Estonian women in the 19th century confirm supermother hypothesis

According to the supermother hypothesis, women who give birth to twins are generally stronger and more resilient than average. Estonian researchers have now found evidence supporting this hypothesis. Data on Estonian women from the 19th century confirm that after the age of 80, the mortality rate among mothers of twins was lower than that of other women. Additionally, women living in coastal areas and rural regions tended to have relatively longer lifespans.