Natural Sugar vs. Added Sugar: What Your Label Isn't Telling You

If you've ever stood in the snack aisle comparing labels, you've probably noticed two different lines on the Nutrition Facts panel:

Total Sugars.

Added Sugars.

Most people glance at the total number and move on.
But those two lines are telling you two very different things.
 

And the difference between them is one of the most important things to understand when you're trying to eat well without giving up the foods you actually love.

What Is Natural Sugar?
Natural sugar is sugar that exists inside a whole food, exactly as nature made it.

Fruit has it. Vegetables have it. Dairy has it. Dates have it.

that's in that food:

• Fiber, which slows digestion
• Minerals like potassium and magnesium
• Antioxidants and other compounds that benefit the body

Because the sugar is surrounded by fiber, your body breaks it down slowly.

You get a steady release of energy instead of a sharp rush.

What That Means: Natural sugar and the fiber around it are a package deal. When you eat the whole food, your body handles the sugar differently than it would if the sugar arrived alone.

What Is Added Sugar?

Added sugar is sugar that's been taken out of its original source and put into something else during processing.

Table sugar is the obvious example. But so are:

• Cane juice
• Brown rice syrup
• Maltodextrin
• Agave nectar
• Fruit juice concentrate

That last one surprises most people.

Fruit juice concentrate sounds natural and it is, technically, derived from fruit. But when you press fruit down to a concentrate and add it to another food, the fiber is gone. What remains is essentially a fast-absorbing sugar. That's why the FDA classifies it as an added sugar.

The same logic applies to honey and maple syrup when used as ingredients in processed food. Eaten on their own, they come with some trace nutrients. Mixed into a packaged product, the fiber buffer is still absent, and the body treats them similarly to refined sugar.

Why Your Body Responds Differently
Both natural sugar and added sugar eventually break down into glucose (the fuel your cells use for energy). But the path they take to get there matters.

When sugar comes with fiber, digestion slows down.
Glucose enters the bloodstream at a measured pace.
Energy stays stable.

When sugar arrives without fiber, absorption is fast.
Blood glucose rises quickly.
Insulin responds to bring it back down.
And if that response overshoots, you end up lower than where you started, which is where the crash, the brain fog, and the next craving come from.

Most nutrition researchers, including those at Harvard Health, note that natural sugars in whole foods are not linked to the same health outcomes as consistent overconsumption of added sugars. (Harvard Health, 2019)

What That Means: The total sugar number doesn't tell you how your body will respond. The fiber, or the absence of it, is what changes that equation.

(The longer-term effects of consistently high added sugar intake, including impacts on insulin, heart health, and liver function, are covered in the next blog. This one is focused on understanding the difference.)

How to Read the Label

The FDA updated the Nutrition Facts label to make this easier.
You'll now see two separate lines:

• Total Sugars: all sugars combined, natural and added.
• Added Sugars:  only the sugars that were added during processing.

If a product shows 7g Total Sugars and 0g Added Sugars, all of that sugar is coming from the food itself, not from anything added in.

If it shows 7g Total Sugars and 7g Added Sugars, all of the sugar was put there on purpose.

The ingredient list tells you even more.
Added sugars appear under more than 60 different names. If you see any of the following near the top of the list, you're looking at a significant source of added sugar: (FDA Nutrition Facts Label, 2024)

• Cane sugar / cane juice / evaporated cane juice
  
• High-fructose corn syrup
  
• Maltodextrin
  
• Brown rice syrup
  
• Fruit juice concentrate (apple, grape, or otherwise)
  
• Agave nectar
  
• Dextrose, sucrose, fructose

What That Means: The label is giving you the information. You just need to know which lines to look at, and what the ingredient names actually mean.

What to Actually Look For
Focusing only on the total sugar number misses the point.

A more useful set of questions:

• Where is the sugar coming from? (Whole food or extracted sweetener?)
  
• Does the ingredient list show 0g Added Sugars?
  
• Is the sweetener recognizable as a whole food?
  
• Are there other whole-food ingredients alongside it, or just the sweet?

A product with 7g of sugar from whole Medjool dates (which contain fiber, potassium, and magnesium) is a very different thing than a product with 7g from cane sugar.
The label shows the same number. The body doesn't experience the same thing.

The Bottom Line
Natural sugar isn't the enemy.
Added sugar, in excess, is the one most researchers flag for concern.

The distinction is right there on the label. Now you know exactly where to look.

 

Sources

• Harvard Health — The Sweet Danger of Sugar: https://www.health.harvard.edu/diabetes-and-metabolic-health/the-sweet-danger-of-sugar
• UCSD CHEAR — Natural vs. Added Sugars: https://chear.ucsd.edu/blog/understanding-natural-versus-added-sugars
• UAB — How Much Sugar Is Too Much?: https://www.uab.edu/news/news-you-can-use/how-much-sugar-is-too-much-uab-neuroscientists-weigh-in
• WebMD — How Sugar Affects Your Body: https://www.webmd.com/diabetes/features/how-sugar-affects-your-body
• Nuvance Health — Natural vs. Added Sugar: https://www.nuvancehealth.org/health-tips-and-news/difference-between-natural-and-added-sugar
• FDA — Added Sugars on the Nutrition Facts Label: https://www.fda.gov/food/nutrition-facts-label/added-sugars-nutrition-facts-label