What is Breast Compression?

Breast compression is a way of gently squeezing the breast during a breastfeed to put pressure on the milk glands causing them to release more milk and increase milk flow. Breast compression simulates a milk let-down (milk ejection reflex). Increasing milk flow in this way encourages a baby to keep sucking actively because he will be rewarded with more milk and this makes for more effective breastfeeding. As well as keeping a baby feeding actively at the breast for longer, breast compression can help to increase a milk supply by ensuring the breasts are more thoroughly emptied. The more frequently and thoroughly a baby breastfeeds and empties the breasts, the more milk will be made.

How do I do breast compression?

  • Breastfeed your baby as usual with a deep latch and good breastfeeding position.
  • During the breastfeed, watch for the moment when your baby stops sucking actively (the deep jaw movements slow down and you can’t hear any swallows).
  • Using a free hand, cup and squeeze the breast between thumb and fingers e.g. with the thumb on top of the breast and the fingers of the same hand below it. Alternatively, some mothers press the breast against the chest wall or have their fingers on top of the breast and their thumb below.
  • Place your hand far enough behind the nipple and areola so you don’t disturb your baby’s latch but close enough to put gentle pressure on the milk glands in the breast.
  • Avoid sliding your thumb or fingers along the breast and do not press so firmly that it is uncomfortable or painful.
  • Once milk starts to flow again, due to breast compression, your baby will start swallowing again, and you can maintain the pressure while he is still sucking and swallowing and then release the pressure and rest your hand when your baby pauses.
  • Repeat the compressions until there is no active swallowing.
  • Once baby stops actively sucking on the first breast even with compression, offer the other breast and repeat.

Pictures of breast compression

In the picture below, the baby is feeding in rugby hold on the left breast, and the mother uses her right hand to compress the breast and increase milk flow.

mother compresses her breast to help milk flow
Breast compressions in rugby hold

In the next picture the baby is feeding in cradle hold. The mother may need to move her thumb closer to her baby before compressing the breast but she can experiment to see what works for her.

Mother doing breast compression
Compressing the breast with the thumb simulates another let down

Finding the right pressure

A little practice will reveal how much gentle pressure is needed to reproduce a let down. The principle is similar to filling a rubber glove with water and squeezing it to find the leak—when you apply just enough pressure, water will spurt from any tiny holes in the rubber. Breast compression is sometimes compared to hand expressing breast milk into your baby’s mouth.

Jack Newman—Canadian paediatrician and breastfeeding expert—popularised this technique, he explains:

As long as it does not hurt your breast to compress, and as long as the baby is “drinking” (“open mouth wide—pause—then close mouth type” of suck), breast compression is working.

Keep the pressure up until the baby is just sucking without drinking even with the compression, and then release the pressure.

Will breast compression cause a blocked duct?

In the past mothers have often been cautioned against pressing on the breasts during a breastfeed for fear of causing a blocked duct. However, when done correctly and gently—to get baby sucking again, breast compression is a very useful technique for increasing milk flow and does not appear to cause problems. The key is not to press into the breast constantly throughout a feed, but to squeeze and release the breast at intervals as outlined above.

When do I need to use breast compression?

If breastfeeding is going perfectly well and your baby is getting enough milk and gaining weight you won’t need to worry about using breast compression. However if you have a low milk supply, a baby who is not gaining weight or a sleepy baby, breast compression can be very useful to maximise your baby’s milk intake. Jack Newman has a list of the times when breast compression is particularly useful:

The technique may be useful for:

  1. Poor weight gain in the baby
  2. Colic in the breastfed baby
  3. Frequent feedings and/or long feedings
  4. Sore nipples in the breastfeeding parent
  5. Recurrent blocked ducts and/or mastitis
  6. Encouraging the baby who falls asleep quickly to continue drinking not just sucking
  7. A “lazy” baby, or baby who seems to want to just “pacify”. Incidentally babies are not lazy, they respond to milk flow, so that if flow slows, babies may start to fall asleep, or if they are older, may pull away from the breast.

Videos of breast compressions

In the video clip below, Dr Jack Newman explains when to do breast compressions during a breastfeed. The mother cups her breast with her hand, her thumb rests on top of the breast and her fingers are below it. When baby is not swallowing the mother compresses her breast and her baby starts drinking well. Mother rests her hand when her baby stops drinking.

In this second video clip from Global Health Media breast compression is discussed as one of a range of ideas to increase milk supply. To jump to breast compression go to 2:05. Note the mothers in this video are using slightly different techniques to achieve breast compression compared to the first clip.

Summary

Breast compression is a useful technique to keep breast milk flowing during a breastfeed by gently squeezing and compressing the breast. Breast compression can increase milk flow, keep a baby feeding longer and, by emptying the breasts more thoroughly, it also helps to increase milk supply.

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