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Can Dietary Patterns Impact Fertility Outcomes? A Systematic Review and Meta-Analysis

期刊

NUTRIENTS
卷 15, 期 11, 页码 -

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MDPI
DOI: 10.3390/nu15112589

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diet; fertility; pregnancy; live birth; infertility; Mediterranean diet; diet pattern; whole diet; systematic review

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This study examined the effect of different dietary patterns on fertility outcomes in both naturally conceiving populations and those requiring assisted reproductive technology (ART). The results showed conflicting findings, but suggested that adherence to the Mediterranean diet and various healthy diets could improve pregnancy and live birth rates.
There are conflicting results on the effect of diet on fertility. This study aimed to assess the effect of different dietary patterns on fertility outcomes in populations who conceive spontaneously and those requiring assisted reproductive technology (ART). A systematic search and meta-analysis were performed for studies investigating dietary patterns or whole diets in reproductive aged women requiring ART or conceived naturally. Outcomes were live births, pregnancy rates and infertility rates. In amount of 15,396 studies were screened with 11 eligible studies. Ten different diet patterns were grouped broadly into categories: Mediterranean, Healthy or Unhealthy. For the Mediterranean diet, on excluding high risk-of-bias studies (n = 3), higher adherence was associated with improved live birth/pregnancy rates in ART [OR 1.91 (95% CI 1.14-3.19, I-2 43%)] (n = 2). Adherence to various Healthy diets was associated with improved ART outcomes (ProFertility diet and Dutch Dietary Guidelines) and natural conception outcomes (Fertility diet). However, due to the variability in Healthy diets' components, results were not pooled. Studies demonstrated preliminary evidence for the role of dietary patterns or whole diets in improving pregnancy and live birth rates. However, due to heterogeneity across the literature it is currently unclear which diet patterns are associated with improvements in fertility and ART outcomes.

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