5 doctors weighed in:
How can identical twins be very different sizes?
5 doctors weighed in

Dr. Marilynn Frederiksen
Obstetrics & Gynecology - Maternal Fetal Medicine
4 doctors agree
In brief: Identical twins
Identical twins share a placenta.
It certain circumstances the amount of placental blood flow to one twin may be more than to the other twin. That effects the growth of the twins.

In brief: Identical twins
Identical twins share a placenta.
It certain circumstances the amount of placental blood flow to one twin may be more than to the other twin. That effects the growth of the twins.
Dr. Marilynn Frederiksen
Dr. Marilynn Frederiksen
Thank
Get help from a real doctor now
Dr. Jane Van Dis
Board Certified, Obstetrics & Gynecology
14 years in practice
47M people helped
Continue
108,000 doctors available
Read more answers from doctors