Couples who eat more fatty fish (such as salmon and sardines) tend to make love more often and to keep women pregnant sooner, according to a new study by Harvard University published in the journal Journal of Clinical Endocrinology & Metabolism .
Couples in which both the woman and the man consumed fish two or more times a week while trying to conceive, had more frequent sexual intercourse and took less time until the pregnancy was achieved. The researchers admit they do not know why this is happening.
Fish is an important source of protein and other nutrients for women trying to get pregnant. Concerns have been expressed, however, about the amount of mercury they may contain and some women avoid them when they try to become mothers.
Large fish, such as salmon and tuna, do contain higher concentrations of mercury as it is at the top of the food chain, while sardines do not have the same problem and have significant nutritional value due to omega-3 fatty acids.
In the United States, however, the US Food and Drug Administration has announced that 90% of the fish consumed are safe as they contain below the permissible mercury limit. The survey involved 500 couples from Michigan and Texas, who for one year (or until pregnancy) recorded seafood consumption and frequency of sexual contact daily. None of these couples made any treatment for assisted reproduction.
Researchers found that 92% of couples who ate more than twice a week of fish had a pregnancy within one year, compared to 79% of those who consumed less seafood. Researchers say the most common sexual intercourse does not fully explain the faster pregnancy, as there are other biological factors that affect it, such as sperm quality, ovulation or embryo quality, the head of research said.
“The results of the study highlight the importance of not only feeding a woman but also a man when trying to get pregnant and that both companions should include more fish in their diet to get the best results in their fertility” , said Audreay Gaskins of the Harvard School of Public Health.
The researchers said we know oysters are aphrodisiac. But what affects fertility is omega-3 fatty fish. These fatty acids positively affect the quality of sperm of the male, as well as female ovulation and fetal quality.