Eggs are safe for diabetes and prediabetes, with essentially no carbohydrate and no meaningful glycemic index. A large egg carries under 1 gram of carbohydrate, so glycemic index and glycemic load don't meaningfully apply. Eggs are one of the more reassuring choices on this list, and pairing them with higher-carb foods can even help soften the blood sugar response of the rest of the meal.
The numbers
A large egg contains well under 1 gram of carbohydrate, regardless of whether it's scrambled, fried, poached, or hard-boiled (USDA FoodData Central). With that little carbohydrate, both glycemic index and glycemic load are effectively not applicable, the calculations that work for rice, bread, or fruit don't produce a meaningful number for a food that's almost entirely protein and fat.
Some research points to a further benefit. In a small 12-week randomized trial published in Food & Function in 2018, 42 adults with prediabetes or type 2 diabetes who ate one egg a day saw a modest drop in fasting blood glucose compared with an egg-substitute group. It's one small study rather than a settled conclusion, and eggs' broader role in a diabetes-friendly diet depends on the rest of what's on the plate.
Why protein-forward foods like eggs matter for the rest of the meal
Protein and fat slow gastric emptying and blunt how quickly carbohydrate eaten in the same meal reaches your bloodstream. That's why eggs alongside toast tend to produce a gentler blood sugar curve than toast alone. Eggs won't cancel out a high-GI food on the same plate, but pairing protein with carbohydrate, rather than eating the carbohydrate by itself, is one of the more reliable, low-effort ways to soften a meal's overall glycemic response.
Eggs work well alongside steel-cut oats or a slice of sprouted grain toast to round out a breakfast with some protein. They're also a reasonable way to add protein to a meal built around a higher-GI side, without changing the rest of the dish.
Want to check the rest of your meal, not just the eggs?
Glycemic Genius is free to download. 10 scans per month, no credit card required.
Scan it yourself
Eggs themselves don't need a scan, there's essentially no carbohydrate to estimate, but the toast, potatoes, or juice next to them do. Glycemic Genius reads the nutrition facts panel on packaged foods and returns an AI estimate of GI and glycemic load on the spot. See our comparison of glycemic index apps for more.