05/08/2026
Day 5 Facebook post
“Don’t let your baby breastfeed for more than 10 minutes or they’ll get too tired.”
This is still surprisingly common advice, but it was never meant for healthy, full-term babies.
The concern came from neonatal care, where clinicians were understandably thinking about preterm and medically compromised babies. The theory was that a vulnerable baby might use more energy breastfeeding than they received from the breastmilk.
But when researchers compared breastfeeding and bottle-feeding in stable preterm babies, that is not what they found.
Even though the breastfeeds lasted longer, there was no significant difference in energy expenditure after the two types of feed.
A longer feed was not a more exhausting feed. And breastfeeding didn't use more energy than bottlefeeding.
Other studies have found that breastfeeding may actually be more physiologically stable for preterm babies.
During breastfeeding, babies have been found to have:
🤍 higher oxygen saturation
🤍 fewer episodes of oxygen desaturation
🤍 fewer signs of physiological stress
🤍 more favourable heart rate responses
🤍 more efficient milk transfer
A 2026 randomised controlled study of 90 preterm infants found that oxygen saturation increased and heart rate decreased during breastfeeding. The babies also transferred more milk and fed more efficiently than those receiving their first oral feed from a bottle.
During bottle-feeding, oxygen saturation decreased, and heart rate increased.
The bottle was not the physiologically easier option.
Of course, some babies really are too unwell or immature to safely feed by mouth. But these babies need to be fed milk through a nasogastric tube while they develop the stability and skills needed for oral feeding.
The answer is not to replace the breast with a bottle.
And for a healthy term baby who is feeding effectively:
If they have enough energy to feed from a bottle, they have enough energy to feed from the breast.
There is no reason to stop a breastfeed at ten minutes because of the fear that your baby will become too tired.
Let your baby take the time they need.
Watch your baby, not the clock.
🤱 Sometimes the best way to support breastfeeding isn’t to change the baby. It’s to understand the baby.
Tomorrow's post: “If your baby takes a bottle after breastfeeding, they must still have been hungry.”
References
Berger I, Weintraub V, Kopolovitz R, Dollberg S. Energy expenditure in breastfed and bottle-fed preterm infants. Archives of Disease in Childhood. 2009.
Chen CH, Wang TM, Chang HM, Chi CS. The effect of breast- and bottle-feeding on oxygen saturation and body temperature in preterm infants. Journal of Human Lactation. 2000;16(1):21–27.
Sabaz N, Gözen D, Taştekin A. Effects of breastfeeding and bottle feeding as the initial oral feeding on physiological parameters and feeding performance in preterm infants: a randomised controlled study. Journal of Pediatric Gastroenterology and Nutrition. 2026.
Simpson C, Schanler RJ, Lau C. Early introduction of oral feeding in preterm infants. Pediatrics. 2002.
El-Kassas O, Amer A, Abdel-Hady H, et al. The transition from tube feeding to oral feeding algorithm in preterm infants: a case-control study. BMC Pediatrics. 2024.