G iven the social significance of alcohol worldwide it is not surprising that there is continuing strong interest in the relation between alcohol and hypertension. Recent research continues to address unresolved questions concerning the balance between the medical hazards and the cardiovascular benefits of alcohol, the possible significance of different types of beverage, the role of different drinking patterns for cardiovascular morbidity and mortality, and mechanisms underlying the pressor effects of ethanol. These issues all need to be considered in the context of social aspects of drinking and effects on noncardiovascular morbidity and mortality. Epidemiologic data relating the type or quantity of alcohol consumption to blood pressure or cardiovascular disease needs to be viewed with circumspection from a number of viewpoints. First, heavier drinkers or problems drinkers are far less likely to participate in surveys than others. Second, alcohol consumption past or present is notoriously underreported. Third, drinking patterns are difficult to quantify and often not reported at all. The type, quantity, and pattern of drinking are all highly correlated with socioeconomic and other lifestyle behaviors, 1 many of which may not be measured or not measured accurately enough for adequate adjustments in statistical models. A relation between average weekly alcohol consumption, blood pressure level, and hypertension prevalence has been consistent worldwide and continues to be studied in different populations to evaluate its contribution in relation to other risk factors. However, because of the above issues some caveats should be put on interpretation of data where authors emphatically imply causal relationships from statistical associations.The more recent cross-sectional studies have concentrated on the effects of pattern of drinking and the consumption of alcohol with or without food, beverage type, and the relative effects of alcohol on hypertension subtypes.
Pattern of Drinking, Beverage Type, and Effects on Hypertension SubtypesThe relationship between the pattern of alcohol drinking and the risk of hypertension was addressed in a cross-sectional study of 2609 New Yorkers free from other cardiovascular disease 2 and considered further in an accompanying editorial 3 in which some of the key issues surrounding the topic were discussed. Compared with lifetime abstainers, those who reported drinking on a daily basis or apart from food had a significantly higher risk of hypertension, but this effect disappeared after accounting for the amount of alcohol consumed in the previous 30 days. When current drinkers only were studied and adjustment made for the amount of alcohol consumed in the previous 30 days, the risk of being hypertensive increased (64%) only in those who said they drank without food. Preference for any one type of beverage did not influence the association but the important potential confounder of dietary habits was not assessed. Nevertheless this finding was consistent with an earlier study of Italian...