A large-scale study analyzing data from over 340,000 participants has found that wine consumption was associated with a lower risk of death, while beer and spirits were linked to higher mortality rates. The findings, presented at the American College of Cardiology’s Annual Scientific Session, suggest that the type of alcoholic beverage may matter when it comes to health outcomes, beyond just the amount consumed.
The UK Biobank data, collected between 2006 and 2022 with an average follow-up of more than 13 years, categorized participants' alcohol intake as never/occasional, low, moderate, or high. High consumption was defined as more than 40 grams of alcohol per day for men (approximately three standard drinks) and more than 20 grams per day for women (approximately 1.4 standard drinks).
Participants with high alcohol consumption exhibited a 24% higher risk of all-cause death, a 36% higher risk of cancer death, and a 14% higher risk of cardiovascular death compared to those who never or occasionally drank. These findings underscore the general risks associated with heavy drinking.
Differences in Lower Consumption Levels
However, at low or moderate consumption levels, the study observed differing mortality risks based on beverage type. Researchers found that spirits, beer, and cider were associated with significantly higher mortality. In contrast, the same amount of wine intake was linked to significantly lower mortality. Specifically, moderate wine drinkers showed a 21% lower risk of cardiovascular death compared to abstainers or occasional drinkers.
Conversely, individuals who consumed low amounts of spirits, beer, or cider were found to have a 9% higher risk of cardiovascular death.
Potential mechanisms for wine's association with lower mortality include compounds like polyphenols and antioxidants, which may offer beneficial effects on blood vessels, inflammation, and cardiovascular health, according to the study's authors.
Expert Caution and Study Limitations
Addiction specialists emphasize that these findings should be interpreted with caution, particularly for individuals with a history of substance misuse or pre-existing health conditions. Jessica Steinman, an addiction specialist not involved in the research, noted that while the study provides helpful information, generalizing these findings to the entire population could be misleading. She stressed that not everyone should consume alcohol daily, and individuals struggling with addiction should avoid it entirely.
Steinman also highlighted that alcohol metabolization varies significantly among individuals, and the potency of different beverages plays a role in their effects. She recommended consulting with a healthcare professional for personalized guidance on alcohol consumption.
The study's observational design means it cannot establish a causal relationship between wine drinking and lower mortality or definitively prove that other alcoholic beverages directly cause higher mortality. Additionally, the researchers acknowledged that participant-reported alcohol intake was recorded at the study's outset, potentially missing changes in drinking patterns over the follow-up period.
Another limitation cited is the possibility that wine drinkers may share other lifestyle or dietary habits that contribute to their health outcomes. The UK Biobank participants also tend to be healthier than the general population, which could affect the generalizability of the findings.
The study authors called for further high-quality randomized studies to confirm the impact of different drinking habits on mortality risk.