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Whole-grain intake and total, cardiovascular, and cancer mortality: a systematic review and meta-analysis of prospective studies

6/24/2016

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BACKGROUND:The potential role of whole grain in preventing various mortality outcomes has been inconsistently reported in a wealth of prospective observational studies.
OBJECTIVE:We evaluated the relations between whole-grain intake and risks of dying from any cause, cardiovascular disease (CVD), and cancer through a meta-analytic approach.
DESIGN:Relevant studies were identified by searching PubMed and EMBASE databases and bibliographies of retrieved full publications. Summary RRs with 95% CIs were calculated with a random-effects model.
RESULTS:Thirteen studies on total mortality (104,061 deaths), 12 on CVD mortality (26,352 deaths), and 8 on cancer mortality (34,797 deaths) were included. Three studies reported whole-grain intake, and the remaining studies reported whole-grain product intake. In the dose-response analysis in which the intake of whole-grain products was converted to the amount of whole grain, the summary RRs for an increment in whole-grain intake of 50 g/d were 0.78 (95% CI: 0.67, 0.91) for total mortality, 0.70 (95% CI: 0.61, 0.79) for CVD mortality, and 0.82 (95% CI: 0.69, 0.96) for cancer mortality. A similar reduction was observed for the mortality from ischemic heart disease (RR: 0.68; 95% CI: 0.55, 0.84) but not from stroke (RR: 0.93; 95% CI: 0.54, 1.62). There was evidence of nonlinear associations of whole-grain intake with total (P-nonlinearity < 0.001) and CVD mortality (P-nonlinearity <0.001), but not with cancer mortality (P-nonlinearity = 0.12), with the curves for the associations appearing slightly steeper at lower ranges (<35 g/d) of the intake than at higher ranges.
CONCLUSIONS:Our findings suggest significant inverse relationships between whole-grain intake and mortality due to any cause, CVD, or cancer. The findings support the recommendation of increasing whole-grain intake to improve public health.
Source: http://www.ncbi.nlm.nih.gov/pubmed/27225432

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  • Home
  • About Me
    • Contact Me
  • Schedule a Consultation
  • CBD
    • Vancouver Veteran PTSD Study
    • About CBD
    • CB2 Oil
  • Research
    • News >
      • Anxiety and Depression
      • Arthritis
      • Autism
      • Epilepsy
      • Cancer Protocol
      • Parkinson disease
  • Resources
    • Blog
  • Hero Stories
    • Chronic Pain