Emergency Contraception and Weight

Different types of birth control on a blue table Reproductive Health Supplies Coalition/Unsplash

Does being fat change the effectiveness of emergency contraceptives? The American Society for Emergency Contraceptives dives into the research and lists the benefits and challenges for a range of emergency contraceptive options.

“Although the evidence is not entirely clear, there appears to be a relationship between the efficacy of EC
(particularly LNG) and the weight of the user, and emerging evidence suggests that biological processes
may play a determining role.”