Grits: Nutrition Facts, Are Grits Healthy, and Grits vs Oatmeal

Grits are coarsely ground dried corn cooked in water or milk into a soft, creamy porridge, eaten for breakfast or as a side with shrimp, eggs or greens. So are grits healthy? On their own, a cup of plain cooked grits is a modest, low-fat starch: in USDA data it has about 180 calories, 2 grams of fiber and 4 grams of protein. Most regular and quick grits are enriched, which adds back B vitamins and iron, but they are a refined grain with little fiber. What ends up in the bowl, such as butter, cheese and salt, often matters more than the corn. This guide covers grits nutrition per cup, enriched versus unenriched grits, grits vs oatmeal, hominy grits and the pellagra history behind enrichment.

Peptide Labs does not sell grits or corn products. This article is general nutrition information, not medical advice.

What are grits?

Grits are dried corn kernels ground into coarse particles. USDA lists “corn grits, regular and quick, enriched” in both white and yellow versions, and their fiber in USDA data is low, closer to degermed corn meal than to whole-grain meal. Stone-ground grits are coarser, and some keep more of the kernel; the label says whether they are whole grain. Instant grits are precooked and dried so they only need hot water. Interestingly, the current FDA standards of identity for corn products in 21 CFR part 137 cover corn meals and corn flours, including enriched corn meals, but have no separate section for grits, so the ingredient list is the place to see what you are getting.

Hominy grits are made from hominy, corn that has been soaked and cooked in an alkaline solution such as lime water before grinding. That process, called nixtamalization, changes the texture and flavor and, as explained below, makes the corn’s niacin more available. On a label, “hominy” or “lime-processed corn” signals nixtamalized corn, while “degermed corn” signals plain milled corn.

Grits nutrition: USDA values per cup

The table uses USDA FoodData Central SR Legacy entries for grits cooked in water without salt, with cooked oats for comparison. Values are per USDA cup weight, so the grams differ slightly between rows; % DV uses the FDA Daily Values.

A few details stand out. Enriched white grits supply about 13% of the niacin Daily Value, 18% of thiamin and 14% of selenium per cup in USDA data, with almost no sugar and very little fat. Potassium and magnesium are low. The instant grits row comes from a branded instant entry that is heavily fortified with iron and also carries about 497 milligrams of sodium per prepared cup in the USDA listing, 22% of the Daily Value, even though no salt was added during preparation. Flavored instant packets with cheese or bacon flavor vary, so read the Nutrition Facts label.

Enriched vs unenriched grits

Milling off the bran and germ removes much of the corn’s natural fiber, B vitamins and minerals. Enrichment adds some of them back. Under 21 CFR 137.260, enriched corn meals must contain thiamin, riboflavin, niacin, folic acid and iron within set ranges, and may contain vitamin D and calcium. The difference shows up clearly in the USDA dry entries, per 100 grams:

• Enriched white grits, dry (171654): folate 66% DV, thiamin 106% DV, niacin 28% DV, iron 17% DV.
• Unenriched yellow grits, dry (171670): folate 1% DV, thiamin 11% DV, niacin 8% DV, iron 6% DV.

The Dietary Guidelines for Americans 2020-2025 list corn grits among refined grains, next to white rice, pasta and cream of wheat, and say refined-grain choices should be enriched. With stone-ground or specialty grits, check whether the label says enriched; many are not, which is fine as long as you know what you are getting. Our guide to refined grains and added sugars explains the broader picture.

Are grits healthy?

Grits are neither a health food nor a junk food. Here is a fair summary of the evidence and the numbers:

• In their favor: plain grits are low in fat and sugar, naturally free of gluten, and enriched versions supply folate, thiamin, niacin and iron. They are also inexpensive and easy to pair with protein foods.
• Against them: regular and quick grits are a refined grain with little fiber, and the Dietary Guidelines advise that at least half of total grains be whole grains. The 2025-2030 edition says to prioritize fiber-rich whole grains.
• The toppings: butter, cheese, cream and salt can add more saturated fat and sodium than the grits themselves. Our low sodium foods guide has label-reading tips.
• Fiber: about 2 grams per cup is low. Adding beans, greens or vegetables raises it; see high fiber foods and how much fiber you need per day.

Corn grits are mostly starch, so people watching carbohydrates for diabetes or another reason can talk with their clinician or a registered dietitian about how grits fit their plan. Our low glycemic foods guide explains how fiber, protein and fat in a meal change the blood sugar response, and the starchy vegetables guide covers corn as a vegetable.

Grits vs oatmeal

Grits vs oatmeal is a common breakfast question. Per cooked cup in USDA data, the two have similar calories, but oats bring about twice the fiber, more protein, more than three times the magnesium, and much more zinc, selenium and manganese. Enriched grits win on folate and niacin because those nutrients are added. Oats are a whole grain; regular grits are refined. Oats also contain beta-glucan, a soluble fiber that our oats guide covers in detail. If you prefer grits, stone-ground or whole-grain versions, or a bowl topped with eggs or beans, narrow the gap. For more ideas, see our high protein breakfast guide.

Nixtamalization, hominy and the pellagra story

Corn holds a special place in nutrition history. A 2021 review in Frontiers in Nutrition explains that the niacin in corn is not readily available to people without suitable processing, and that a diet short on niacin and its precursor tryptophan causes pellagra, with inflamed skin, diarrhea, dementia and mouth sores. In the Americas, nixtamalization, a traditional practice in Native American cultures, solved this by releasing bound niacin.

In the US South, pellagra became an epidemic in the early 1900s. A 2022 review in Epidemiologia describes how Joseph Goldberger of the US Public Health Service showed in 1914-15 that improving the diet at orphanages and an asylum stopped new cases, although full acceptance of the dietary cause took until World War II. The same review cites evidence that a new corn-milling machine introduced just after 1900 produced cheap, widely shipped corn meal low in a key nutrient, while traditional grindstones left some of the germ in. Enriched corn products today carry added niacin, and our niacin guide covers the vitamin itself. The sibling polenta guide tells the Italian side of the story.

Grits and gluten

Under the FDA gluten-free rule (21 CFR 101.91), gluten-containing grains are wheat, rye, barley and their crossbreeds, so corn is not one of them, and NIDDK lists corn flour among gluten-free foods. NIDDK also warns that cross-contact can happen when foods are grown, processed, stored or prepared. A 2010 pilot study of 22 naturally gluten-free grains, seeds and flours without a gluten-free label found 7 with gluten at or above 20 parts per million, the FDA limit. People with celiac disease should look for grits labeled gluten-free and ask their clinician or dietitian about questions. Other gluten-free grains include millet, sorghum and quinoa.

Frequently Asked Questions

Questions about a label? Contact us or read our Buyer’s Guide. Food comes first; follow the label and ask a healthcare provider before starting a supplement, especially if you take medicines, are pregnant or have a food allergy. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Last reviewed October 2026.

Related guides: Polenta: Nutrition, Whole-Grain Choices and Polenta vs Grits, Cornmeal: Nutrition, Types and Cornmeal vs Corn Flour, Refined Carbs vs Whole Grains: Simple and Complex Carbs Explained.