Breastfeeding: the benefits for baby and mum

You've almost certainly heard the same old warnings before you even had your baby in your arms: sore breasts, broken sleep, cracked nipples, engorgement. Enough to put you off before you've even tried. And yet, over the past twenty years or so, the evidence has piled up in the other direction. Breastfeeding is neither a feat to achieve nor an obligation to endure: it's a choice, with real benefits, its limits, and plenty of nuance in between.

What the guidance says

The World Health Organization recommends exclusive breastfeeding for the first 6 months, then continuing alongside introducing solid foods, for up to 2 years or beyond, for as long as mother and baby want. This is the reference point for NHS guidance and early years professionals. In other words, breastfeeding for a long time isn't eccentric: it's what official guidance allows for.

This is the official framework. In real life, it plays out very differently from one family to another — exclusive breastfeeding for a few months, mixed feeding when you return to work, continuing morning and evening for cuddles. None of these is "the right one": they depend on your body, your baby, your routine, and what you want to experience.

A milk that reinvents itself every day

Nothing is fixed here. In the first days, you produce colostrum: low in volume but very rich in antibodies. Then comes transitional milk, before mature milk, whose composition keeps changing week after week, in step with your baby's growth.

It contains proteins, fats, sugars, minerals, and long-chain fatty acids, including DHA, which is involved in brain and retinal development. An important detail: their levels depend a lot on what you eat. Infant formula also contains them, in amounts regulated by UK law, and today's formulas meet babies' nutritional needs — though none exactly reproduces what a living body does.

For baby: immunity is passed on

Breast milk contains secretory immunoglobulin A, white blood cells and oligosaccharides. Current evidence suggests a link with fewer digestive infections, ear infections and respiratory infections during the breastfeeding period. In the longer term, however — obesity, diabetes, allergies — the results are more mixed and hard to separate from other factors, such as overall diet or environment. So caution is still needed, in both directions.

That said, it's understandable if it feels frustrating to read that "studies don't settle it". In practice, remember that the immediate benefits — fewer infections in the early months, a close bond built at every feed — are already very real, and the rest doesn't depend on breastfeeding alone. Diet, environment, sleep, the love you give: it all counts.

For mum: real effects, often quiet

Feeding triggers the release of oxytocin. This hormone contracts the uterus after birth, which helps limit bleeding and speeds its return to its usual size. It also helps you feel calm, as does prolactin — hence that pleasant drowsiness that sometimes follows a feed, often when you least expect it.

Over the longer term, breastfeeding is associated with a lower risk of breast and ovarian cancer, particularly when it is continued. When it comes to weight, the effect exists but remains modest and varies a lot from one woman to another: it is no substitute for a balanced diet or regular physical activity. In other words, there's no magic formula, and no reason to blame yourself if the kilos stay longer than expected.

What we still don't know

Not all women can breastfeed, and some don't want to. A well-informed choice is not a failure, and there's no medal at the end. The pain of the first few weeks often comes from a position that needs adjusting or a shallow latch: it's a technical problem, not fate. If you have cracked nipples, engorgement or simply doubts, speak to your midwife, health visitor, children's centre or an IBCLC-certified lactation consultant.

In practice: what helps

• Offer the breast early after birth, skin to skin, and on demand, without watching the clock.
• Check the latch: mouth wide open, lips flanged, chin pressed against the breast, no sucking noises.
• Drink to your thirst, eat regularly, sleep when baby sleeps. These three points matter more than any supplement sold on the shelf.
• Keep useful contacts close at hand: midwife, health visitor, local breastfeeding support group.

Budget

Breastfeeding itself costs nothing. It's the accessories that make the difference, with big variations depending on your plans and where you live.

• Double electric breast pump: expect around £70-£180 to buy, or about £25-£55 a month to hire from a pharmacy. NHS availability varies by area; sometimes pumps can be loaned, and your midwife, health visitor or GP can advise what's available locally. This is the first question to ask.
• Nursing bra: £13-£35 each, on the high street, in baby shops or online. Two or three are enough, and organic cotton avoids synthetic fabrics against often-sensitive skin.
• Breast pads: disposable around £4-£9 a box; washable organic cotton £9-£22, reusable for months and much better for waste.
• Lanolin cream: £7-£13 from a pharmacy. One tube is plenty for the first few days.
• IBCLC consultation: often £50-£90, rarely covered by the NHS, though some private health insurance may contribute; NHS infant feeding clinics and support groups are free.

Prices vary by brand, retailer and current promotions. Compare pharmacy and online shop before investing: hiring a breast pump is often smarter than buying one, especially if you don't yet know how long you'll breastfeed.

Sources

• World Health Organization (WHO), recommendations on breastfeeding infants.
• NHS, breastfeeding and early years nutrition guidance.
• NHS, breastfeeding support and breast pump advice.
• Cochrane Library, systematic review "Optimal duration of exclusive breastfeeding".
• Cancer Research UK, information on breast cancer risk factors.

Food supplements do not replace a varied, balanced diet and a healthy lifestyle.