Researchers from the Netherlands studied more than 31,000 people who received blood transfusions and found that men were more likely to have died after three years from pregnant women donors, compared to male donors or women whom have never been pregnant.

See the source article by following the link below:
Researchers from the Netherlands studied more than 31,000 people who received blood transfusions and found that men were more likely to have died after three years from pregnant women donors, compared to male donors or women whom have never been pregnant.