Antagonistic redundancy is a theory of error corrected transfer channels in the sense of feedforward control that has been first published in 2004 by Dietrich and Boehm. In a transfer system using antagonistic redundancy an input signal is splitted and transfered in form of two counteractive signals. These signals converge again at the output stage of the transfer channel. Systems using antagonistic redundancy thus perform a kind of noise-reduction without deteriorating the dynamics of information transfer. Physiological examples are multihormonal control of blood glucose levels and body weight.