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Alcohol consumption and body weight: a systematic review
Carmen Sayon-Orea1, Miguel A Martinez-Gonzalez, Maira Bes-Rastrollo
1Department of Preventive Medicine and Public Health, University of Navarra, Spain.
Nutrition Reviews
|July 28, 2011
Summary
Alcohol consumption
Area of Science:
- Nutrition Science
- Public Health
Background:
- Alcohol contains significant energy (29 kJ/7.1 kcal per gram).
- Understanding alcohol's impact on body weight is crucial for public health.
- Previous research on alcohol and weight gain presents conflicting evidence.
Purpose of the Study:
- To review and analyze the effects of alcohol consumption on body weight.
- To synthesize findings from various study designs regarding alcohol intake and weight gain.
- To identify factors that may influence the relationship between alcohol and weight.
Main Methods:
- Systematic literature search of Medline database (1984-2010).
- Inclusion of cross-sectional studies, prospective cohort studies, and intervention trials.
- Selection of 31 publications based on relevance and methodological quality.
Main Results:
- Findings on alcohol consumption and weight gain risk were contradictory across study types.
- Short-term experimental trials did not reveal a clear trend.
- A positive association between alcohol intake and weight gain was mainly observed in studies with higher drinking levels.
- Light-to-moderate intake, particularly wine, may be protective against weight gain, while spirits are linked to weight gain.
Conclusions:
- The overall evidence does not conclusively link alcohol consumption to weight gain.
- Heavy drinkers may be more susceptible to alcohol-induced weight gain.
- Further research is needed on specific beverage types, consumption patterns, and individual weight gain tendencies.
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