Question: how many grams of sugar can you have a day and still lose weight?
Answer: That's 12 teaspoons or 48 grams of sugar if following a 2,000-calorie-per-day diet. The American Heart Association (AHA) has stricter limits and recommends that women consume no more than 6 teaspoons or 24 grams of added sugar per day and men stay under 9 teaspoons or 36 grams of added sugar per day.