Breastfeeding is one of the most physically demanding experiences a body can go through. Nutritional needs exceed even those of pregnancy. And yet it's often the period when mothers take care of themselves the least.
Bone broth is one of the most traditionally used foods by breastfeeding women, across cultures worldwide. But what does it actually do? Does it increase milk supply? Does it improve milk quality? This guide answers those questions — honestly.
The Truth About Bone Broth and Milk Supply
Let's start with what nobody will tell you clearly: there is no clinical study demonstrating a direct link between bone broth consumption and a measurable increase in breast milk production.
Any brand claiming their broth "boosts" your lactation is making a scientifically unsupported promise.
But here's what the science does say: milk production rests on three fundamental pillars — frequent and effective breast stimulation, hydration, and nutritional intake. Bone broth powerfully supports the last two. And that's far from nothing.
What Bone Broth Does for You
Deep hydration — breastfeeding is dehydrating. The body draws on its fluid reserves to produce milk — up to 750ml per day for an exclusively breastfed newborn. Dehydration is one of the most frequent and underestimated causes of a drop in milk supply.
Bone broth, rich in natural electrolytes (sodium, potassium, magnesium), hydrates more effectively than water alone. These minerals facilitate cellular fluid absorption — where plain water simply passes through. A cup of bone broth mid-day or during a feed can make a real difference to your overall hydration level.
Caloric and protein intake — breastfeeding burns an extra 300 to 500 calories per day. Protein needs are at their peak — higher than during pregnancy. Yet many breastfeeding mothers eat insufficiently, either from lack of time or social pressure to "get their body back."
According to the Cleveland Clinic, a cup of bone broth provides between 6 and 12 grams of easily digestible collagen and protein. That's a quick, warm, nourishing caloric and protein intake — with zero cooking effort.
Stress and cortisol reduction — stress is a recognised factor in reduced milk supply. Cortisol, the stress hormone, inhibits oxytocin — the hormone responsible for the milk ejection reflex. Glycine, the dominant amino acid in bone broth, is a precursor to calming neurotransmitters and plays a documented role in cortisol regulation. By supporting nervous system calm, bone broth indirectly creates more favourable conditions for lactation.
Ongoing physical recovery — the breastfeeding period overlaps with postpartum recovery. The body needs two to three times its normal collagen production rate to repair birth-damaged tissues. Bone broth continues to support this healing throughout the entire breastfeeding period.
Gut health — glutamine and gelatin in bone broth support gut wall integrity. A healthy gut absorbs nutrients more efficiently — which directly benefits the quality of milk produced. Some research suggests that a healthy maternal gut microbiome can positively influence the baby's developing microbiome through breast milk.
What Bone Broth Does for Your Milk
Nutritional quality of milk — breast milk is directly influenced by the mother's diet. The amino acids in bone broth — glycine, proline, hydroxyproline — are available to be incorporated into breast milk. According to MomMed, "while collagen doesn't directly increase milk supply, its rich amino acid profile can enhance the nutritional quality of breast milk."
Minerals for baby — breast milk draws on the mother's mineral reserves to form itself. If these reserves are insufficient, it's the mother who suffers — the baby will always be prioritised. Bone broth regularly replenishes calcium, magnesium and phosphorus reserves, protecting the mother's bone density throughout breastfeeding.
Passive immunity — amino acids like glutamine and arginine support the mother's immune system. A strong immune system produces milk richer in protective antibodies for the baby — notably secretory IgA, the newborn's first line of immune defence.
When and How to Drink Bone Broth While Breastfeeding
First thing in the morning — after a night of feeds, the body is dehydrated and mineral reserves are low. A cup of bone broth on an empty stomach replenishes electrolytes and provides protein before breakfast.
During or after a feed — this is when dehydration is most intense. Having a stick ready to dissolve nearby is genuinely game-changing when your hands are occupied with a baby.
In the evening — glycine promotes deeper sleep and better nocturnal thermoregulation. Precious when nights are fragmented.
In cooking — as a base for soup, risotto or mash. Minerals and amino acids transfer fully into the dish. Discover 7 ways to use bone broth daily →
Bone Broth and Breastfeeding: What You Need to Know About Safety
Bone broth is perfectly safe during breastfeeding. Collagen is digested into amino acids before reaching the bloodstream — collagen molecules themselves don't pass into breast milk. It's the broken-down nutrients that are absorbed and used by the body.
One point of vigilance: choose organic bone broth. Bones concentrate heavy metals present in the animals' diet. A certified organic broth significantly reduces this risk.
Frequently Asked Questions
Does bone broth increase milk supply? Not directly — there's no clinical study proving it. However, it supports two of the three pillars of lactation: hydration and nutritional intake. In practice, many mothers report improvement after introducing a daily bone broth ritual.
Does bone broth pass into breast milk? Collagen is digested into amino acids before reaching the bloodstream. It's these amino acids — and not intact collagen — that can enrich breast milk.
Can you drink bone broth if baby has a cow's milk protein allergy? Yes. Bone broth contains no lactose or cow's milk proteins. If your baby has a cow's milk protein allergy, consult your paediatrician — but bone broth is generally not a concern.
How many cups per day while breastfeeding? 1 to 2 cups per day is a good baseline. Learn more about the ideal daily amount →
Should you continue after weaning? Weaning can bring an abrupt hormonal drop. Bone broth, through its support of the nervous system and mineral reserves, can help navigate this transition. And its benefits for skin, joints and immunity remain relevant long after breastfeeding ends. Related: Bone broth for postpartum recovery | Bone broth and menopause
“This information is for educational purposes only and does not replace advice from your doctor, midwife or lactation consultant.”
Frequently asked questions
- Does bone broth increase milk supply?
- Not directly — there's no clinical study proving it. However, it supports two of the three pillars of lactation: hydration and nutritional intake. In practice, many mothers report improvement after introducing a daily bone broth ritual.
- Does bone broth pass into breast milk?
- Collagen is digested into amino acids before reaching the bloodstream. It's these amino acids — not intact collagen — that can enrich breast milk.
- Can you drink bone broth if baby has a cow's milk protein allergy?
- Yes. Bone broth contains no lactose or cow's milk proteins. If your baby has a cow's milk protein allergy, consult your paediatrician — but bone broth is generally not a concern.
- How many cups per day while breastfeeding?
- 1 to 2 cups per day is a good baseline.
- Should you continue after weaning?
- Weaning can bring an abrupt hormonal drop. Bone broth, through its support of the nervous system and mineral reserves, can help navigate this transition. And its benefits for skin, joints and immunity remain relevant long after breastfeeding ends.
