Hi Diana,
This paper found 10-15% of women were not able to produce sufficient milk. I too thought that the original stat come from here but I think not.
Karleen Gribble
Australia
On 20/03/2013, at 2:18 AM, Diana Cassar-Uhl wrote:

> Karleen, I think it was first estimated at 5% by Neifert, Seacat, and Jobe,
> in this paper:
> 
> Neifert, M. R., Seacat, J. M., & Jobe, W. E. (1985). Lactation failure due
> to insufficient glandular development of the breast. *Pediatrics, 76*(5),
> 823-828.
> 
> 
> 
> --Diana Cassar-Uhl, IBCLC
> 
> NY, U.S.A.
> 
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