Abstract
Purpose of Review
Previous literature reviews summarized the associations between individual foods or food groups and lung cancer risk, but the relationship between dietary patterns and lung cancer risk has received less attention. We conducted a systematic review and meta-analyses of observational studies on the associations between dietary patterns and lung cancer risk.
Recent Findings
PubMed, Embase, and Web of Science were systematically searched from inception to February 2023. Random-effects models were used to pool relative risks (RR) on associations with at least two studies. Twelve studies reported on data-driven dietary patterns, and 17 studies reported on a priori dietary patterns. A prudent dietary pattern (high in vegetables, fruit, fish, and white meat) tended to be associated with a lower risk of lung cancer (RR = 0.81, 95% confidence interval [CI] = 0.66–1.01, n = 5). In contrast, Western dietary patterns, characterized by higher intakes of refined grains and red and processed meat, were significantly positively associated with lung cancer (RR = 1.32, 95% CI = 1.08–1.60, n = 6). Healthy dietary scores were consistently associated with a lower risk of lung cancer (Healthy Eating Index [HEI]: RR = 0.87, 95% CI = 0.80–0.95, n = 4; Alternate HEI: RR = 0.88, 95% CI = 0.81–0.95, n = 4; Dietary Approaches to Stop Hypertension: RR = 0.87, 95% CI = 0.77–0.98, n = 4; Mediterranean diet: RR = 0.87, 95% CI = 0.81–0.93, n = 10) while the dietary inflammatory index was associated with a higher risk of lung cancer (RR = 1.14, 95% CI = 1.07–1.22, n = 6).
Summary
Our systematic review indicates dietary patterns characterized by a higher intake of vegetables and fruits, a lower intake of animal products, and anti-inflammation may be associated with a reduced risk of lung cancer.
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Data Availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Abbreviations
- AHEI:
-
Alternate Healthy Eating Index
- CI:
-
Confidence intervals
- DASH:
-
Dietary Approaches to Stop Hypertension
- DII:
-
Dietary Inflammatory Index
- EDIP:
-
Empirical Dietary Inflammation Pattern
- HEI:
-
Healthy Eating Index
- NOS:
-
Newcastle-Ottawa scale
- RR:
-
Relative risk
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We acknowledge authors of the original studies that included in our systematic review and meta-analyses.
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Study conception and design: LZ and SS; study protocol: LZ and SS; literature research and data extraction: LZ and BK; data analyses: LZ and BK; results interpretation: LZ, BK, JZ, and SS; draft: LZ; review and critical revision: LZ, BK, JZ, and SS; read and approved the version of the manuscript being submitted: LZ, BK, JZ, and SS.
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Zhao, L., Kase, B., Zheng, J. et al. Dietary Patterns and Risk of Lung Cancer: A Systematic Review and Meta-Analyses of Observational Studies. Curr Nutr Rep 12, 338–357 (2023). https://doi.org/10.1007/s13668-023-00469-w
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DOI: https://doi.org/10.1007/s13668-023-00469-w