Emergency Contraception and Weight

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.

SOURCE: American Society for Emergency Contraception • AUTHOR: staff • LAST UPDATED: November 19, 2022