Seafood-Rich Diet Increases Sexual Activity And Pregnancy Chances, Study Finds

Couples who eat more seafood tend to have sexual intercourse more often and get pregnant faster than other couples trying to conceive, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism.


Seafood is an important source of protein and other nutrients for women who are or may become pregnant, but concerns about mercury have led some women to avoid fish when trying to conceive. According to the Food and Drug Administration and the Environmental Protection Agency, 90 percent of the fish eaten in the United States is low in mercury and safe to eat. Although the agencies recommend two to three servings of lower-mercury fish per week, 50 percent of pregnant women still eat far less than the recommended amount.

"Our study suggests seafood can have many reproductive benefits, including shorter time to pregnancy and more frequent sexual activity," said one of the study's authors, Audrey Gaskins, Sc.D., of Harvard T.H. Chan School of Public Health in Boston, Mass. "Our study found that couples who consume more than two servings of seafood per week while trying to get pregnant, had a significantly higher frequency of sexual intercourse and shorter time to pregnancy."

In the prospective cohort study, researchers from Harvard followed 500 Michigan and Texas couples from the Longitudinal Investigation of Fertility and the Environment (LIFE) Study for one year to determine the relationship between seafood intake and time to pregnancy. Participants recorded their seafood intake and sexual activity in daily journals.

The researchers found that 92 percent of couples who ate seafood more than twice a week were pregnant at the end of one year, compared to 79 percent among couples consuming less seafood. The association between seafood and faster time to pregnancy was not completely explained by more frequent sexual activity, suggesting other biological factors were at play. These could include effects on semen quality, ovulation or embryo quality, Gaskins said.

"Our results stress the importance of not only female, but also male diet on time to pregnancy and suggests that both partners should be incorporating more seafood into their diets for the maximum fertility benefit," she said.
Seafood Intake, Sexual Activity, and Time to Pregnancy

Abstract

Marine long-chain omega-3 fatty acids have been positively related to markers of fecundity in both men and women. However, seafood, their primary food source, can also be a source of toxicants, which may counteract the reproductive benefits.

Objective

To examine the relationship of male and female seafood intake with time to pregnancy (TTP).

Design

Our prospective cohort study included 501 couples planning pregnancy who participated in the Longitudinal Investigation of Fertility and the Environment Study (2005-2009) and were followed for up to1 year or until pregnancy was detected. Seafood intake was collected daily during follow-up in journals.

Setting

Couples residing in Michigan and Texas were recruited using population-based sampling frameworks.

Main Outcome Measures

The primary outcome was time to pregnancy as determined by an in-home pregnancy test. A secondary outcome was sexual intercourse frequency (SIF) as recorded in daily journals.

Results

Couples where the male and female partners consumed ≥8 seafood servings/cycle had 47% (95% CI 7, 103%) and 60% (95% CI 15, 122%) higher fecundity (shorter TTP) compared to couples with male and female partners who consumed ≤1 seafood serving/cycle, respectively. Couples in which both partners consumed ≥8 seafood servings/cycle had 61% (95% CI 17, 122%) higher fecundity compared to couples consuming less. Male and female partners with the highest seafood intake (≥8 servings/cycle) also had 22% higher SIF.

Conclusions

Higher male and female seafood intake was associated with higher frequency of sexual intercourse and fecundity among a large prospective cohort of couples attempting pregnancy.



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