New Meta-Analysis Links Alcohol Consumption to Cardiovascular Disease and Lifespan Reduction

Overview of Alcohol Consumption Guidelines

A recent meta-analysis reveals that consuming alcohol in amounts lower than the recommended weekly guidelines may elevate the risk of cardiovascular disease and shorten lifespans. Different countries have varying recommendations for alcohol intake. In Canada, the guidelines suggest a maximum of two drinks per day (10 per week) for women and three drinks per day (15 per week) for men, with an allowance for an additional drink on special occasions. France advises that women should limit their intake to 14 glasses of alcohol weekly, while men should not exceed 21 glasses.

Details of the Meta-Analysis

An international research team comprising over 120 researchers conducted a comprehensive meta-analysis examining alcohol consumption, cardiovascular health, and life expectancy. The analysis included 83 studies published across 19 countries from 1964 to 2010, involving nearly 600,000 participants with an average age of 57 years. The researchers considered various factors such as age, sex, smoking habits, diabetes, and physical activity levels. Using statistical methods, they assessed the impact of different alcohol consumption levels on the likelihood of developing cardiovascular diseases and overall mortality.

Key Findings from the Study

Among the 599,912 participants, who were followed for an average of 7.5 years, approximately half reported drinking more than 12.5 units (100 g) of alcohol weekly. The data revealed that 40,310 individuals died, and 39,018 were diagnosed with cardiovascular disease. The findings were recently published in The Lancet and indicate several critical outcomes:

– Consuming up to 12.5 units (100 g) of alcohol weekly was linked to the lowest mortality risk.
– Exceeding 37 units per week significantly heightened the risk of death by over 30%.
– Each additional 12.5 units consumed weekly raised the risk of stroke by 14%.
– An increase of 12.5 units per week also raised the risk of heart attacks by 6% and other cardiovascular diseases.

Furthermore, the study noted the following lifespan implications for individuals aged 40 years:

– Drinking between 12.5 and 25 units weekly was correlated with a six-month reduction in lifespan.
– Consumption of 25 to 44 units per week was associated with a one to two-year decrease in lifespan.
– Drinking more than 44 units weekly could lead to a four to five-year reduction in lifespan.

These results were consistent for both men and women, emphasizing that consuming more than eight glasses of wine or beer weekly is associated with an increased risk of cardiovascular disease, stroke, and early death. The findings support the need for reconsidering and potentially lowering alcohol intake recommendations in various countries.

Author and References

This article was written by Debra A. Kellen, PhD.

References:
– Wood, A. M., Kaptoge, S., Butterworth, A. S., Willeit, P., Warnakula, S., Bolton, T., … & Bell, S. (2018). Risk thresholds for alcohol consumption. Lancet. DOI: 10.1016/S0140-6736(18)30134-X
– Drinking Guidelines | Canadian Centre on Substance Use and Addiction [Internet]. Ccdus.ca. 2018 [cited 20 September 2018]. Available from: http://www.ccdus.ca/Eng/topics/alcohol/drinking-guidelines/Pages/default.aspx