About Careers Internship MedBlogs Contact us
Perinatal Exposure to Folic Acid may Increase Allergy Risk

Perinatal Exposure to Folic Acid may Increase Allergy Risk

Font : A-A+

  • Perinatal exposure to folic acid is associated with altered risks of childhood allergy.
  • It also removes protection from allergy disease in restricted growth in utero (IUGR).
  • Folic acid supplement is necessary during the first trimester to reduce the risk of neural tube defects.

Taking folic acid in late pregnancy may increase the risk of allergies in children.

Folic acid supplementation in later stage of pregnancy
Folic acid, a type of B vitamin, is widely used to prevent neural tube defects in the fetus, and to aid in the development of the central nervous system. The neural tube develops in the first month of pregnancy, and Australian guidelines recommend that women take a daily folic acid supplement at least one month before, and three months after conception.


"Taking a folic acid supplement during the first trimester of pregnancy is important to reduce the risk of neural tube defects," says Dr Kathy Gatford from the University of Adelaide's Robinson Research Institute.

"However, continued supplementation with folic acid into the later stage of pregnancy doesn't reduce that risk, and there's growing evidence that this may increase the risk of allergies in offspring," Dr Gatford says.

Allergies are one of the main causes of non-communicable diseases in the world and are estimated to affect 30-40% of the world's population. Susceptibility to these diseases after birth is partly determined by an individual's early life environment.

Folic acid supplementation removes protection from allergy in womb
Previous research has also shown that a complication of pregnancy known as intrauterine growth restriction (IUGR) - a form of growth restriction in the womb often resulting in lower birth weight - may in fact have a protective effect against childhood allergies.

In studies of sheep born from normal or growth-restricted pregnancies, Dr Gatford and colleagues measured skin reactions to two common allergens: dust mites and egg whites.

"Sheep from growth-restricted pregnancies were less likely to have allergic reactions to egg white protein than those born to normal pregnancies. Importantly, if the sheep with growth restricted pregnancies were fed supplements containing folic acid in late pregnancy, their offspring had similar rates of allergic reactions as control progeny," Dr Gatford says.

These findings suggest that folic acid supplementation partially reduced the protection that has previously been seen in pregnancies with restricted growth.

"Studies in animal models like this allow us to directly investigate these effects of the environment before birth on later allergy. While the results help us to better understand the potential allergy risk in humans, more research is needed before any recommendations about the right timing of supplementation should or could be made in humans," she says.

"We are now in the process of analyzing how a growth-restricted pregnancy and the dietary supplement affect the nutrient status of offspring at birth, and how this might switch on or off genes that regulate the immune system."

References :
  1. NAME OF THE AUTHORS. Late Gestation Maternal Dietary Methyl Donor and Cofactor Supplementation in sheep Partially Reverses Protection against Allergic Sensitization by IUGR, American Journal of Physiology - Regulatory, Int. & Comparative Physiology https:doi.org/10.1152/ajpregu.00549.2016

Source: Eurekalert

Citations   close

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Chrisy Ngilneii. (2017, December 23). Perinatal Exposure to Folic Acid may Increase Allergy Risk. Medindia. Retrieved on Aug 15, 2022 from https://www.medindia.net/news/healthwatch/perinatal-exposure-to-folic-acid-may-increase-allergy-risk-175723-1.htm.

  • MLA

    Chrisy Ngilneii. "Perinatal Exposure to Folic Acid may Increase Allergy Risk". Medindia. Aug 15, 2022. <https://www.medindia.net/news/healthwatch/perinatal-exposure-to-folic-acid-may-increase-allergy-risk-175723-1.htm>.

  • Chicago

    Chrisy Ngilneii. "Perinatal Exposure to Folic Acid may Increase Allergy Risk". Medindia. https://www.medindia.net/news/healthwatch/perinatal-exposure-to-folic-acid-may-increase-allergy-risk-175723-1.htm. (accessed Aug 15, 2022).

  • Harvard

    Chrisy Ngilneii. 2021. Perinatal Exposure to Folic Acid may Increase Allergy Risk. Medindia, viewed Aug 15, 2022, https://www.medindia.net/news/healthwatch/perinatal-exposure-to-folic-acid-may-increase-allergy-risk-175723-1.htm.


News A-Z
What's New on Medindia
Organ Donation Week 2022 - 'Take the Pledge to Save Lives'
Test your Knowledge on Heart Transplantation
Test Your Knowledge on Lung Transplantation
View all
Recommended Reading
News Archive
News Category

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Allergy Dealing with Pollen Allergy Remedies for Seasonal Allergy Relief Choose The Right Over-the-Counter Drugs for Allergy Myelomeningocele Allergy - Symptom Evaluation Cantaloupes - The Healthy Fruit Stay Well This Winter Seasonal Allergy Medications 

Most Popular on Medindia

Hearing Loss Calculator The Essence of Yoga A-Z Drug Brands in India Drug Side Effects Calculator Calculate Ideal Weight for Infants Iron Intake Calculator Turmeric Powder - Health Benefits, Uses & Side Effects Indian Medical Journals Sanatogen Diaphragmatic Hernia
This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use