This article is part of the Breastfeeding Nutrition & Milk Supply: Evidence-Based Guide for Australian Mothers pillar. It answers one focused question: which specific foods are associated with increased breast milk supply, and how should you structure your breastfeeding diet to support production? For the full picture — including supplements, hydration, and feeding frequency — return to the pillar.

If you're reading this, you're already feeding your baby. That matters more than any list of foods ever will. But the anxiety about supply is real, and the question of what to eat is one of the most common ones asked by breastfeeding mothers — so let's answer it properly.

The honest starting point: no single food guarantees a supply increase. Milk production runs on a supply-and-demand system, and frequent, effective breast emptying is the primary driver. Food supports that system — it doesn't replace it. What you eat affects your energy, your nutrient status, and — through specific galactagogue compounds — potentially your prolactin levels. That's meaningful, even if it isn't magic.

At Nella Vosk, supporting lactation through evidence-aligned nutrition sits at the heart of our Milk & Feeding Support pathway — because a well-nourished mother is better placed to feed consistently, recover well, and sustain supply through the early months.

Galactagogues are foods, herbs, or substances used to support or stimulate milk production. Some have clinical trial support. Others have traditional use across multiple cultures and a plausible biological mechanism. None are miracle workers — but several are genuinely useful when used consistently as part of a nourishing daily diet.

Oats and Barley — the most evidence-backed whole food

Both oats and barley contain beta-glucan, a soluble fibre shown in research to increase prolactin — the hormone that drives milk production. Oats are also a good source of iron, and low iron is one of the more common postpartum nutritional gaps that can indirectly suppress supply and drain energy. Starting the day with oat-based porridge, overnight oats, or oat-rich baked goods is one of the most practical and consistent dietary interventions available.

Beta-glucan is also the reason oats are the base ingredient in most quality lactation cookies. If you're assessing which products actually contain functional quantities of the right ingredients, the guide to what works in lactation cookies for low milk supply covers exactly that.

Fennel — phytoestrogens and prolactin support

Fennel seed contains anethole, a phytoestrogen compound with a long history of use as a galactagogue and reasonable clinical support behind it. Several small studies have shown increased milk volume in mothers using fennel, and it has the added benefit of passing through breast milk to help with infant colic. It can be used as a tea, added to cooking, or taken in supplement form.

The evidence specifically behind fennel for breastfeeding is worth reading if you want the detailed breakdown — it's one of the better-supported plant galactagogues available.

Leafy greens — iron, calcium, and phytoestrogens

Spinach, kale, silverbeet, and broccoli aren't galactagogues in the strict prolactin-stimulating sense, but they support milk quality and maternal health in ways that matter. They're rich in iron, calcium, folate, and phytoestrogens. Two to three servings daily is a practical target — easy to achieve in a smoothie, a stir-fry, or alongside eggs at breakfast.

Nuts, seeds, and healthy fats

Almonds, walnuts, flaxseeds, and sesame seeds are calorie-dense, nutrient-rich, and genuinely practical for breastfeeding mothers who need energy without needing to sit down for a full meal. Almonds are one of the better non-dairy sources of calcium. Flaxseeds and walnuts provide plant-based omega-3s, which influence the fatty acid composition of breast milk — relevant to infant brain development. A small handful of mixed nuts or a tablespoon of flaxseed in porridge requires almost no effort.

Legumes — protein, iron, and fibre in one meal

Chickpeas, lentils, and black beans provide an excellent combination of protein, iron, and complex carbohydrates that supports sustained energy during breastfeeding. Chickpeas in particular have a traditional lactation-support reputation across South Asian and Mediterranean food cultures. Lentil soups, chickpea curries, and hummus-based snacks are practical everyday options that don't require any special preparation.

Garlic — traditional use with a plausible mechanism

Garlic has a long history of traditional use as a lactogenic food, and some observational research suggests that babies may feed longer when mothers have recently eaten garlic — the flavour transfers to milk, and many babies respond positively to it. Whether this translates to higher production or simply more time at the breast (which in turn drives supply) isn't entirely clear, but either outcome is useful.

Green papaya — traditional use in Asian cultures

Green papaya is widely used as a lactation support food across South and Southeast Asian cultures, typically in soups and curries. It contains papain and phytoestrogens, and while robust clinical evidence is limited, its traditional use is extensive and consistent. For mothers from these food traditions, continuing to include green papaya postpartum is reasonable and supported by traditional practice.

Salmon and oily fish — protein and omega-3s

Salmon, sardines, and mackerel provide high-quality protein and significant DHA — an omega-3 fatty acid that passes into breast milk and supports infant neurological development. They're also a practical source of vitamin B12 and vitamin D, both commonly deficient in the postpartum period. Aim for two to three servings per week, choosing lower-mercury options like salmon and sardines over larger fish.

Brewer's yeast appears in a large number of commercial lactation cookies, blends, and supplements because it's rich in B vitamins, iron, protein, and chromium — all genuinely useful for breastfeeding mothers. Many products market it prominently, and many mothers report noticing an effect.

But there's a meaningful caveat that doesn't get enough attention: brewer's yeast is a yeast-based ingredient, and for mothers who are prone to thrush or candida overgrowth — which is more common postpartum due to hormonal changes, antibiotics given during labour, and disrupted gut flora — it can aggravate or trigger a flare. Nipple thrush and oral thrush in babies are genuinely miserable to manage while breastfeeding.

Nella Vosk does not use brewer's yeast in any of its products. Our lactation range is formulated to deliver evidence-based galactagogue and nutritional support without yeast-based ingredients, making it a better option for mothers who are candida-prone, currently treating thrush, or who simply want to avoid the risk. If you've been using brewer's yeast-containing products and have noticed recurring nipple soreness or unusual infant fussiness at the breast, it's worth raising with your GP or midwife.

If you're working to support or increase your supply through diet, start with the foundations: adequate calories, consistent hydration, daily oats, and protein at every meal. Then layer in galactagogue herbs — fennel, fenugreek if it suits you — through teas, cooking, or quality lactation products.

For the complete breastfeeding nutrition picture, including supplement guidance and the full evidence on galactagogues, return to the Breastfeeding Nutrition & Milk Supply Guide. If you want a broader view of all supply-support strategies beyond diet — including pumping, feeding technique, and when to see a lactation consultant — the article on 10 proven ways to increase milk supply covers the complete toolkit. And if you're not sure whether your supply is genuinely low in the first place, the guide on how to tell if you actually have low milk supply is worth reading first.