At 05:17 PM 1/12/98 -0500, you wrote:

>On Mon, 12 Jan 1998 08:45:32 -0500 Karen Foard <[log in to unmask]>
>writes:
>> The article goes on to describe the reduction of IgA proteins in the
>milk of women >who have strenuously exercised--up to 60% less IgA in the
>milk after 10 minutes
>>of exercise, 73% less after 30 minutes of exercise.  However, levels
>rose quickly and >were virtually the same an hour after exercise....>>
>
>
>And how much IgA do babies fed formula get?  Hmm????  Seems like
>breastfed babes are still way ahead.....
>
>Karen Zeretzke, MEd, IBCLC

It seems to me that this is only an issue because of the sedentary nature of
"modern" society.  In a society where more people did more manual labor,
such strenuous workouts would be unneeded because women would get adequate
physical activity just by being alive.  Either that, or such changes in IgA
content would be normal because women would have periods of high physical
activity in their day-to-day lives.  Maybe this is just a species-specific
reaction to physical activity.

Nancy Jo Bykowski
Managing Editor, NEW BEGINNINGS