-Free: Sweet corn is naturally gluten-free, making it a safe and nutritious carbohydrate option for individuals with celiac disease or non-celiac gluten sensitivity.
• May Support Gut Health: The fiber in sweet corn can act as a prebiotic, feeding beneficial bacteria in the gut, which contributes to a healthy gut microbiome.
• Contains Some Protein: While not a primary protein source, sweet corn does contribute a moderate amount of plant-based protein to the diet.
• May Offer Protective Phytochemicals: Beyond common vitamins and minerals, sweet corn contains various phytochemicals that are being researched for their potential health-protective effects, including against chronic diseases.

Sweet corn is a nutritious food for most people, but there are a few considerations, including:

• High in Starch/Carbohydrates: Sweet corn is relatively high in carbohydrates, primarily starch and natural sugars. Individuals with diabetes or those closely monitoring their carbohydrate intake need to be mindful of portion sizes to manage blood sugar levels effectively.
• Potential for Digestive Issues in Some: The fiber and certain types of carbohydrates in corn can cause gas, bloating, or digestive discomfort in some individuals, particularly those with Irritable Bowel Syndrome (IBS) or specific sensitivities.
• Often Genetically Modified (GMO): A significant portion of corn grown in some countries, including the US, is genetically modified. While regulatory agencies deem GMO corn safe for consumption, some consumers prefer to avoid GMO foods for personal reasons and may seek out organic or non-GMO certified sweet corn.
• Phytic Acid Content: Like many grains and legumes, corn contains phytic acid, which can bind to certain minerals (like iron and zinc) and slightly reduce their absorption. However, this is generally not a concern for individuals consuming a balanced diet.

Yes, sweet corn is good for you when consumed as part of a balanced diet. It is a whole food that provides valuable nutrients, including dietary fiber, vitamins (especially folate, thiamin, and niacin), minerals (like magnesium and potassium), and beneficial antioxidants such as lutein and zeaxanthin. Its fiber content aids digestion and can help regulate blood sugar absorption. A study by Park Y, et al. (2008), "Dietary fiber intake and risk of colorectal cancer: a pooled analysis of prospective cohort studies," while not specific to corn, supports the role of dietary fiber from vegetables and grains in reducing colorectal cancer risk. The antioxidants in sweet corn contribute to eye health and may protect against cellular damage. While it is higher in starch than some other vegetables, its overall nutritional profile makes it a healthy addition to meals.

The calorie content of fresh sweet corn kernels, whether yellow, white, or bi-color, shows minimal variation, typically around 96 calories per 100g when cooked (boiled). Supersweet varieties, while having a higher perceived sweetness due to slower sugar-to-starch conversion, still fall within a very similar calorie range per 100g because their total carbohydrate content is comparable. The most significant calorie differences arise when comparing fresh or frozen corn to canned versions. Canned sweet corn (drained, regular pack) is generally lower in calories, around 67 calories per 100g, partly due to the packing liquid and processing. Frozen sweet corn kernels (unprepared) are around 76 calories per 100g, which becomes similar to fresh cooked corn once prepared. The highest calorie preparations would involve adding fats like butter or creamy sauces to any type of corn.

Yes, sweet corn is culinarily considered and commonly consumed as a vegetable. From a botanical standpoint, corn (Zea mays) is a type of cereal grain, and the individual kernels are the plant's fruit (caryopses), containing the seed. However, in common culinary usage and according to dietary guidelines, sweet corn is treated as a starchy vegetable due to its nutritional profile and how it's eaten. It belongs to the grass family, Poaceae.

When consumed in moderation as part of a balanced diet, sweet corn is a healthy vegetable. It provides dietary fiber, vitamins like folate and niacin, minerals such as magnesium and potassium, and beneficial antioxidants like lutein and zeaxanthin. 

Yes, the macros of sweet corn can change when cooked, though the total amount of macronutrients in the original raw portion of corn remains largely the same if nothing is added or significantly lost. The primary changes observed in corn macros per 100g serving are due to alterations in moisture content and minor nutrient transformations or losses.

When sweet corn is cooked, a few things happen to the corn macronutrients. The kernels may absorb some water, which can slightly increase their weight and volume. This water absorption effectively dilutes the concentration of macronutrients (protein, fat, carbohydrates) and calories per 100g of cooked corn compared to 100g of raw corn if the starting raw amount was less than 100g and swelled to 100g cooked. However, if you start with 100g of raw kernels and cook them, they might lose a tiny bit of weight due to some soluble solids leaching into the cooking water, or gain a bit if they absorb water without much leaching. The USDA data shows raw yellow sweet corn at 86 calories per 100g and boiled at 96 calories per 100g. This slight increase in calorie density per 100g for boiled corn can be attributed to a slight concentration of nutrients due to some water loss from the kernel itself during boiling, or differences in the initial moisture content of the raw samples used for analysis. The carbohydrate content (starch and sugar) remains the primary source of calories. Fiber content might change slightly in its measurable form or texture, but total fiber doesn't drastically decrease. Some water-soluble vitamins, like Vitamin C and some B vitamins, can be partially lost into the cooking water during boiling. Fat and protein content per 100g remain relatively stable or show minor shifts due to moisture changes.

Sweet corn, as we know it today, is a result of a naturally occurring recessive mutation in field corn (maize, Zea mays) that controls the conversion of sugar to starch within the endosperm of the corn kernel. While maize itself was domesticated thousands of years ago in Mesoamerica (likely southern Mexico) from a wild grass called teosinte, sweet corn as a distinct type with high sugar content is a more recent development in agricultural history. The Iroquois people were cultivating a form of sweet corn by the mid-1700s, and European settlers in North America adopted it. Its popularity grew significantly in the 19th and 20th centuries with the development of improved varieties.

When European colonists arrived in the Americas, they learned about maize cultivation and consumption from indigenous populations. Corn on the cob became a staple, especially during the summer harvest season. Its simplicity allows the natural sweetness and juicy texture of fresh sweet corn to shine. It's a dish emblematic of summer barbecues, picnics, and agricultural fairs in the United States, embodying a direct connection to the continent's ancient agricultural heritage and the celebrated sweetness of this particular corn variety.