<<The reason that breastmilk nourishes human babies perfectly with what
would seem sub-optimal levels of nutrients is in the presentation- many
nutrients come with carrier proteins to maximize their absorbtion, and
the balance of all the nutrients together serves to maximize the
absorbtion of each particular nutrient.>>

I was listening to a tape of a presentation by Marshall Klaus from the 1994
ILCA conference . He mentions gastrin and other hormones in
breastmilkpromoting growth of the villae in the intestines, thus increasing
the amount of energy obtained from the milk, explaining the need for lower
amounts of milk needed in breastfed babies.( That may not be exactly what he
said, but what I can recall.  It was snowing and I was also trying to stay on
the road)