7 Health Benefits of a Sugar-Free Diet. While cutting out added sugars completely is healthy, eliminating all sugars isn’t necessary. Naturally occurring sugars in fruits, milk, and vegetables are part of a balanced diet. Instead, aim to limit added sugars to less than 10% of your daily calories: no more than six teaspoons (100 calories) for women and nine teaspoons (150 calories) for men. The time it takes to adjust to a low-sugar diet varies. If you usually consume a lot of added sugar, it might take longer for your body to adapt compared to someone who consumes less.