Wine intake and 45-year mortality in middle-aged men with high alcohol consumption: The Italian rural areas of the Seven Countries Study
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Research into the relationship between alcohol consumption and health has a long-standing history. Previous studies have revealed the beneficial effects of moderate alcohol consumption on cardiovascular disease (CVD) and all-cause mortality compared to abstainers and heavy drinkers. To study the long-term impact of wine intake on mortality, we conducted a study involving 1284 men aged 45 – 64 years in 1965, followed over a period of 45 years. We analyzed their wine-drinking habits in relation to all-cause mortality and specific causes using the Cox model. In addition, we utilized a multiple regression model with age at death as the dependent variable adjusted for age, smoking habits, body mass index, physical activity, dietary score, and comorbidity index. At baseline, 97.7% of participants were drinkers, consuming alcohol at an average of 77.4 g/day (mostly from wine). After 45 years, 98.4% of men had passed away. Our findings revealed a J-shaped relationship between alcohol intake and mortality from major CVD and all causes, while the relationship was roughly linear for cancer and liver cirrhosis. The relationship with CVD and all-cause mortality remained J-shaped, even when abstainers were excluded from the analysis, indicating potential health benefits for those consuming an average of 52 g/day (range: 47 – 70 g) and a 34% excess in mortality for those consuming an average of 176 g/day (range: 142 – 570 g). The average age at death for the reference class was 3.5 years higher compared to abstainers and 3.8 years higher compared to the upper class (average: 176 g/day). Reducing alcohol intake during the first 20 years of follow-up was beneficial in terms of life expectancy. In a lifetime follow-up, the relationship between alcohol consumption and mortality formed a J-shaped curve for CVD and all-cause mortality, even when excluding abstainers. Thus, relatively high wine consumption is more beneficial than lower intakes, especially when associated with vigorous physical activity at work – a common practice among rural men in the 1960s.
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