‘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 ...

If you’ve found yourself scrolling through the breastfeeding world online, you know that people have a lot of strong opinions about breast milk. But what exactly do we know about the biology of it?

It’s natural to wonder about your newborn’s taste experiences. Since the first flavors that most children experience come from breast milk, many parents find themselves wondering, “What does breast ...

Breast milk contains living bacteria that transfer to babies' guts, helping build healthy digestion and immune systems.