Who says milk is just for babies? New research suggests that a prebiotic sugar found in human breastmilk — 2′-fucosyllactose — might do more than nurture infants. It could help older adults sharpen memory, balance metabolism, and restore a youthful gut microbiome. The molecule, once thought to belong only in the nursery, is proving itself a quiet marvel of human design — a nutrient that never stops giving.

In “Milk for the Mind,” Frank Gray explores how science is rediscovering the ancient intelligence of nurture, from gut–brain chemistry to the poetry of care itself. Forget oat milk; nature’s original recipe is still rewriting the rules of human nourishment.