Most adults should aim for no more than 25 to 36 grams of added sugar per day, depending on sex. That’s 6 to 9 teaspoons. To put that in perspective, a single 12-ounce can of cola contains about 39 grams, which blows past the entire daily limit in one drink.
The exact number depends on which guideline you follow and your individual calorie needs, but every major health authority agrees on one thing: most people are consuming far more sugar than their bodies can handle well.
The Daily Limits by Organization
The American Heart Association sets the most specific targets. Men should cap added sugar at 36 grams (9 teaspoons, or about 150 calories) per day. Women should stay under 25 grams (6 teaspoons, or about 100 calories). These numbers refer strictly to added sugars, not the sugar naturally present in fruit or milk.
The World Health Organization recommends keeping “free sugars” below 10% of your total daily calories, which works out to roughly 50 grams on a 2,000-calorie diet. But the WHO notes that cutting further to 5%, or about 25 grams (6 teaspoons), provides additional health benefits. That stricter target lines up closely with the AHA’s recommendation for women.
The most recent U.S. Dietary Guidelines for Americans (2025-2030) took a notably harder stance than previous editions. The guidelines state that no amount of added sugar is considered part of a nutritious diet. In practice, they recommend that no single meal contain more than 10 grams of added sugar, a meaningful reduction from the previous edition’s ceiling of 50 grams per day.
Added Sugar vs. Natural Sugar
Your body breaks down all sugar the same way, whether it comes from a strawberry or a candy bar. The chemistry is identical. What differs is the package it arrives in. The sugar in whole fruit comes bundled with fiber, water, and micronutrients that slow digestion and limit how much you consume in one sitting. Eating two apples feels like a lot of food. Drinking the equivalent sugar in apple juice takes about 30 seconds and barely registers as a meal.
Added sugars, by contrast, are sugars introduced during processing or preparation. Table sugar is roughly half glucose and half fructose. High-fructose corn syrup, the most common form used in processed foods, is similar at 45% glucose and 55% fructose. Neither provides any nutrient your body actually needs. When health guidelines set daily limits, they’re targeting these added sugars, not the sugar in an orange or a glass of plain milk.
Why Excess Sugar Causes Harm
The damage from too much sugar isn’t just about weight gain. High sugar intake overloads the liver, which is responsible for converting dietary carbohydrates into usable energy. When more sugar arrives than the liver can process, it converts the excess into fat. Over time, this fat accumulates in the liver itself, potentially leading to fatty liver disease, a condition that raises the risk of type 2 diabetes and heart disease.
Sugar also raises blood pressure and promotes chronic inflammation, both of which damage blood vessels and contribute to cardiovascular problems. These effects happen independently of weight. You don’t have to be overweight for excess sugar to harm your heart.
There’s also a less obvious mechanism at play: sugar, particularly in liquid form, interferes with your body’s appetite signals. Sugary drinks leave the stomach faster than solid food, produce weaker fullness signals in the gut, and skip the chewing process entirely. Chewing and swallowing trigger hormonal responses that tell your brain you’ve eaten. When you drink your calories instead, those signals are muted, so you tend to eat the same amount of food on top of whatever you drank. This is one reason sugary beverages are so consistently linked to weight gain in research. The calories simply don’t register as food.
How to Read a Nutrition Label for Sugar
U.S. nutrition labels now include a separate line for “Added Sugars” beneath the total sugar count. This is the number that matters for tracking your daily intake. Total sugars includes the natural sugar in ingredients like milk or dried fruit, while the added sugars line isolates the sweeteners put in during manufacturing.
Sugar on labels is listed in grams, which isn’t intuitive for most people. A simple conversion: divide the grams by four to get teaspoons. A yogurt with 12 grams of added sugar contains 3 teaspoons. A granola bar with 8 grams has 2 teaspoons. Once you start doing this math, the numbers add up fast.
Sugar also hides under dozens of names in ingredient lists. Anything ending in “-ose” (sucrose, maltose, dextrose, fructose) is sugar. So are honey, agave nectar, maple syrup, cane juice, corn syrup, rice syrup, and fruit juice concentrates. These are all metabolically equivalent. Honey and agave may sound healthier, but your liver processes them the same way it processes table sugar.
Where the Sugar Actually Comes From
Most people aren’t dumping 9 teaspoons of sugar into their coffee every morning. The biggest sources of added sugar tend to be less obvious: sweetened beverages (soda, energy drinks, sweet tea, fruit punch), flavored yogurts, breakfast cereals, granola bars, condiments like ketchup and barbecue sauce, bread, and pasta sauce. A single serving of flavored yogurt can contain 15 to 20 grams of added sugar. Two tablespoons of barbecue sauce often pack 10 to 12 grams.
This is why tracking sugar for even a few days can be eye-opening. Many people who avoid obvious sweets still exceed the daily limit through packaged foods they consider healthy or neutral. Checking the added sugars line before buying a product, even briefly, makes it much easier to spot the worst offenders and swap them for lower-sugar alternatives.
Practical Ways to Stay Within the Limit
The single highest-impact change is eliminating or reducing sugary drinks. Because liquid sugar doesn’t trigger fullness the way solid food does, cutting it out tends to reduce total calorie intake without leaving you hungrier. Replacing soda or juice with water, sparkling water, or unsweetened tea removes a significant portion of most people’s daily sugar load in one step.
Beyond beverages, small substitutions make a difference. Plain oatmeal with fresh fruit instead of flavored instant packets. Plain yogurt with berries instead of pre-sweetened varieties. Whole fruit instead of fruit juice. These swaps don’t eliminate sugar from your diet. They replace added sugar with naturally occurring sugar that comes with fiber and nutrients, which is exactly the distinction the guidelines are built around.
If 25 grams feels impossibly low compared to your current intake, don’t aim for perfection on day one. Cutting from 70 grams to 40 grams is still a meaningful improvement. The health benefits of reducing sugar exist on a spectrum, and any reduction from a high baseline moves you in the right direction.