[Milk hormones and their physiological importance]

The paper deals with an analysis of the recently published literature on hormonal composition of milk. The origin of milk hormones, the mechanisms of their penetration into internal medium of a newborn and effect on formatting the neuroendocrinic functions and development of the immunity in a postnatal ontogenesis are being studied. The question relating to a need of isolating the functional system "mother--nursing baby" and to long-term negative effect of the use of artificial milk mixtures instead natural breast milk is posed. The dependence of the "mother--infant" system upon environments is shown.

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