Letters Section Editor: Robert M. Golub, MD, Senior Editor.
To the Editor: Dr Winkelmayer and colleagues1 found that consumption of sugared or diet cola was associated with an increased risk of hypertension. They speculated that certain compounds contained in soda-type beverages may be responsible for this finding. In considering possible mechanisms, they cited a recent study by Schulze et al2 that showed an increased risk of diabetes associated with the intake of cola beverages. However, in that study, diet cola was not associated with an increased risk of diabetes after adjusting for body mass index (calculated as weight in kilograms divided by the square of height in meters).
Kim DH. Caffeine and Incident Hypertension in Women. JAMA. 2006;295(18):2135-2137. doi:10.1001/jama.295.18.2136-b