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Dietary and circulating lycopene and stroke risk: a meta-analysis of prospective studies.

Abstract

Epidemiological studies support a protective role of lycopene against stroke occurrence or mortality, but the results have been conflicting. We conducted a meta-analysis to assess the relationship between dietary or circulating lycopene and stroke risk (including stroke occurrence or mortality). Relevant papers were collected by screening the PubMed database through October 2013. Only prospective studies providing relative risk estimates with 95% confidence intervals for the association between lycopene and stroke were included. A random-effects model was used to calculate the pooled estimate. Subgroup analysis was conducted to investigate the effects of various factors on the final results. The pooled analysis of seven prospective studies, with 116,127 participants and 1,989 cases, demonstrated that lycopene decreased stroke risk by 19.3% (RR=0.807, 95% CI=0.680-0.957) after adjusting for confounding factors. No heterogeneity was observed (p=0.234, I2=25.5%). Circulating lycopene, not dietary lycopene, was associated with a statistically significant decrease in stroke risk (RR=0.693, 95% CI=0.503-0.954). Lycopene could protect European, or males against stroke risk. Duration of follow-up had no effect on the final results. There was no evidence of publication bias. Lycopene, especially circulating lycopene, is negatively associated with stroke risk.

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  • Authors+Show Affiliations

    ,

    1] School of Public Health, Medical College of Soochow University, Suzhou 215123, Jiangsu, China [2].

    1] Department of Radiotherapy, the First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu, China [2].

    Source

    Scientific reports 4: 2014 May 22 pg 5031

    MeSH

    Anticarcinogenic Agents
    Carotenoids
    Diet
    Female
    Humans
    Lycopene
    Male
    Prospective Studies
    Risk
    Stroke

    Pub Type(s)

    Journal Article
    Meta-Analysis
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    24848940

    Citation

    Li, Xinli, and Jiuhong Xu. "Dietary and Circulating Lycopene and Stroke Risk: a Meta-analysis of Prospective Studies." Scientific Reports, vol. 4, 2014, p. 5031.
    Li X, Xu J. Dietary and circulating lycopene and stroke risk: a meta-analysis of prospective studies. Sci Rep. 2014;4:5031.
    Li, X., & Xu, J. (2014). Dietary and circulating lycopene and stroke risk: a meta-analysis of prospective studies. Scientific Reports, 4, p. 5031. doi:10.1038/srep05031.
    Li X, Xu J. Dietary and Circulating Lycopene and Stroke Risk: a Meta-analysis of Prospective Studies. Sci Rep. 2014 May 22;4:5031. PubMed PMID: 24848940.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Dietary and circulating lycopene and stroke risk: a meta-analysis of prospective studies. AU - Li,Xinli, AU - Xu,Jiuhong, Y1 - 2014/05/22/ PY - 2014/01/30/received PY - 2014/05/02/accepted PY - 2014/5/23/entrez PY - 2014/5/23/pubmed PY - 2015/10/21/medline SP - 5031 EP - 5031 JF - Scientific reports JO - Sci Rep VL - 4 N2 - Epidemiological studies support a protective role of lycopene against stroke occurrence or mortality, but the results have been conflicting. We conducted a meta-analysis to assess the relationship between dietary or circulating lycopene and stroke risk (including stroke occurrence or mortality). Relevant papers were collected by screening the PubMed database through October 2013. Only prospective studies providing relative risk estimates with 95% confidence intervals for the association between lycopene and stroke were included. A random-effects model was used to calculate the pooled estimate. Subgroup analysis was conducted to investigate the effects of various factors on the final results. The pooled analysis of seven prospective studies, with 116,127 participants and 1,989 cases, demonstrated that lycopene decreased stroke risk by 19.3% (RR=0.807, 95% CI=0.680-0.957) after adjusting for confounding factors. No heterogeneity was observed (p=0.234, I2=25.5%). Circulating lycopene, not dietary lycopene, was associated with a statistically significant decrease in stroke risk (RR=0.693, 95% CI=0.503-0.954). Lycopene could protect European, or males against stroke risk. Duration of follow-up had no effect on the final results. There was no evidence of publication bias. Lycopene, especially circulating lycopene, is negatively associated with stroke risk. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/24848940/full_citation L2 - http://dx.doi.org/10.1038/srep05031 DB - PRIME DP - Unbound Medicine ER -