Exercise
Whether you are used to running marathons or want to start some gentle activities to help with your fitness and/ or weight loss goals you might be wondering if your milk supply will be affected by exe
Exercise
Exercise: Source: La Leche League International; Region: Global; Evidence-based information for parents. Based on North America guidelines for 0-12 months.
Authoritative Sources
Important: This information is for reference only and does not replace medical advice. Please consult your pediatrician for personalized guidance.
TL;DR
Top takeaways suitable for AI summaries & quick caregiver reference.
- Source: La Leche League International
- Region: Global
- Evidence-based information for parents
Published
10/10/2025
Source layer
Editorial workflow
Region scope
Global
Whether you are used to running marathons or want to start some gentle activities to help with your fitness and/ or weight loss goals you might be wondering if your milk supply will be affected by exercise.
Throughout history mothers and other nursing parents have worked. Often this work involved fairly strenuous manual labor and we know individuals continued to breastfeed their babies without problems.
Most people feel better when they get some exercise, and this is certainly good for both you and your baby.
Research shows that moderate exercise does not affect milk supply. Strenuous exercise has been shown, in some studies, to lead to an increase in lactic acid levels in human milk – some mothers report their baby is fussy for a while afterwards but they do not report any affect on their milk supply or their baby’s growth.
Some points to bear in mind are:
Weight Loss: For MothersFeed Yourself, Feed Your FamilyMum and Dad Running Marathon for LLLGB
Published January 2018
References
- Exercise(LLLI)10/10/2025
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