Yes, breastfeeding does reduce postpartum bleeding! When your nipples are being stimulated, it can help with a process called uterine involution.
The stimulation causes your uterus to contract and oxytocin to be released in your brain. Your contractions actually help to stop the heavy postpartum bleeding you may be experiencing.
Breastfeeding can help whether you’re using a breast pump or feeding your baby directly from the nipple. Even if you aren’t breastfeeding, trying a breast pump for the first few weeks postpartum could really help!