I am 30 years old. I am planning to get married to a girl who is known to me. We have a very good understanding. But, we have the same blood group that is O-positive. Since the blood group is a factor in having babies, do you think having the same positive blood group could create problems for future generations? My father is very concerned about this. He talked with several doctors and they ensured that it could create problems. And they do not want me to marry this girl. I spoke with another doctor and she replied that it is not a big problem.
I am in great trouble right now, how could I give a clear explanation to my father about this issue? My father told me he knows couples of the same positive blood group who have been married for 10 years without having a baby. And doctors could not find any problems for both men and women. But their blood immune system did not match to have a baby.
I have these questions:
- Does the same blood group create problems? If yes then what basically creates problems?
- Are there any precautions that need to consider for having a baby after getting married to the same blood group?
- Are the diseases like thalassemia occurring because of parent's rhesus factors?
One thing to clarify is that we are two brothers and two sisters and all the six members of my family have the same blood group O positive. My elder sister got a baby after eight years and her husband is B positive. And my younger sister always gets sick since the antibody of her blood cell might not be strong enough to fight disease.
My father explained, due to my parents having the same blood group; my sisters might get those above-explained problems. I will explain my family based on your explanation.
Thank you in advance.