Experts say the discovery a 'gamechanger' and will now investigate if taking iron supplements could help prevent defects.
A study's found women who experience low iron levels during pregnancy are much more likely to have a baby with heart disease.
Researchers looked at data from 16-thousand mothers and linked anaemia in early pregnancy to increased chances of congenital heart disease.
Experts say the discovery a 'gamechanger' and will now investigate if taking iron supplements could help prevent defects.

Kildare North TD Joe Neville Appointed As Fine Gael Spokesperson On Infrastructure And Delivery
Secondary School Exam Fees Set To Be Reinstated In 2026
Kildare Cancer Survivor Welcomes ‘Right to be Forgotten’ Breakthrough
€2 Million Transport Fund Announced to Support Learners with Disabilities
Fears Surround Potential Job Losses At Claire's Newbridge Store
Previously Paused Social Housing Project In Athy Gets Go-Ahead
Spike in Helpline Calls After Controversial Parade Float
Warmest Day Of The Year So Far As Temperatures Climb