The general recommendation for daily sugar intake is to limit "free sugars," which include added sugars and sugars naturally present in honey, syrups, and unsweetened fruit and vegetable juices. For adults, the commonly suggested limits are:

• No more than 30 grams (about 7 sugar cubes or 6 teaspoons) of free sugars per day according to NHS and WHO guidelines, which corresponds to about 5% of total daily energy intake.
• The American Heart Association (AHA) recommends no more than 25 grams (6 teaspoons) per day for women and 36 grams (9 teaspoons) per day for men.
• The Dietary Guidelines for Americans suggest less than 10% of daily calories from added sugars, roughly 50 grams (12 teaspoons) for a 2,000-calorie diet, but many health organizations advocate a lower target closer to the 25-30 grams range.

For children, the recommended maximum intake of free sugars varies with age and is generally lower than adults. Sugars naturally found in fruits, vegetables, and milk do not need to be limited as strictly as free or added sugars. In summary, aiming for around 25 to 30 grams of free sugars daily is a good guideline to follow for adults, with lower amounts recommended for children.