The American Heart Association recommends no more than 6 teaspoons (25 grams) of added sugar a day for women and 9 teaspoons (36 grams) for men. But the average American gets way more: 22 teaspoons a day (88 grams). It’s easy to overdo. Just one 12-ounce can of regular soda has 10 teaspoons of sugar — and no nutritional benefit.