I study the contributions of human lactation to high altitude adaptation and growth of ethnic Tibetan infants. My research specifically looks at the ways in which ethnic Tibetan communities practice and manage pregnancy, birth, lactation, and infancy in a biocultural framework with an emphasis on the ways in which micro-evolution may have shaped milk composition to maximize infant survival. In the United States, I have written extensively on the ways in which problematic centering of white narratives of breastfeeding act as barriers to successful lactation for persons of color and non-binary parents.