Soft drink linked to asthma and COPD

The finding comes from a cross-sectional study of 16,000 South Australian residents aged more than 16 years who were surveyed by telephone on their soft drink consumption, which included sports drinks, cola, lemonade and flavoured mineral water.

The prevalence of asthma was 12.5% and COPD was 4.4% and more than one in 10 respondents reported consuming more than half a litre of soft drink daily.

Some 13% of participants with asthma and 15% of those with COPD reported consuming more than half a litre of soft drink per day.

Those consuming half a litre or more per day had a much higher prevalence of asthma and a significant increase of COPD, the researchers found.

There was an additive interaction between smoking and soft drink consumption in relation to asthma/COPD, with those who smoked and drank soft drink at a 6.6-fold greater risk of COPD and a 1.5-fold greater risk of asthma compared to non-smokers who did not consume soft

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