Watch our full video. How identical twins are formed.
   • The Design of Identical and Fraternal...  

The main challenge of twins growing in a small womb space is the potential for inadequate nutrition. Twins in a small womb space may not grow properly.
This can cause growth restriction and other health issues, such as anaemia or jaundice. Twins in a small womb space might also be more likely to experience preterm labour or birth.
Proper monitoring of the babies is essential in order to help reduce any risks associated with twins growing in a small womb space.