Which blood group is not suitable for marriage?

Blood type has no effect on your ability to have and maintain a happy, healthy marriage. There are some concerns about blood type compatibility if youre planning to have biological children with your partner, but there are options during pregnancy that can help counteract these risks.

Which blood type lives longest?

Life Span. Chances are higher youll live longer if you have type O blood. Experts think your lowered risk of disease in your heart and blood vessels (cardiovascular disease) may be one reason for this.