Sugar vs Added Sugar: Reading the Label

The line answers a manufacturing question, not a health one#

On a US nutrition label, Total Sugars counts every gram of sugar in the food, wherever it came from — the lactose in milk, the fructose in a strawberry, the sucrose a factory stirred in. Added Sugars, indented underneath, counts only the sugar that was put there during processing. That is the whole distinction, and it is a useful one, because those two categories arrive in your body attached to very different things.

But the added-sugars line is narrower than most people assume, and narrower than the health guideline it exists to serve. It is defined by what happened to the food in production, not by what the sugar does once you drink it. That gap is not a technicality: it means a glass of 100% orange juice legally declares zero grams of added sugar while the World Health Organization counts every gram of it against your daily limit. Knowing exactly where the definition stops is what turns the line from a reassurance into a tool. The wider accounting of carbohydrate sits in macronutrients explained.

What each definition actually counts#

The US regulation is specific. Added sugars "are either added during the processing of foods, or are packaged as such, and include sugars (free, mono and disaccharides), sugars from syrups and honey, and sugars from concentrated fruit or vegetable juices that are in excess of what would be expected from the same volume of 100 percent fruit or vegetable juice of the same type." The Daily Value is 50 g for adults and children aged 4 and over, on a 2,000-calorie reference diet, and 25 g for children aged 1 to 3. The declaration must read "Includes 'X'g Added Sugars"¹.

Note what that definition is doing. "Natural" is not the test — honey and maple syrup are as unrefined as a sweetener gets, and both are added sugars. Nor is the test the molecule: the sucrose in a cane-sugar packet and the sucrose in a peach are the same compound. The test is provenance.

The WHO uses a different unit entirely. Its guideline governs free sugars, defined as "monosaccharides and disaccharides added to foods and beverages by the manufacturer, cook or consumer, and sugars naturally present in honey, syrups, fruit juices and fruit juice concentrates." It recommends reducing free sugars to less than 10% of total energy intake — a strong recommendation — and suggests a further reduction below 5%, which it labels conditional, meaning the evidence behind it is weaker and it is offered as a stretch target rather than a rule².

US federal dietary guidance lands on the same headline number by its own route: added sugars should be less than 10% of calories per day from age 2, with foods and beverages containing added sugars avoided entirely below age 2⁴. The 50 g Daily Value is that 10% figure converted into grams at 2,000 calories — it is a policy target rendered as arithmetic, not a dose at which harm begins.

Where the definitions come apart#

Run the same foods through both systems and the seams show:

Food	Total Sugars	FDA Added Sugars	WHO Free Sugars
A whole apple	yes	no	no
Plain milk (lactose)	yes	no	no
A glass of 100% orange juice	yes	no	yes
Honey, on anything	yes	yes	yes
Juice concentrate used to sweeten a cereal bar	yes	yes	yes
Sugar you stir into your own coffee	not on any label	not on any label	yes

Two rows carry the article. The juice row exists because the regulation explicitly excludes "fruit or vegetable juice concentrated from 100 percent juices sold to consumers" from the added-sugars declaration. The reasoning is coherent from a labeling standpoint — nobody added anything; the water was removed and put back. It is much harder to defend nutritionally, which is precisely why the WHO wrote its category to include juice by name. Juice has had the fiber and the chewing removed, arrives as a liquid you can put away in ninety seconds, and behaves in the body far more like a soft drink than like the fruit it came from. The label cannot see any of that, because the label is not asking that question.

The added-sugars line records what a factory did, not what a food does. Those usually agree. Where they don't, the label goes quiet.

The last row is the structural limit. WHO's definition covers sugar added "by the manufacturer, cook or consumer" — the spoon in your own kitchen counts. A package label, by construction, can only ever declare what happened before the package was sealed. Anyone tracking added sugar from labels alone is auditing the food industry, not their own diet.

What the distinction gets right is worth stating just as plainly, because a label that flagged all sugar equally would be worse. The sugar in an apple comes bound up with fiber, water and volume that slow it down and fill you up; the sugar in a soft drink comes with none of them. That is a real difference in how the food behaves and how much of it you can put away — the general version of that argument is in good carbs vs bad carbs, and the fiber half of it in fiber benefits and targets.

What the evidence supports, and how firmly#

The strongest-cited human evidence for singling out added sugar is a prospective cohort, and its shape matters as much as its headline.

Using the NHANES III Linked Mortality cohort, researchers followed a nationally representative sample of US adults and related the share of daily calories from added sugar to later cardiovascular death. Across quintiles of intake, the fully adjusted hazard ratios ran 1.00, 1.07, 1.18, 1.38 and 2.03. Comparing people getting 25% or more of their calories from added sugar against those getting under 10%, the adjusted hazard ratio was 2.75 (95% CI, 1.40–5.42; P = .004)³.

That is a graded association across the whole range, which is the pattern you want to see. It is also observational, and three limits should travel with it. Diet was self-reported, and added sugar is among the most systematically under-reported items in nutrition surveys. The extreme comparison — a quarter of all calories from added sugar — describes a small and unusual group whose diets differ from everyone else's in many ways at once, only some of which adjustment can catch. And the confidence interval on that top estimate runs from 1.40 to 5.42, which is a range wide enough that the honest summary is "more than one, magnitude unclear."

So the defensible claim is narrower than the headline it produced: higher added-sugar intake tracks higher cardiovascular mortality, in a dose-related way, in observational data. What no study has done is randomize people to identical diets differing only in whether the sugar was added or intrinsic — which means the added-versus-intrinsic distinction rests on mechanism and food-pattern reasoning rather than on a trial that isolated it. That is a reasonable place for the evidence to sit. It is not the same as settled.

Reading the line in a shop#

A few rules that follow from the definitions rather than from sugar panic.

Read Added Sugars against 50 g, and treat that as a budget. A single item declaring 25 g has spent half a day's Daily Value. The number is a policy conversion rather than a safety threshold, but it is a usable ceiling and the label does the arithmetic for you.

Ignore Total Sugars on single-ingredient foods. Plain yogurt, milk and fruit will always show sugar on that line and it tells you nothing. On those foods the added-sugars line is the only one worth reading — and on a sweetened yogurt it is the only one that distinguishes the product from its plain version.

Add juice back in yourself. This is the one place the label systematically undercounts against health guidance. If you are aiming at the WHO's under-10% target, count juice; if you are reading a US label, it will not be counted for you.

Do not treat "no added sugars" as a health claim. It is a statement about a manufacturing step. Fruit-juice-concentrate sweetened products, jams under the standards of identity, and 100% juices can all clear it while delivering a substantial free-sugar load.

And for the question sitting behind most sugar anxiety — whether a food's sugar spikes you and whether that matters — the number people reach for is the glycemic index, which turns out to be a weaker instrument than its reputation suggests (glycemic index explained). The label's own error bars, incidentally, are wider than the added-sugars debate: how accurate nutrition labels are covers what the printed numbers are allowed to be wrong by.

FAQ#

What is the difference between total sugars and added sugars?#

Total Sugars counts every gram of sugar in the food, including the lactose in milk and the fructose in fruit. Added Sugars, indented beneath it, counts only sugars put in during processing — including syrups, honey, and juice concentrates used as sweeteners beyond what 100% juice would supply¹. Added Sugars is always a subset of Total Sugars, never larger.

Does 100% fruit juice count as added sugar?#

Not on a US label. The regulation explicitly excludes fruit or vegetable juice concentrated from 100% juices sold to consumers, so a carton of orange juice declares 0 g added sugars¹. The WHO disagrees: its free-sugars definition names "fruit juices and fruit juice concentrates" outright². If you are working to a health target rather than a label, count juice.

How much added sugar is too much per day?#

The operative limit in both US and WHO guidance is under 10% of daily calories — which the FDA converts into a Daily Value of 50 g on a 2,000-calorie diet, and 25 g for children aged 1 to 3 (21 CFR 101.9; Snetselaar et al., 2021). The WHO adds a conditional suggestion of under 5%, flagged as lower-certainty. Observational data show cardiovascular mortality rising across the intake range rather than switching on at a threshold³.

Sources#

This article was researched and drafted with AI assistance and reviewed for accuracy by the BurnWeek team. It is general information, not medical advice. How we research and correct our articles →