The causes of fetal growth restriction can be divided into four groups :
1. Maternal
2. Fetal
3. Placental
4. Unknown
Maternal -
- Small woman have small babies. These babies are not at increased risk.
- Maternal nutrition before and during pregnancy -: As most of the fetal weight gain occurs behind 24th week of pregnancy. Malnutrition, anemia and oxygen deficiency during significant role in the reduction of the birth weight.
- Toxins -: Alcohol, smoking, cocaine, heroine, drugs.
- Maternal diseases -: Anemia, hypertension, heart disease, chronic renal failure.
