In what circumstances can a woman not use her own eggs?

In what circumstances can a woman not use her own eggs?

There exist certain circumstances in which a woman cannot have children because her own eggs are not apt for this. This is due to certain genetic anomalies in which the eggs do not have the capacity to conceive healthy children due to a chromosome deficiency.

In other cases, it is not advisable from a medical point of view for the woman to have children because there is a high risk of a hereditary disease from her side of the family being transmitted. This occurs in cases such as haemophilia which affects blood clotting.