Source: USDA. 2. World Health Organization (WHO) – The World Health Organization recommends that the daily sugar intake does not make more than 10 percent of your calorie intake per day. This means that the amount of sugar per day you can consume is around 50 grams. These recommendations were passed in 2002, but WHO is seeking to change their own guidelines by dropping its daily sugar intake recommendations from 10 percent of your calorie intake to 5 percent.