On 13/09/2006, at 3:41, Ellen Penchuk, IBCLC wrote:
[soured expressed milk]
> I questioned her about changes in her diet, supplements, medications,
> etc... No change in anything. Can this really be caused be lipase? Has
> anyone experienced such a quick change to rancid milk after it has  
> been
> fine for months?

Something else to check would be the scrupulous cleanliness of her  
pump parts. Some mums begin to forget to remove and disassemble parts  
like valves completely for cleaning. (you haven't mentioned the pump  
type so I can't go in to specifics here).

You mentioned a five day rotation of milk - while technically within  
the "safe zone", this does seem rather long to me. Maybe she could  
rearrange things so that the baby is getting <24 hour old milk as  
much as possible? The fresher the better.

Lara Hopkins

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