How Much Added Sugar Per Day Is Too Much?

Not all sugar in food is the same, and that distinction is the key to making sense of every sugar guideline. The sugar that occurs naturally inside whole foods, such as the fructose in a piece of fruit or the lactose in plain milk, comes packaged with fiber, water, vitamins, and minerals. Added sugar is different: it is the sugar and syrup added to foods and drinks during processing or preparation, or stirred in at the table. The Centers for Disease Control and Prevention draws exactly this line, separating added sugars from the naturally occurring sugars in milk, vegetables, and fruits. When health bodies set a daily limit, it is the added sugar they are targeting, not the natural sugar in an apple or a glass of milk.

This guide is general and educational. It explains how added sugar differs from natural sugar, what the main health authorities recommend as a daily limit and how firm each of those recommendations is, where most added sugar actually comes from, what the evidence says about why excess matters, and how to read the Added Sugars line that now appears on Nutrition Facts labels. It deliberately avoids alarmism: the goal is a measured, sourced picture rather than the claim that sugar is a poison.

The essentials at a glance

• The daily limits apply to added sugar, not the natural sugar in whole fruit, vegetables, or plain milk (CDC).
• The American Heart Association suggests no more than about 36 grams (9 teaspoons) of added sugar a day for men and about 25 grams (6 teaspoons) for women (AHA).
• The World Health Organization recommends keeping free sugars under 10 percent of total energy as a strong recommendation, with a further cut to below 5 percent (about 25 grams) as a conditional one (WHO 2015).
• The Dietary Guidelines for Americans 2025-2030 advise that no amount of added sugars is recommended as part of a healthy diet, with no single meal exceeding about 10 grams of added sugars, and no added sugars for children through age 10 (DGA 2025-2030).
• Sugar-sweetened beverages such as soda are the single leading source of added sugar in the typical American diet (CDC; Harvard; Malik and Hu 2022).
• The updated Nutrition Facts label now lists an Added Sugars line with a percent Daily Value, and about 4 grams of sugar equals roughly 1 teaspoon (FDA; Harvard).

What the recommended limits actually say

Three authorities set the limits most often quoted, and they express them in different units, so it helps to take each in turn. The American Heart Association frames its limit in grams and teaspoons by sex. It states that men should consume no more than 9 teaspoons (36 grams, or 150 calories) of added sugar per day, and that women should consume no more than 6 teaspoons (25 grams, or 100 calories) per day. These are general population figures for adults, not personal targets calculated for an individual, and the teaspoon and gram versions describe the same amount: about 4 grams of sugar is roughly 1 teaspoon.

The World Health Organization expresses its limit as a share of total energy rather than a fixed gram amount, and it targets what it calls free sugars. Free sugars are a slightly broader category than added sugars: WHO defines them as the sugars added by a manufacturer, cook, or consumer plus the sugars naturally present in honey, syrups, fruit juices, and fruit juice concentrates. WHO's 2015 guideline makes two distinct recommendations, and the difference in their strength matters. Keeping free sugars below 10 percent of total energy intake is a strong recommendation, which in WHO's system means it can be adopted as policy in most situations. A further reduction to below 5 percent of total energy, roughly 25 grams or 6 teaspoons a day, is only a conditional recommendation: WHO notes the supporting evidence is more limited, so the 5 percent figure is presented as a target that would provide additional benefit rather than a firm rule.

The Dietary Guidelines for Americans set the third widely cited limit, and the current 2025-2030 edition, published in January 2026, took a firmer line than the 2020-2025 edition it replaced. It states that no amount of added sugars or non-nutritive sweeteners is recommended or considered part of a healthy diet, advises that no single meal contain more than about 10 grams of added sugars, and recommends no added sugars for children through age 10. The prior 2020-2025 edition framed the limit as less than 10 percent of total calories for everyone aged 2 and older, which on a 2,000-calorie diet works out to under 50 grams a day; that 50-gram figure is still the basis for the added-sugars Daily Value on the current Nutrition Facts label, even though the dietary guidance itself has since moved to the per-meal framing.

Where added sugar actually hides

Most added sugar does not come from the sugar bowl. Both the CDC and the Harvard T.H. Chan School of Public Health identify the leading sources of added sugars in the United States diet as sugar-sweetened beverages, desserts, and sweet snacks such as ice cream, pastries, and cookies. Sugar-sweetened beverages stand out as the single largest contributor: a 2022 review in Nature Reviews Endocrinology by Malik and Hu describes them as a major source of added sugars in the diet. A single can of regular soda alone can carry a large share of a day's recommended limit; WHO notes that one can of sugar-sweetened soda can contain up to about 40 grams, roughly 10 teaspoons, of free sugars.

Added sugar also turns up in places people do not expect, including breakfast cereals, flavored yogurts, sauces, and many packaged and ultra-processed foods, where it is added during manufacturing. The broader question of how heavily processed foods relate to health is covered in the separate guide on ultra-processed foods, which explains what that category means and what the evidence does and does not show. The practical point here is that beverages and packaged foods, rather than the spoonful added to coffee, account for the bulk of most people's added-sugar intake.

Why excess added sugar matters

The case for limiting added sugar rests on a measured reading of the evidence rather than on catastrophizing. The strongest signal comes from sugar-sweetened beverages, because they are the largest single source and have been studied most directly. The 2022 Nature Reviews Endocrinology review by Malik and Hu reports that a robust body of evidence has linked habitual intake of sugar-sweetened beverages with weight gain and a higher risk, compared with infrequent consumption, of type 2 diabetes and cardiovascular disease. The authors conclude that strong evidence from cohort studies and clinical trials supports what they call an aetiological role of these beverages in relation to weight gain and cardiometabolic disease. That is careful language: it points to a genuine causal contribution for beverages specifically, while stopping well short of claiming that sugar single-handedly causes any one disease.

Dental health is the other clearly established concern. WHO states that keeping free sugars below 10 percent of total energy reduces the risk of overweight, obesity, and tooth decay, and that dental caries become more common when free-sugar intake rises above 10 percent of energy. The honest summary is that excess added sugar, and sugary drinks above all, is associated with weight gain and worse cardiometabolic and dental outcomes, which is why the limits exist. It does not follow that sugar is uniquely toxic or that an occasional dessert is harmful; the concern is the habitual, often invisible load that pushes daily intake well past the recommended limits.

Reading the Added Sugars line on a label

The updated Nutrition Facts label makes added sugar far easier to find than it used to be. As the Harvard T.H. Chan School of Public Health explains, the label now lists a separate Added Sugars line indented beneath Total Sugars, so the added portion is no longer hidden inside the total. This matters because a food like plain milk or unsweetened yogurt can list 12 grams or more of sugar that is entirely natural lactose, with zero added sugar, while a sweetened drink with the same total may be almost all added.

Two numbers make the label practical to read. First, the conversion: about 4 grams of sugar equals roughly 1 teaspoon, so a product listing 24 grams of added sugar contains about 6 teaspoons. Second, the percent Daily Value beside the Added Sugars line is based on an FDA Daily Value of 50 grams of added sugar a day for a 2,000-calorie diet, so a serving at 20 percent of the Daily Value contributes about a fifth of that ceiling. That 50-gram Daily Value comes from the FDA's labeling regulation and reflects the earlier 10-percent-of-calories benchmark; the FDA has not yet revised it to match the 2025-2030 dietary guidance. For readers who want to see how specific whole foods compare, the food database on this site lists per-100-gram and per-portion nutrition for a wide range of single-ingredient foods, which is a useful contrast to the added sugar found in processed products.

Frequently asked questions

How much added sugar can I have a day?

The American Heart Association suggests a daily limit of no more than about 36 grams (9 teaspoons) of added sugar for men and about 25 grams (6 teaspoons) for women. The World Health Organization frames it as keeping free sugars under 10 percent of total energy. The current Dietary Guidelines for Americans (2025-2030) advise that no amount of added sugars is recommended and that no single meal exceed about 10 grams. These are general population reference figures, not personal prescriptions.

What is the difference between added sugar and natural sugar?

Natural sugar occurs inside whole foods, such as the fructose in fruit or the lactose in plain milk, alongside fiber, water, vitamins, and minerals. Added sugar is added to foods and drinks during processing or preparation, or at the table. The CDC distinguishes added sugars from the naturally occurring sugars in milk, vegetables, and fruits, and it is the added sugar that the daily limits target.

Is the sugar in fruit bad for me?

The natural sugar in whole fruit is not the target of the added-sugar limits. It comes packaged with fiber, water, and nutrients, which is why whole fruit behaves differently from a sugary drink. The guidelines are concerned with added sugar, not the intrinsic sugar in whole foods, so whole fruit is generally treated as part of a healthy diet rather than something to count against the limit.

Which foods have the most added sugar?

Sugar-sweetened beverages such as soda are the single leading source of added sugar in the typical American diet, according to the CDC and the Harvard T.H. Chan School of Public Health, followed by desserts and sweet snacks like cookies, cakes, and ice cream. WHO notes that one can of regular soda can contain up to about 40 grams (roughly 10 teaspoons) of free sugars on its own.

How do I read added sugar on a food label?

The updated Nutrition Facts label lists a separate Added Sugars line indented beneath Total Sugars, with a percent Daily Value based on an FDA Daily Value of 50 grams of added sugar a day for a 2,000-calorie diet. About 4 grams of sugar equals roughly 1 teaspoon, so a product listing 24 grams of added sugar contains about 6 teaspoons.

Does sugar cause diabetes or heart disease?

The evidence is best described as a strong link rather than a simple cause. A 2022 review by Malik and Hu found that habitual intake of sugar-sweetened beverages is linked with weight gain and a higher risk of type 2 diabetes and cardiovascular disease, and the authors describe an aetiological role for these beverages in cardiometabolic disease. That points to a real contribution, especially from sugary drinks, without meaning that sugar alone is the single cause of any one condition.

References

1. 1How Much Sugar Is Too Much? · American Heart Association. Accessed 2026-06-07.
2. 2Guideline: Sugars intake for adults and children (2015), and accompanying news release · World Health Organization. Accessed 2026-06-07.
3. 3Dietary Guidelines for Americans, 2025-2030 (10th Edition, January 2026) · U.S. Department of Agriculture and U.S. Department of Health and Human Services. Accessed 2026-06-08.
4. 4Added Sugar in the Diet (The Nutrition Source) · Harvard T.H. Chan School of Public Health. Accessed 2026-06-07.
5. 5Added Sugars on the Nutrition Facts Label · U.S. Food and Drug Administration. Accessed 2026-06-08.
6. 6The role of sugar-sweetened beverages in the global epidemics of obesity and chronic diseases (Malik VS, Hu FB), Nat Rev Endocrinol 2022;18(4):205-218 (PubMed 35064240) · Nature Reviews Endocrinology (via PubMed, National Library of Medicine). Accessed 2026-06-07.
7. 7Get the Facts: Added Sugars · U.S. Centers for Disease Control and Prevention. Accessed 2026-06-07.