Two servings of salmon a week is healthy for pregnant women and their babies: study

March 20, 2012

University of Granada researchers have proven that eating two servings of salmon reared at a fish farm (enriched with omega-3 fatty acids and only slightly contaminated) a week during pregnancy is beneficial both for the mother and child.

This research study –conducted within the framework of a Project funded by the VI EU Framework Program called The Salmon in Pregnancy Study (SiPS)– reveals that the intake of salmon increases omega-3 fatty acid levels both in the mother and child and improves their antioxidant defenses; the cause is the selenium and retinol content of salmon. In addition, salmon does not alter oxidative stress levels, inflammatory response and vascular homeostasis.

To carry out this study, a randomized sample of with low fish intake was selected. The sample was divided into two groups: the control group –which continued with their regular diet– and the Salmon group –which incorporated two servings of "treated" salmon from 20 weeks of gestation until term. The salmon used in this study had been reared in a under a controlled diet including special ingredients (vegetable oils and food as algae and zooplankton); through this diet, salmon became rich in and presented high concentrations of antioxidant vitamins –as Vitamins A and E– and selenium; in addition fish contained very low contaminant levels.

Blood and Urine Samples

Blood and urine samples were taken from the two groups, who were also asked to complete a questionnaire of food habits at weeks 20 and 34 of gestation –which would provide information about food intake during the previous 12 weeks. Subsequently, blood and urine samples were taken again at week 38 of gestation and at labor –where also cord blood samples were taken.

The researchers found that omega-3 fatty acid concentrations improved when pregnant women who did not frequently eat fish ate two servings of salmon weekly; the same results were obtained for the newborns. Two servings of salmon per week help the mother and her child reach the minimum recommended omega-3 fatty acid intake.

Additionally, the researchers found that the biomarkers for lipid oxidation and oxidative damage to DNA were not affected by the intake of salmon. Thus, researchers concluded that eating two servings of salmon a week during pregnancy does not increase oxidative stress. In fact, selenium and retinol concentrations were increased in pregnant women's plasma, and selenium concentrations increased in the newborns. This improvement in antioxidant defenses might help prevent and reduce the additional oxidative stress associated with .

Finally, eating reared at a fish farm did not negatively affect pregnant women's antioxidant defenses, carbohydrate and lipid metabolism, adipokine and cytokine concentrations and biomarkers for vascular homeostasis in the newborns.

Explore further: Women who eat fish have lower colon polyp risk

More information: References:

Miles EA, Noakes P, Kremmyda L-S, Vlachava M, Diaper ND, Rosenlund G, Urwin H, Yaqoob P, Rossary A, Farges M-C, Vasson M-P, Liaset B, Frøyland L, Helmersson J, Basu S, García E, Olza J, Mesa MD, Aguilera CM, Gil A, Calder PC. The salmon in pregnancy study-study design, subject characteristics, maternal fish and marine n-3 fatty acid intake, and marine n-3 fatty acid status in maternal and umbilical cord blood. Am J Clin Nutr 2011; 94(6): 1986S-1992S.

García-Rodríguez CE, Helmersson-Karlqvist J, Mesa MD, Miles EA, Noakes PS, Vlachava M, Kremmyda LS, Diaper ND, Godfrey KM, Calder PC, Gil A, Basu S. Does increased intake of salmon increase markers of oxidative stress in pregnant women? The Salmon in Pregnancy Study. Antioxid Redox Signal 2011; 15(11): 2819-2923.

García-Rodríguez CE, Mesa MD, Olza J, Vlachava M, Kremmyda LS, Diaper ND, Noakes PS, Miles EA, Ramirez-Tortosa MC, Liaset B, Frøyland L, Rossary A, Farges MC, Vasson MP, Aguilera CM, Helmersson-Karlqvist J, Godfrey KM, Calder PC, Basu S, Gil A. Does consumption of two portions of salmon per week enhance the antioxidant defense system in pregnant women? Antioxid Redox Signal 2012, in press.

Related Stories

Women who eat fish have lower colon polyp risk

February 9, 2012
(Medical Xpress) -- Women who eat at least three servings of fish per week have a reduced risk of developing some types of colon polyps according to a new study by Vanderbilt-Ingram Cancer Center investigators.

Young women may reduce heart disease risk eating fish with omega 3 fatty acids

December 5, 2011
Young women may reduce their risk of developing cardiovascular disease simply by eating more fish rich in omega-3 fatty acids, researchers reported in Hypertension: Journal of the American Heart Association.

Recommended for you

To combat teen smoking, health experts recommend R ratings for movies that depict tobacco use

July 21, 2017
Public health experts have an unusual suggestion for reducing teen smoking: Give just about any movie that depicts tobacco use an automatic R rating.

Why sugary drinks and protein-rich meals don't go well together

July 20, 2017
Having a sugar-sweetened drink with a high-protein meal may negatively affect energy balance, alter food preferences and cause the body to store more fat, according to a study published in the open access journal BMC Nutrition.

Aging Americans enjoy longer life, better health when avoiding three risky behaviors

July 20, 2017
We've heard it before from our doctors and other health experts: Keep your weight down, don't smoke and cut back on the alcohol if you want to live longer.

Opioids and obesity, not 'despair deaths,' raising mortality rates for white Americans

July 20, 2017
Drug-related deaths among middle-aged white men increased more than 25-fold between 1980 and 2014, with the bulk of that spike occurring since the mid-1990s when addictive prescription opioids became broadly available, according ...

Parents have critical role in preventing teen drinking

July 20, 2017
Fewer teenagers are drinking alcohol but more needs to be done to curb the drinking habits of Australian school students, based on the findings of the latest study by Adelaide researchers.

Fresh fish oil lowers diabetes risk in rat offspring

July 19, 2017
Fresh fish oil given to overweight pregnant rats prevented their offspring from developing a major diabetes risk factor, Auckland researchers have found.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.