Combined oral contraceptives triple risk of cryptogenic stroke in young women, new study shows

New research presented today at the European Stroke Organization Conference (ESOC 2025) held in Helsinki, May 21–23, revealed that the use of combined oral contraceptives (OCs) is associated with a threefold increase in the risk of cryptogenic ischemic stroke (CIS) in young women. The findings add to a growing body of evidence linking hormonal contraception to vascular risk in women of reproductive age.

Malaria control strategy that efficiently kills parasites in the mosquito could lead to more effective bed nets

A potent combination of antimalarial compounds added to bed nets blocked parasite transmission in mosquitoes while circumventing insecticide resistance, according to a new study led by researchers at Harvard T.H. Chan School of Public Health. The finding dramatically expands understanding of druggable targets in mosquito-stage parasite development and lays the groundwork for a new, more effective way to prevent malaria transmission.