Iron
Holmes says during breastfeeding your body will rapidly use up your iron stores, so you need to take care to replace them regularly.
"Ensure that you are consuming iron-rich foods such as red meat, chicken and fish, nuts and seeds, leafy green vegetables and legumes."
Read more at http://coach.nine.com.au/2015/08/18/12/41/top-foods-for-breastfeeding-mums#RqC4RXDPhFEHhWKD.99