Nurturing life Your reference in perinatal nutrition, from pregnancy to childhood

Does the diet of the mother affect the quality of breast milk?

Published on :
By : Nurturing Life's Nutrition Team | Montreal Diet Dispensary
— Updated on :

Yes, the mother’s diet influences the content of certain nutrients in her milk.

The type of fat found in milk depends on the food intake of the mother. If the mother consumes a lot of sources of omega-3, such as oily fish, her milk will contain more. Omega-3s are essential for the brain development of the baby.

The presence of vitamins B and C in breast milk is influenced by the mother’s diet. Vitamin C is found mainly in fruits, especially citrus fruits, and vegetables. Also, women who consume little or no animal products must ensure a sufficient supply of vitamin B12, either by consuming fortified foods or supplements. For example, soy products and soy beverages are often fortified with B12.

In general, the presence of vitamins A, D, E and K in breast milk depends also on the diet of the mother. Particular attention should be paid to vitamin D, since breast milk contains very little. Breastfed babies are also at higher risk of deficiency. It is therefore advisable for all exclusively breastfed babies to get a vitamin D supplement of 400 international units (IU) per day.

Finally, the nursing mother may benefit from nutritional assessment with a nutritionist to avoid dietary deficiencies. A varied and balanced diet will ensure that her milk contains everything the baby needs.


  • Agence de développement de réseaux locaux de services de santé et de services sociaux (Agence SSS) de la Mauricie et du Centre-du-Québec. (2004). Vers une culture d’allaitement. Document d’autoformation. Trois-Rivières.
  • American Academy of pediatrics. Policy statement. (2012). Breastfeeding and the use of human milk. Pediatrics, 129(3), e827 -e841
  • Riordan, J. (2004). Breastfeeding and human lactation (3e éd.). Sudbury, Massachusetts: Jones and Bartlett publishers.


The Public Health Agency of Canada has contributed financially to the production of Nurturing Life.

The views expressed herein do not necessarily represent the official views of the Public Health Agency of Canada.