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Fertil Steril. 2011 Nov;96(5):1149-53. doi: 10.1016/j.fertnstert.2011.08.034. Epub 2011 Sep 22.

Dietary patterns and difficulty conceiving: a nested case-control study.

Author information

1
Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Navarra, Spain. etoledo@unav.es

Abstract

OBJECTIVE:

To investigate potential associations between dietary patterns (defined using factor analysis) and difficulty conceiving.

DESIGN:

Case-control study nested in a Spanish cohort of university graduates (Seguimiento Universidad de Navarra [SUN] Project).

SETTING:

Female university graduates all over Spain participating in the SUN Project.

PATIENT(S):

A total of 485 women, aged 20-45 years, reporting having presented with difficulty getting pregnant, and 1,669 age-matched controls who had at least one child.

INTERVENTION(S):

None.

MAIN OUTCOME MEASURE(S):

Reported difficulty getting pregnant. Data were collected from baseline and follow-up questionnaires of the SUN Project.

RESULT(S):

Two dietary patterns were identified. They were labeled as "Mediterranean-type" and "Western-type" patterns. A lower risk of difficulty getting pregnant was apparent in the highest quartile of adherence to the Mediterranean-type pattern compared with the lowest quartile (odds ratio 0.56, 95% confidence interval 0.35-0.95). Greater adherence to the Western-type dietary pattern showed no association with this outcome.

CONCLUSION(S):

A greater adherence to the Mediterranean-type dietary pattern may enhance fertility. Further evidence about the relationship between this dietary pattern and fertility is needed to develop nutritional interventions for women desiring to get pregnant.

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