Breastfeeding and infant feeding explained

How breastfeeding works

Breastfeeding works on supply and demand: the more your baby feeds, the more milk your body makes. In the first days you produce colostrum, a small amount of rich, protective first milk, before fuller milk comes in. Getting a good latch — where the baby takes a large mouthful of breast, not just the nipple — helps feeding be comfortable and effective. Newborns feed often, including at night, and feeding whenever your baby shows hunger cues (rooting, mouthing, stirring) helps establish supply. Signs a baby is feeding well include regular wet and dirty nappies, contentment after feeds, and steady weight gain after the normal early dip. Skin-to-skin contact, especially early on, supports feeding and bonding. Health benefits include protection against some infections for the baby.

Formula feeding safely

Formula is a safe and nourishing alternative when breastfeeding is not chosen or not possible, and many families use it. First infant formula is suitable from birth and is the only formula most babies need in the first year. Making up feeds safely matters: powdered formula is not sterile, so it should be made up with water that has been boiled and then cooled appropriately, following the instructions carefully, and used freshly rather than stored made-up for long periods. Bottles and teats need thorough cleaning and sterilising, especially in the early months. Hold your baby fairly upright, never leave them to feed alone with a propped bottle, and let them pace the feed. Responsive bottle feeding — following your baby's cues and pace — helps avoid overfeeding.

Combining and expressing

Many families combine breast and bottle feeding, or express breast milk so others can help with feeds. Expressing — by hand or with a pump — lets you collect milk to give by bottle or cup, useful when returning to work or sharing feeds. Expressed breast milk should be stored and handled following safe guidance on how long it keeps in the fridge or freezer. Introducing a bottle alongside breastfeeding is often easier once breastfeeding is well established, though every baby is different. If you want to keep your breast milk supply up, regular breastfeeding or expressing helps. Combination feeding is a personal choice and can work well; a midwife, health visitor or infant feeding specialist can help you find an approach that suits your family.

Common challenges and solutions

Early difficulties are common and usually solvable with support. Sore or cracked nipples often point to the latch, which a midwife or breastfeeding supporter can help correct. Engorgement — overly full, hard breasts — can ease with frequent feeding and comfort measures. A red, painful area with flu-like symptoms may be mastitis, which needs prompt advice from a GP or midwife. Worries about low supply are frequent but often unfounded; feeding on demand and checking nappies and weight help reassure. Cluster feeding, where a baby feeds very frequently for stretches, is normal, especially in the evenings and during growth spurts. Tongue-tie occasionally affects feeding and can be assessed. Reaching out early, rather than struggling alone, usually resolves problems faster.

Getting help and knowing your baby is fed

In the UK there is a lot of support for feeding. Your midwife helps in the early days, and your health visitor supports you as your baby grows, including weighing and tracking growth in the red book (personal child health record). The National Breastfeeding Helpline, local breastfeeding groups and infant feeding specialists offer expert help, and many hospitals have feeding support too. Signs your baby is getting enough include regular wet and dirty nappies, feeding well, being alert when awake, and steady growth. Contact a health professional if your baby is feeding poorly, unusually sleepy or hard to wake, has fewer wet nappies than expected, or is not gaining weight. Trust your instincts and ask for help early — support is there for every feeding choice.