Effects of Breastfeeding on IUD Performance

Abstract
The effect that lactation might have on intrauterine device (IUD) performance was investigated by using data from a series of multicenter clinical trials. Life-table methods were applied to compare breastfeeding and non-breastfeeding women with respect to IUD expulsion, accidental pregnancy, IUD removal for various reasons and overall continuation of IUD use. Breastfeeding does not increase the risk of expulson or other events, whether the device is inserted immediately (within 10 min) or more than 42 days after delivery.