Research shows that breastfeeding is substantially more sustainable than commercial baby formula, producing minimal waste while formula requires significant water, land, and energy resources. According to Gram Research analysis of life cycle assessments, formula production creates higher greenhouse gas emissions, causes water pollution, and contributes to antibiotic resistance—mainly due to dairy farming. Breastfeeding requires no industrial processing or packaging, making it the most environmentally friendly first food for babies.
A new review of scientific research shows that breastfeeding is much better for the environment than commercial baby formula. According to Gram Research analysis, making formula requires a lot of resources like water, land, and energy, while breastfeeding produces almost no waste. The study found that formula production contributes to climate change, water pollution, and even antibiotic resistance. Doctors say that supporting breastfeeding through better parental leave policies and lactation help could improve babies’ health while also protecting our planet. The research suggests that breastfeeding should be part of climate solutions, not just a health choice.
Key Statistics
A 2026 narrative review published in Pediatric Research found that commercial milk formula has significantly higher environmental impacts than breastfeeding across multiple measures including global warming potential, land use, and water eutrophication, primarily due to dairy production requirements.
According to research reviewed by Gram, commercial formula production contributes to antimicrobial resistance and biodiversity loss, while breastfeeding requires no industrial processing, packaging, or transportation and produces minimal waste.
Life cycle assessments show that breastfeeding is the most sustainable first-food system, requiring no resources beyond a mother’s food intake, whereas formula manufacturing is resource-intensive and creates substantial environmental pollution.
The Quick Take
- What they studied: How breastfeeding and commercial baby formula affect the environment and climate, and why some families choose one over the other
- Who participated: This was a review of existing scientific studies and reports, not a study with human participants. Researchers looked at hundreds of published studies about formula production, breastfeeding, and environmental impact
- Key finding: Breastfeeding creates far less pollution and uses far fewer resources than commercial formula. Formula production requires significant water, land, and energy, while breastfeeding requires none of these industrial inputs
- What it means for you: If you’re planning to have a baby or are a new parent, breastfeeding is not only healthier for your baby but also better for the environment. However, not everyone can breastfeed, and that’s okay—the real solution is better support for families who want to breastfeed
The Research Details
This was a narrative review, which means researchers read through many scientific studies and reports about breastfeeding, formula, and the environment, then summarized what they found. They looked at life cycle assessments—detailed studies that track all the resources and pollution created from making a product from start to finish. For formula, this includes raising dairy cows, processing milk, manufacturing the powder, packaging it, and shipping it around the world. For breastfeeding, the only resource needed is the mother’s food intake.
The researchers examined international reports from organizations that study climate change and sustainability. They also looked at studies about why families choose to breastfeed or use formula, including barriers like not having enough time off work, lack of support from healthcare providers, and aggressive marketing of formula products.
This type of review is valuable because it brings together information from many different studies to show the big picture. Instead of looking at one small study, researchers can see patterns across hundreds of studies and understand the full environmental impact of different feeding choices.
Understanding the environmental impact of infant feeding is important because babies are fed for many months, and millions of babies are born every year. Small choices multiplied across millions of families create huge environmental effects. By showing that breastfeeding is a climate solution, not just a health choice, this research helps doctors and policymakers understand that supporting breastfeeding is supporting the planet. It also helps explain why policies like paid parental leave and workplace lactation support are environmental issues, not just family issues.
This review was published in Pediatric Research, a respected medical journal. The researchers looked at peer-reviewed scientific studies, meaning the research had been checked by other experts. However, because this is a review of other studies rather than a new experiment, the strength of the findings depends on the quality of the studies reviewed. The researchers were transparent about looking at both health and environmental evidence, which shows balanced analysis. One limitation is that the review doesn’t provide a specific number of studies analyzed, so readers can’t verify exactly how comprehensive the search was.
What the Results Show
Life cycle assessments—detailed studies that track environmental impact from start to finish—show that commercial formula has a much larger environmental footprint than breastfeeding. Formula production creates more greenhouse gases (pollution that causes climate change), uses more water, requires more land, and produces more waste. This is mainly because formula comes from dairy cows, and raising cows requires enormous amounts of feed, water, and land.
The research found that formula manufacturing contributes to multiple environmental problems beyond just climate change. It causes water pollution through a process called eutrophication, where excess nutrients from farms create dead zones in rivers and oceans. Formula production also contributes to antibiotic resistance—a serious health problem where bacteria become immune to medicines—because antibiotics are heavily used in dairy farming. Additionally, the dairy industry drives biodiversity loss, meaning it destroys habitats for wild animals and plants.
In contrast, breastfeeding requires no industrial processing, no packaging, no transportation, and produces virtually no waste. A mother’s body naturally produces milk, so there are no factories, trucks, or plastic containers involved. The only resource needed is the food the mother eats, which she would eat anyway.
The review also identified major barriers preventing families from breastfeeding. These include lack of paid parental leave (parents have to return to work too soon), inadequate support from lactation consultants and doctors, and aggressive marketing of formula products. In many countries, formula companies spend billions advertising their products, while breastfeeding gets little public support or promotion.
The research highlighted that breastfeeding benefits extend beyond individual health to family economics and workplace equity. Families who breastfeed save money on formula costs, which can be substantial over months of feeding. The review also noted that supporting breastfeeding requires systemic changes—not just individual choice. Countries with strong policies supporting breastfeeding (like paid leave and workplace pumping rooms) have higher breastfeeding rates. The research suggests that framing breastfeeding as a climate solution could help governments prioritize policies that support it, similar to how they support other environmental initiatives.
This review updates and integrates previous research on formula’s environmental impact. Earlier studies had documented that formula production uses significant resources, but this research brings together that evidence and connects it explicitly to climate change and sustainability goals. Previous research had also shown health benefits of breastfeeding, but this review is notable for emphasizing that breastfeeding should be included in climate policy discussions—an angle that has been largely missing from environmental policy. The research aligns with growing scientific consensus that food systems (how we produce food) are major contributors to climate change, and that changing how we feed infants could be part of the solution.
This review has several important limitations. First, it doesn’t include new experimental data—it summarizes existing research, so the findings are only as strong as the studies reviewed. Second, the review acknowledges that not all families can breastfeed due to medical reasons, and some choose not to for personal reasons, and that’s completely valid. The research doesn’t suggest that families who use formula are making a bad choice; rather, it suggests that society should make breastfeeding easier and more supported. Third, the review focuses mainly on developed countries where formula is widely available; the situation is different in developing countries. Finally, while the environmental benefits of breastfeeding are clear, the review doesn’t quantify exactly how much carbon emissions or water could be saved if breastfeeding rates increased globally—that would require additional research.
The Bottom Line
Strong evidence supports breastfeeding as the most sustainable infant feeding option when it’s possible and desired by the family. Healthcare providers should actively support breastfeeding through education and lactation services. Governments should implement policies that make breastfeeding feasible, including paid parental leave, workplace accommodations for pumping, and public education about breastfeeding benefits. Employers should support nursing parents. However, families who cannot or choose not to breastfeed should not feel guilty—the responsibility for sustainability lies with society to support breastfeeding, not with individual families to feel pressured. The evidence confidence is high for the environmental benefits of breastfeeding, but implementation requires systemic change, not just individual choice.
Expectant parents and new parents should know about these findings, especially those interested in environmental sustainability. Healthcare providers, pediatricians, and lactation consultants should understand that supporting breastfeeding is supporting planetary health. Policymakers and employers should recognize that breastfeeding support is an environmental issue, not just a health or family issue. Environmental advocates should include infant feeding in climate solutions. However, families who use formula should not feel judged—the research shows that the environmental problem is the system, not individual choices.
If breastfeeding rates increased globally, environmental benefits would begin immediately—less formula would be manufactured, meaning less resource use and pollution right away. However, the full climate benefits would accumulate over years as millions of tons of formula production are avoided. For individual families, the benefits of breastfeeding (health and environmental) begin as soon as breastfeeding starts. Systemic changes like new parental leave policies would take time to implement but could increase breastfeeding rates within 1-2 years of implementation.
Frequently Asked Questions
Is breastfeeding really better for the environment than formula?
Yes, significantly. Life cycle assessments show formula production creates more greenhouse gases, uses more water and land, and produces more waste than breastfeeding. Formula requires industrial processing, packaging, and transportation, while breastfeeding produces virtually no waste or pollution.
How much does formula production contribute to climate change?
The research doesn’t provide exact percentages, but shows formula has substantially higher greenhouse gas emissions than breastfeeding, mainly from dairy cow farming. Millions of babies worldwide consume formula, so the cumulative environmental impact is significant.
What can I do if I can’t breastfeed but care about the environment?
Don’t feel guilty—the environmental responsibility lies with society, not individual families. Support policies like paid parental leave and workplace lactation support. If you use formula, that’s a valid choice. Focus on other environmental actions and advocate for systems that make breastfeeding easier for those who want it.
What barriers prevent more families from breastfeeding?
Major barriers include insufficient paid parental leave, lack of lactation support from healthcare providers, and aggressive formula marketing. Workplace policies that don’t accommodate pumping also discourage breastfeeding. Systemic changes in these areas could significantly increase breastfeeding rates.
Should governments include breastfeeding in climate policies?
According to the research, yes. Breastfeeding should be recognized as a climate-mitigation strategy alongside other environmental policies. Supporting breastfeeding through paid leave, lactation services, and public education could contribute to both child health and planetary health goals.
Want to Apply This Research?
- Track breastfeeding duration and frequency (e.g., ‘Breastfed for 6 months’ or ‘Currently breastfeeding, 8 times daily’). Users can also track formula use if applicable, creating awareness of feeding choices and their environmental impact over time
- For parents considering breastfeeding: use the app to set a breastfeeding goal (e.g., ‘Breastfeed for 6 months’) and track progress. For parents using formula: use the app to track formula costs and environmental awareness, potentially motivating exploration of combination feeding or increased breastfeeding if desired. For healthcare providers: use the app to remind patients about lactation support resources and breastfeeding benefits
- Create a long-term tracking dashboard showing breastfeeding duration, formula use, and estimated environmental impact (e.g., ‘Your 6 months of breastfeeding saved approximately X gallons of water’). This gamification approach helps users see the real-world environmental benefit of their feeding choices and can motivate continued breastfeeding or increased support for breastfeeding in their communities
This research is a review of scientific literature and does not provide medical advice. Infant feeding decisions should be made in consultation with healthcare providers based on individual health circumstances, family preferences, and medical needs. Not all families can breastfeed due to medical, physical, or personal reasons, and formula is a safe and appropriate alternative when breastfeeding is not possible or desired. This article discusses environmental impacts of feeding choices but does not suggest that families using formula are making an environmentally irresponsible choice—rather, it highlights systemic factors that influence feeding practices. Parents should never feel guilty about their feeding choices. If you have questions about breastfeeding or infant nutrition, consult your pediatrician or a lactation consultant.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.