This book investigates how milk functions as a cultural and biological lens to reveal the complex intersection of dietary norms, ethnocentrism, and global economic policy. Andrea S. Wiley, a professor of anthropology, utilizes a biocultural framework to challenge the assumption that milk is a universally beneficial food source. By examining the interplay between human biology—specifically lactose persistence—and the political economy of dairy, she argues that our dietary habits are shaped more by cultural construction and industrial influence than by objective nutritional necessity.

Experts and educators frequently highlight this text as a foundational resource for undergraduate courses in medical anthropology and food studies. Readers note that the prose is accessible yet academically rigorous, effectively bridging the gap between biological science and cultural critique.