Breastfeeding Through History: What Ancient Wisdom, Scripture, and Modern Science All Agree On
One of the things I love most about studying physiology is realizing that many of the things modern science is only now beginning to explain have quietly existed throughout human history all along. Breastfeeding is one of those things. Long before breast pumps, bottles, formula, and sterilizers existed, mothers all over the world nourished their babies with their own bodies. For nearly all of human history, breastfeeding wasn't considered one parenting choice among many. It was simply the normal beginning of life.
Today, breastfeeding is often discussed as a lifestyle choice or parenting philosophy. Historically, however, it wasn't viewed that way at all. It was simply how human babies were fed. The more we study anthropology, developmental science, physiology, and even Scripture, the more we find ourselves arriving at the same conclusion: breastfeeding isn't a modern movement. It's one of humanity's oldest and most remarkable traditions.
Breastfeeding Across Human History
When anthropologists began studying traditional societies around the world, they found something remarkably consistent. From the Hadza of Tanzania to the San peoples of southern Africa, from Indigenous communities throughout North and South America to cultures across Asia and Europe, breastfeeding was the biological norm. Despite enormous differences in geography, language, and cultural customs, mothers nourished their babies in strikingly similar ways because human milk was simply the food human babies were designed to receive (Konner, 2005; Hrdy, 2009; Dettwyler, 1995).
These observations reveal something else that often surprises modern parents. In many traditional societies, babies remained physically close to their mothers throughout the day, nursing not only in response to hunger but also for thirst, illness, comfort, and emotional connection. Feeding was not viewed as a task separate from caregiving. It was woven into daily life and served as one of the primary ways mothers regulated and cared for their infants. Modern attachment research and developmental neuroscience increasingly support these observations, demonstrating that responsive caregiving during infancy plays an important role in emotional regulation, healthy brain development, and secure attachment.
Breastfeeding Into Toddlerhood Was Once Ordinary
Another finding that consistently emerges from anthropology is that breastfeeding beyond infancy was historically very common. While many people today think of nursing a toddler as unusual, anthropologists have documented that natural weaning often occurred somewhere between two and four years of age, with some cultures nursing even longer depending on environmental conditions, food availability, and cultural practices (Dettwyler, 1995). In other words, what many people now call "extended breastfeeding" would have been considered entirely ordinary throughout much of human history.
This historical perspective also helps explain why organizations like the World Health Organization recommend breastfeeding for two years or beyond. These recommendations are not attempting to revive an outdated tradition or promote a particular parenting philosophy. Rather, they reflect both the anthropological record and the growing body of research demonstrating that breast milk continues to provide nutritional, immunological, and developmental benefits well into the toddler years. Modern public health recommendations and ancient human experience are, in this case, pointing in the same direction.
Scripture Quietly Affirms What Was Already Ordinary
One of the things I appreciate most about Scripture is that it rarely attempts to argue for breastfeeding. Instead, it simply assumes it. That may seem like a small observation, but I think it is actually quite meaningful. Throughout the Bible, breastfeeding appears not as a parenting philosophy or controversial decision, but as one of the ordinary rhythms of motherhood. It was simply part of life.
When Hannah remained home to nurse Samuel before bringing him to the temple, the text offers no explanation because none was needed (1 Samuel 1:22–24). The psalmist reflects on God's care by saying, "You made me trust You at my mother's breasts," using breastfeeding as a picture of complete safety and dependence (Psalm 22:9). Likewise, Isaiah compares God's compassion for His people to that of a nursing mother, asking, "Can a woman forget her nursing child?" (Isaiah 49:15). These passages are not primarily teaching about breastfeeding itself, but they reveal something beautiful nonetheless. Scripture assumes that a mother's breast is one of the earliest places a baby experiences nourishment, comfort, security, and love.
I find that remarkable because it mirrors what developmental psychology and attachment research continue to uncover today. Long before neuroscience could describe co-regulation or infant attachment, Scripture was already using the nursing relationship as one of its most powerful images of trust, provision, and faithful love.
Modern Science Keeps Discovering What Mothers Have Always Known
Perhaps the most fascinating part of this story is that the deeper scientists study breast milk, the more extraordinary it becomes. For much of modern history, breast milk was viewed primarily as nutrition. Researchers understood that it contained fats, proteins, carbohydrates, vitamins, and minerals, but they assumed its primary purpose was simply to provide calories for a growing baby. Over the past few decades, however, that understanding has changed dramatically.
Today, breast milk is recognized as one of the most biologically complex substances ever studied. It contains living immune cells, antibodies, hormones, enzymes, beneficial bacteria, stem cells, and hundreds of unique human milk oligosaccharides that babies themselves cannot digest (Ballard & Morrow, 2013; Hassiotou & Geddes, 2015). Rather than feeding the infant directly, these specialized sugars nourish beneficial bacteria within the baby's developing microbiome, helping shape immune function, protect against infection, and support healthy intestinal development. Scientists continue discovering new components of human milk every year, reminding us how much there still is to learn.
One of the most remarkable characteristics of breast milk is that it is not static. Colostrum, the first milk produced after birth, is highly concentrated with immune factors designed to support the newborn during those earliest days of life. As babies grow, the composition of breast milk changes to meet their changing developmental needs. Research has even demonstrated that breast milk can vary throughout a single feeding and across different stages of lactation, reflecting an extraordinary level of biological adaptability that scientists are still working to fully understand.
More Than Nutrition
Breastfeeding has never been solely about transferring nutrients from mother to baby. While nutrition is certainly essential, researchers increasingly recognize that breastfeeding supports many aspects of infant development simultaneously. Nursing helps regulate a baby's temperature, stabilizes blood sugar, supports immune maturation, nourishes the developing microbiome, encourages healthy jaw and oral development, and provides repeated opportunities for co-regulation between mother and infant (Victora et al., 2016).
This is one of the reasons babies often seek the breast for reasons that extend beyond hunger alone. Nursing frequently provides comfort during illness, reassurance after a frightening experience, regulation during times of overstimulation, and closeness during periods of transition. What can sometimes appear to adults as "comfort nursing" is, in many ways, part of the remarkable design of infancy. Attachment researchers, developmental psychologists, and neuroscientists increasingly recognize that these repeated moments of responsive caregiving help shape a child's developing nervous system while strengthening the secure attachment relationship that supports healthy emotional development later in life (Bowlby, 1969; Porges, 2011).
Ancient Wisdom and Modern Research Point in the Same Direction
One of the themes you'll notice throughout this website is that I love when ancient wisdom and modern science meet. Again and again, we find ourselves rediscovering the remarkable intelligence built into the human body. Breastfeeding is one of those beautiful examples. Anthropology reminds us that mothers have nourished babies this way for thousands of years. Scripture quietly assumes it as one of the ordinary rhythms of family life. Modern physiology continues uncovering new reasons why human milk is uniquely suited for human babies.
None of this is meant to place guilt on mothers whose breastfeeding journeys have looked different than they hoped. Every family has its own story, and many women navigate challenges that are entirely outside of their control. Rather, I hope this growing body of research encourages us to appreciate just how extraordinary God's design truly is. The more we study the human body with curiosity and humility, the more we discover that many of the patterns woven throughout history were never arbitrary. They were beautifully intentional.
Work With Me
If you're preparing for pregnancy, currently expecting, or looking for evidence-based support during the postpartum season, I'd be honored to walk alongside you. My practice is centered on helping women build healthy families through personalized naturopathic care rooted in both science and God's design.
I currently offer Preconception & Pregnancy Preparation, the Pregnancy Support Container, Personalized Birth Planning & Support, the Miscarriage Healing Package, the Natural Motherhood Collective, and the Family Doctor Membership. You can learn more about each offering on the Work With Me page of my website.
If you'd like to connect, simply text (619) 630-8730 with your name, your due date (or desired conception date), and the offering you're interested in. I'd love to schedule a complimentary call to learn more about your goals and see if we're a good fit.
References
Ballard O, Morrow AL. Human milk composition: Nutrients and bioactive factors. Pediatric Clinics of North America. 2013;60(1):49–74.
Bowlby J. Attachment and Loss. Volume 1: Attachment. New York: Basic Books; 1969.
Dettwyler KA. A time to wean: The hominid blueprint for the natural age of weaning in modern human populations. In: Stuart-Macadam P, Dettwyler KA, editors. Breastfeeding: Biocultural Perspectives. Aldine de Gruyter; 1995.
Hassiotou F, Geddes DT. Immune cell-mediated protection of the mammary gland and the infant during breastfeeding. Advances in Nutrition. 2015;6(3):267–275.
Hrdy SB. Mothers and Others: The Evolutionary Origins of Mutual Understanding. Harvard University Press; 2009.
Konner M. Hunter-gatherer infancy and childhood: The !Kung and others. In: Hewlett BS, Lamb ME, editors. Hunter-Gatherer Childhoods. Aldine Transaction; 2005.
Porges SW. The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation. New York: W.W. Norton & Company; 2011.
Victora CG, Bahl R, Barros AJD, et al. Breastfeeding in the 21st century: Epidemiology, mechanisms, and lifelong effect. The Lancet. 2016;387(10017):475–490.
World Health Organization. Infant and Young Child Feeding. Geneva: World Health Organization.
The Holy Bible. 1 Samuel 1:22–24.
The Holy Bible. Psalm 22:9.
The Holy Bible. Isaiah 49:15.
