Why it is not advisable that a rhesus negative woman to marry a rhesus positive man?

It is not advisable for a rhesus negative woman to marry a rhesus positive man primarily due to the potential risk of Rh incompatibility in pregnancy. If the couple has a child who inherits the father's Rh-positive blood type, the mother's immune system may produce antibodies against the baby's Rh-positive blood cells, leading to hemolytic disease of the newborn. This condition can cause serious health complications for the baby. To manage this risk, medical interventions such as Rh immunoglobulin injections can be used, but it's important for the couple to be aware of these issues before starting a family.