Soft drinks are big business and the average worldwide consumption being 89.9 litres per person per year proves it. Americans alone drink 47.98 billion litres per year! All that drinking does come with a cost though as drinking just two soft drinks a week increases risk for pancreatic cancer by 87%. Children who consume just one soft drink per day are at an increased risk of becoming obese and one soft drink a day in adults increases risk of metabolic syndrome.