There is no single, official gram limit for sugar specifically set for people with diabetes. The American Diabetes Association does not publish a fixed daily sugar cap. Instead, most guidance focuses on total carbohydrates, since all carbs (not just sugar) raise blood glucose. That said, a practical starting point comes from the World Health Organization, which recommends all adults keep free sugars below 10% of total daily calories, with an ideal target below 5%. On a 2,000-calorie diet, that translates to less than 50 grams and ideally under 25 grams of added sugar per day.
Why There’s No Single Number
If you were hoping for a clean answer like “30 grams,” the reason it doesn’t exist is that sugar management in diabetes is personal. Your ideal intake depends on your medication, activity level, body weight, and how your blood sugar responds to different foods. A person on insulin has different flexibility than someone managing type 2 diabetes through diet alone.
The more important number for most people with diabetes is total carbohydrate intake. Sugar is one type of carbohydrate, but so are starches and fiber. A bowl of white rice contains almost no sugar on the label, yet it can spike blood glucose just as sharply as a candy bar. This is why diabetes nutrition guidelines center on carb counting rather than sugar counting alone. Most people with type 2 diabetes are advised to aim for roughly 45 to 60 grams of carbohydrates per meal, though some do better with less. Your total daily carb target is something to work out with your care team based on your glucose patterns.
The 25-Gram Target for Added Sugar
While the WHO guideline of under 25 grams of added sugar per day applies to all adults, it’s an especially useful benchmark if you have diabetes. That 25 grams is about 6 teaspoons. To put that in perspective, a single 12-ounce can of regular soda contains roughly 39 grams, already exceeding the full day’s target in one drink.
The 2025 ADA Standards of Care reinforce this direction without naming a gram number. The latest guidance recommends drinking water instead of beverages with high-calorie sweeteners, incorporating more fiber and plant-based protein, and following an overall evidence-based eating pattern. The emphasis is on food quality, not just hitting a sugar number. Swapping a sugary yogurt for plain yogurt with berries, for example, does more for blood sugar stability than simply counting whether you stayed under a threshold.
Added Sugar vs. Natural Sugar
Not all sugar on a food label works the same way in your body. A cup of strawberries contains about 7 grams of sugar, but it also delivers fiber, water, and micronutrients that slow absorption and blunt the glucose spike. A tablespoon of honey has about 17 grams of sugar with no fiber to soften the impact. Both register as “sugar” on a nutrition label, but they behave very differently in your bloodstream.
When nutrition guidelines talk about limiting sugar, they mean “free” or “added” sugars: the sweeteners added during processing or cooking, plus honey, syrups, and fruit juice concentrates. The sugar naturally present in whole fruit, plain milk, and vegetables is less of a concern because it comes packaged with fiber or protein that slows digestion. That said, fruit juice (even 100% juice) counts as a free sugar because the fiber has been removed. A glass of orange juice hits your blood sugar almost as fast as soda.
How Sugar Fits Into Carb Counting
If you’re already counting carbs, you don’t need to count sugar separately. Stanford Health Care’s guidance on carbohydrate counting notes that the grams of sugar listed on the Nutrition Facts panel are already included in the total carbohydrate number. So if a food has 30 grams of total carbs and 12 grams of sugar, those 12 grams aren’t in addition to the 30. They’re part of it.
This matters because some people with diabetes avoid a food when they see sugar on the label, even if the total carb count fits their meal plan. A better approach is to look at total carbohydrates first, then check how much of that comes from fiber (which you can subtract, since fiber doesn’t raise blood sugar). Sugar alcohols, commonly found in “sugar-free” products, also get subtracted from total carbs because they have minimal effect on blood glucose. So the practical formula is: total carbs minus fiber minus sugar alcohols equals your net carb impact.
One caution with sugar alcohols: while they don’t spike glucose significantly, consuming large amounts can cause bloating, gas, and diarrhea. Start small if you’re new to products sweetened with them.
Spotting Sugar on Food Labels
Packaged foods marketed as “healthy” or even “diabetic-friendly” often contain added sugars under names you might not recognize. Researchers at UC San Francisco have identified at least 61 different names for sugar used on ingredient lists. Some of the less obvious ones include barley malt syrup, evaporated cane juice, maltodextrin, rice syrup, and fruit juice concentrate. If you see any ingredient ending in “-ose” (dextrose, maltose, fructose, sucrose), that’s a sugar.
Since 2020, U.S. Nutrition Facts labels are required to list “Added Sugars” as a separate line under Total Sugars. This is the most useful number for people with diabetes. It tells you exactly how much sweetener was put into the product during manufacturing, separated from the sugars naturally present in ingredients like milk or fruit. Aim to keep your daily total from that line under 25 grams.
Practical Ways to Reduce Sugar Intake
The biggest sources of added sugar for most people aren’t desserts. They’re beverages (soda, sweet tea, flavored coffee drinks, juice), condiments (ketchup, barbecue sauce, salad dressing), and breakfast foods (flavored oatmeal, granola, cereal, yogurt). Swapping sweetened drinks for water, seltzer, or unsweetened tea is the single highest-impact change you can make. A person drinking two sodas a day who switches to water eliminates nearly 80 grams of sugar immediately.
For packaged foods, compare brands. Two seemingly identical pasta sauces can differ by 8 or 10 grams of sugar per serving. Choose plain versions of yogurt, oatmeal, and nut butters, then add your own flavor with whole fruit, cinnamon, or a small drizzle of something you measure yourself. When you control the sweetener, you almost always use less than the manufacturer would.
Reducing added sugar doesn’t mean eliminating sweetness entirely. A square of dark chocolate (about 1 to 2 grams of sugar), a handful of berries, or a small portion of fruit with nut butter can satisfy a craving without derailing your blood glucose. The goal is staying aware of how much you’re consuming and keeping added sugars within a range that supports stable glucose levels throughout the day.