Mothers of twins are at double the risk of heart disease in the year after giving birth compared to mothers of single infants, according to a recent study. The research analyzed data on 36 million births and found that readmissions for cardiovascular diseases were higher for women with twins. The risk was even greater for mothers of twins who had high blood pressure during pregnancy. The study also found that among women who gave birth to a single child, those with high blood pressure during pregnancy had a higher mortality rate after delivery. The researchers emphasized the importance of monitoring cardiovascular health in mothers of twins, especially in the first year postpartum.