What causes babies to be born with heart defects?

Related questions

1. Can pregnancy damage your heart?
2. Does cardiomyopathy go away?
3. Can you have a heart attack while pregnant?
4. Does pregnancy put a strain on your heart?
5. Is it possible to have a heart attack while pregnant?
6. Can you have a heart attack during labor?
7. What causes heart failure after giving birth?
8. Is a heart murmur serious?
9. Do heart palpitations go away after pregnancy?
10. Does pregnancy increase risk of heart attack?

Tags

1. #birth
2. #problem
3. #reason
4. #defects
5. #defect
6. #congenital
7. #abnormal
8. #single
9. #caused
10. #growth
11. #formation
12. #heart
13. #linked
14. #known
15. #during
16. #cases
17. #there