NEW CORONARY RISK FACTOR. A SODA A DAY

The 12th march online edition of Circulation carries an observational study by the researchers from the Children's Hospital Boston, led by Dr Lawrence de Koning. They looked at the Health Professionals Followup study cohort of male health professionals, and followed them from 1986 to 2008. At 2 yearly intervals, they were asked food and drink questionaire. Boold samples were taken at the half way mark.
There were 42,883 subjects in the cohort. Over the 22 years, there were 3,683 diagnosed CAD ( diagnosed as fatal and non-fatal MIs ). Those ingesting sodas in the highest quintile ( one soda a day )had a 20% more CADs then those in the lowest quintile. This was after adjusting for all the other known risk factors for CAD including lipids and also T2DM. The same was not observed in those who were taking diet sodas.
The authors concluded that as little as one soda a day could significantly increase your risk of CAD. They recommend that drinking water was the best, followed by tea or coffee. drinking fruit juices also had too much sugar and also poses a CAD risk.
Significantly, these findings were also seen in the Nurses Health study, published earlier, also by the Boston boys.
Is this a Boston only phenomena, or it is true, that a soda a day, keeps the cardiologist happy?