The most recent study of a big cohort of babies that I am aware of 
show that 6.6 per cent weight loss is the *median* amount, based on 
term babies of > 2500 g at birth.  This  study, done in Glasgow, 
comprised 900 + babies, 45% breast fed, 42% formula fed, 13% breast 
and formula fed:

http://fn.bmjjournals.com/cgi/content/abstract/88/6/F472

I would be concerned  if weight loss above the median was 
automatically thought to be a sign of poor bf, any more than assuming 
babies born below the 50th percentile (also a median) would be 
assumed to be 'low birthweight'  ....as Laurie and Kathy say, the 
important aspect of all this is 'how well is the baby feeding?' and 
'is he strong enough to be transferring sufficient milk?' and we can 
only assess this fully  by observation and questioning.


As ever,  the key is looking at "the whole baby' and his mother.

Heather Welford Neil

NCT bfc, tutor, UK

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