How Omega-3 Ensures A Healthy Pregnancy

Pregnant

Expecting mothers have a million worries. Picking out a good name, getting the nursery ready, getting clothing and supplies, and keeping routine doctors appointments are just a few. However, the biggest worry a pregnant woman will encounter is about the health of her child and herself. Adequate medical care, a good diet and prenatal vitamins lower the chances of experiencing many of the common complications that can occur during pregnancy and prenatal development, but the majority of prenatal vitamins and modern diets are missing a vital component: omega-3.

It has been advised that pregnant women maintain a minimum omega-3 intake of 300mg per day. There are a small number of brands that offer prenatal vitamins with omega-3 included in their ingredients list but the dosage amount is usually only the minimum recommended intake, averaging between 200mg and 300mg per dose. Although the minimum is a vast improvement from not getting any omega-3 at all, addition supplementation may be needed to receive the full benefits of the essential fatty acid.

What benefits can omega-3 in pregnancy offer an expecting mother and her child? The list is fairly lengthy because omega-3 and especially the omega 3 fatty acid DHA has positive effects throughout every stage of pregnancy and continues to be extremely important during infancy.

Preventing Miscarriage

There are only a few limited studies on the role omega-3 may play in preventing miscarriages but the results of the studies conducted are favorable. In one study, omega-3 was seen to significantly reduce the risk of miscarriage. This benefit is due to the effect omega-3 has on the cardiovascular system.

Having good blood flow to the uterus is vital during pregnancy. Blood carries the oxygen and nutrients needed for the fetus to grow and for the uterus to function properly. When the blood flow is poor, it can lead to complications because the uterus and fetus may begin to become starved of nutrients. This has the potential to result in a miscarriage. By keeping the blood flow at a healthy level, omega-3 can help reduce the risk of this happening. While the study showed that omega-3 was effective in this aspect, it appeared to work better when in combination with low-dose aspirin.

Preeclampsia

Preeclampsia is a condition that can occur in the last trimester of pregnancy. It is marked by hypertension, loss of proteins, and edema. The condition has a tendency to rapidly worsen right after the first symptoms appear. While it is more common in those who are overweight or have diabetes, this is one of the leading causes for complications during pregnancy and it poses a risk to both mother and child.

Omega-3 has not been shown to cure or treat preeclampsia, but it may have preventative qualities if taken throughout the pregnancy. A study showed that women with lower levels of omega-3 and higher levels of omega-6 were up to seven times more likely to develop preeclampsia throughout the duration of their pregnancy. These results were supported by a second study that also found a link between omega-3 deficiency and preeclampsia. This indicates that taking omega-3 supplements from the start of the pregnancy may prevent the development of the condition and the complications that come with it.

Preventing Preterm Labor

Being born prematurely can have a vast amount of negative effects on a baby because parts of their body do not get the chance to finish developing, especially the lungs and the brain. These effects can sometimes be life-threatening or permanent, even with the best medical care available. So, carrying a baby fully to term is essential for the baby’s health. Within a few studies, omega-3 deficiency was linked to increased risk for delivering prematurely.

In 1992, a study was conducted involving three groups of women who were all in their third trimester of pregnancy. The first group was given olive oil daily, the second was given omega-3 daily, and the third was not given any supplementation at all. The results of the study showed that the women given olive oil had the shortest pregnancies. In contrast, the omega-3 group had the longest pregnancies out of the three groups. No negative side effects of omega-3 supplementation for the mother or child were reported throughout the study.

It has been observed that high levels of omega-6 are linked to shorter pregnancies. This was true in the 1992 study as well. The olive oil group, who had the shortest pregnancy, were found to have significantly higher omega-6 levels by the end of the study. The reasons why omega-6 shortens pregnancy are debated but we know that omega-3 balances out the negative effects of omega-6. Due to only having a few limited studies on the topic, more research is needed but the evidence so far indicates that omega-3 supplementation, especially in the third trimester, may prevent premature delivery and low birth weight.

Building a Healthy Brain

Brain health and omega-3 are deeply intertwined. DHA, an omega-3 fatty acid, is a building block for brain cells. It is the primarily fatty acid found within the brain and without it, the brain doesn’t function as well as it should. When is comes to a developing brain, DHA is even more important. The brain develops rapidly during the third trimester to the point that at birth a new born has between 100 billion and 200 billion brain cells. By the time a child is a year old this number has doubled. To build these neurons, the child needs needs an ample of amount of DHA.

Studies have shown that women who had a high intake of omega-3 during pregnancy and while breastfeeding have children with higher IQ levels. IQ is measured by the brain’s ability to process and use information. It basically shows how well the person’s brain functions. Since DHA is vital to building brain cells, having a good supply of DHA during pregnancy leads to optimal brain function.

While supplementation of omega-3 offers great benefits for a developing brain, a deficiency of omega-3 carries a few worrisome risks. A deficiency of omega-3 during brain development has been linked to both ADHD and schizophrenia. Both of these conditions are marked by lower amounts of grey matter in the brain than normal. The lack of sufficient grey matter could be the result of the brain not having enough DHA to build that part of the brain completely. Omega-3 DHA is essential during fetal and infant brain development, not only for ensuring that the brain develops to its full potential, but also to safeguard against the development of serious neurological disorders later in life. Which is why a high DHA supplement is so vital during pregnancy.

Promoting Good Eyesight

Much like with the brain, DHA is a vital building block for the eyes. It’s a structural component of the retinal photoreceptor membrane, which is vital for good vision. A study on rhesus monkey was conducted in 1986, where the monkeys that were deprived of omega-3 during prenatal development and the first few weeks after birth were shown to have below normal eyesight. This study was supported by the results of a second study published in 1992. This study involved human participants and showed that the effects of an omega-3 deficiency on eyesight within humans was extremely similar to the effects seen with monkeys. Children whose mothers had lower level omega-3 during pregnancy and lactation had poorer eyesight than the children whose mothers had a decent omega-3 intake. This leads to the conclusion that omega-3 is vital to ensuring good eye development and eyesight.

Omega-3 is not produced by the body so it has to be obtained either through a diet heavy in fish or omega-3 supplements. Since the majority of prenatal vitamin do no contain omega-3, taking an omega-3 with high DHA supplement during pregnancy can be extremely beneficial to expecting mothers and their children. Most importantly, it’s entirely safe. Throughout the studies conducted, there was never a report of negative effects for the mother or child and omega-3 is even recommended by medical associations. Omega-3 fish oil is a safe and essential element that is needed for ensuring a smooth pregnancy and a healthy child.

References

Allen, K., & Harris, M. (2001). The Role of n-3 Fatty Acids in Gestation and Parturition. Experimental Biology and Medicine, 266(6), 498-506.

Birch, E., Birch, D., Hoffman, D., & Uauy, R. (1992). Dietary essential fatty acid supply and visual acuity development. Investigative Ophthalmology & Visual Science, 33(11), 3242-3253.

Carlson, S., Colombo, J., Gajewski, B., Gustafson, K., Mundy, D., Yeast, J., . . . Shaddy, D. (2013). DHA supplementation and pregnancy outcomes. American Journal of Clinical Nutrition, 97(4), 808-815. doi:10.3945/ajcn.112.050021

Coletta, J., Bell, S., & Roman, A. (2010). Omega-3 Fatty Acids and Pregnancy. Reviews in Obstetrics & Gynecology, 3(4), 163–171.

Helland, I., Smith, L., Saarem, K., Saugstad, O., & Drevon, C. (2003). Maternal Supplementation With Very-Long-Chain n-3 Fatty Acids During Pregnancy and Lactation Augments Children’s IQ at 4 Years of Age. Pediatrics, 111(1).

Innis, S. (2009). Omega-3 Fatty Acids and Neural Development to 2 Years of Age: Do We Know Enough for Dietary Recommendations? Journal of Pediatric Gastroenterology and Nutrition, 48, S16-S24.

Is DHA supplementation safe during pregnancy? (n.d.). Retrieved November 4, 2015, from http://www.dhaomega3.org/FAQ/Is-DHA-supplementation-safe-during-pregnancy

Lazzarin, N., Vaquero, E., Exacoustos, C., Bertonotti, E., Romanini, M., & Arduini, D. (2009). Low-dose aspirin and omega-3 fatty acids improve uterine artery blood flow velocity in women with recurrent miscarriage due to impaired uterine perfusion. Fertility and Sterility, 92(1), 296-300. http://dx.doi.org/10.1016/j.fertnstert.2008.05.045

Mcnamara, R., & Carlson, S. (2006). Role of omega-3 fatty acids in brain development and function: Potential implications for the pathogenesis and prevention of psychopathology. Prostaglandins, Leukotrienes and Essential Fatty Acids, 75(4-5), 329-349. doi:10.1016/j.plefa.2006.07.010

Neuringer, M., Connor, W., Lin, D., Barstad, L., & Luck, S. (1986). Biochemical and functional effects of prenatal and postnatal omega 3 fatty acid deficiency on retina and brain in rhesus monkeys. Proceedings of the National Academy of Sciences, 83(11), 4021-4025.

Olsen, S., Srensen, J., Secher, N., Hedegaard, M., Henriksen, T., Hansen, H., & Grant, A. (1992). Randomised controlled trial of effect of fish-oil supplementation on pregnancy duration. The Lancet, 1(8800), 1003-1007. doi:10.1016/0140-6736(92)90533-9

Prenatal vitamins: Why they matter, how to choose. (2015, May 13). Retrieved November 4, 2015, from http://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/prenatal-vitamins/art-20046945

Qiu, C., Sanchez, S., Larrabure, G., David, R., Bralley, J., & Williams, M. (2006). Erythrocyte omega-3 and omega-6 polyunsaturated fatty acids and preeclampsia risk in Peruvian women. Archives of Gynecology and Obstetrics, 274(2), 97-103.

Sangiovanni, J., & Chew, E. (2005). The role of omega-3 long-chain polyunsaturated fatty acids in health and disease of the retina. Progress in Retinal and Eye Research, 24(1), 87-138. doi:10.1016/j.preteyeres.2004.06.002

Williams, M., Zingheim, R., King, I., & Zebelman, A. (1995). Omega-3 Fatty Acids In Maternal Erythrocytes And Risk Of Preeclampsia. Epidemiology, 6(3), 232-237.

Cassi O'Brien