Imagine you're going into surgery.
You're under strict doctor's orders to avoid solids. But you're drinking plenty of clear liquids like juice, Gatorade, and Sprite before the surgery. And you're looking forward to the "protein shake" that the nurses have promised as a meal replacement after the procedure.
Then you realize that you're on track to consume 30 teaspoons of sugar. The World Health Organization recommends no more than 6 teaspoons of sugar, per day, for healthy people.