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Low-level alcohol consumption and cancer mortality
Hyeonyoung Ko1,2, Yoosoo Chang3,4,5, Han-Na Kim6
1Department of Family Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul, 03181, Republic of Korea.
Scientific Reports
|February 26, 2021
Summary
Even light alcohol consumption is linked to increased cancer mortality risk. This study found a dose-dependent relationship between alcohol intake and cancer deaths, with former drinkers facing the highest risk.
Area of Science:
- Epidemiology
- Public Health
- Oncology
Background:
- The relationship between alcohol consumption and cancer risk is complex and debated.
- Previous studies have yielded conflicting results regarding light-to-moderate alcohol intake.
- Understanding dose-response relationships is crucial for public health guidelines.
Purpose of the Study:
- To investigate the association between low-level alcohol consumption and cancer mortality.
- To clarify the dose-dependent effects of alcohol on cancer risk.
- To analyze cancer mortality risk across different drinking patterns, including former drinkers.
Main Methods:
- A large cohort study of 331,984 Korean adults without prior cancer diagnosis.
- Participants categorized into never, former, and current drinkers (light, moderate, heavy, very heavy).
- Follow-up via national death records to ascertain cancer-related deaths over a median of 5.3 years.
Main Results:
- A positive, dose-dependent association was found between alcohol consumption and cancer mortality.
- Light drinkers showed a 1.58-fold increased risk (HR 1.58, 95% CI 1.03-2.43) compared to never drinkers.
- Former drinkers exhibited the highest cancer mortality risk (HR 3.86, 95% CI 2.38-6.28).
Conclusions:
- Alcohol consumption, even at light levels, is significantly associated with increased cancer mortality.
- The risk escalates in a dose-dependent manner with increasing alcohol intake.
- Former drinkers face a substantially elevated risk, highlighting the long-term impact of alcohol use.
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