Most conversations about breast milk tend to focus on topics like nutrients, antibodies and bonding time rather than bacteria ...

‘Milk is more unique than a fingerprint,’ says Katie Hinde, an associate professor at Arizona State University who studies lactation.Illustration: The Metropolitan Mueseum of New york People have used ...

Breastfeeding is hard to keep up. Some 83 percent of babies in the United States start out on breast milk, but by 6 months, just 56 percent are breastfed — and at that stage, only a quarter drink ...