Just curious and a tad confused as most of what i've read on the internet suggests it doesn't. However, I came across this book today in a public library (not my library so was unable to take it out)www.amazon.co.uk/New-Breastfeeding-Diet-Plan-Breakthrough/dp/0071461604/ref=sr_1_3?ie=UTF8&s=books&q id=1241816482&sr=8-3 . I didn't have much time to browse as dd needed my attention, but it did mention that mothers intake of omega3 during pregnancy and whilst breastfeeding will affect the levels in her milk and it suggested that higher levels were likely to be more beneficial for baby. It also discussed how vitamin and mineral deficients in mother could lead to deficiencies in baby eg vitamin D and calcium (rickets) and also how toxins from foods eaten by mother are removed via breastmilk direct into baby. I really do find this fascinating and am planning on getting hold of a copy to learn more (i'm almost 5 months into breastfeeding my dd). It did cite research but of course I don't know how robust this might be.
I'm posting as i'm curious how much other mumsnetters know about this area and if others are supplimenting/ taking extra care of diet with quality of breastmilk in mind?