Fish good for pregnant moms?
Pregnant women who eat fish a few times a week may be less likely to deliver early.
Whether fish itself helps prevent preterm delivery is not clear, the researchers stress. But, they say, the finding is in line with the general advice that pregnant women eat up to two fish meals per week.

The study included, 852 pregnant women who were at higher than average risk of preterm delivery because they had delivered early before.

Overall, 70% said they had averaged at least a half-serving of fish per week during the first 4 to 5 months of pregnancy. Of those women, 36% went on to have a preterm birth.

In contrast, that rate was 49% among women who ate fish no more than once a month.

In general, the researchers found, women who ate two or three servings of fish per week were about 40% less likely to deliver early than women who ate fish less than monthly.

There was no evidence, however, that a higher fish intake was related to any further cuts in preterm-birth risk.

However, fish is generally considered a healthy choice, being a source of omega-3 fatty acids. But, fish are often contaminated with traces of mercury, which could harm the developing fetal nervous system.

So the advice is for pregnant women to choose fish low in mercury, like canned light tuna, salmon and shrimp and limit themselves to a couple servings per week. They should completely avoid certain fish high in mercury: namely, shark, swordfish, king mackerel and tilefish.

Are you pregnant? How often do you eat fish?

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