Key points from article :
Study looked at diet of 108,000 people over time.
Consumption of sugar-sweetened drinks was associated with a higher risk of death.
Including cola, lemonade and fruit drinks, but not fruit juice.
Those drinking 1 sugary drink a day increased the risk of death by 14%.
Increased the risk of death was 21% in those drinking 2 or more sugary drinks a day.
This group almost a third more likely to die from cardiovascular disease.
Took into account confounders such as age, smoking, and alcohol intake.
Prospective cohort studies can suggest associations, but can't prove causation.
The study was published in journal Circulation.
