For an average 2000-calorie diet, the World Health Organization recommends that a maximum of 10% of the total calories come from added sugar. This equates to less than 50 grams of added sugar per day. Reducing daily intake of sugar can improve diabetes control. 2  The amount of sugar eaten daily can vary based on activity level and overall health. 3  Be sure your physician is aware of any specific dietary modifications. 4  Women may reduce the daily sugar intake to 17 g per day and men can aim for 25 g per day.