Breast milk has nutrients your baby needs. It helps protect your baby from many illnesses, and it's easily digested. For you, it's convenient and economical. You can feed your baby anytime, anywhere. You may need to buy bottles or nipples if you plan to express milk and bottle-feed your baby now and then. Breastfeeding also helps your uterus return to its normal size faster. And some studies suggest that women who breastfeed may have a lower risk of developing specific types of cancer and hip fractures as they age.