The naturally occurring dipeptide carnosine (beta-alanyl-L-histidine) has b
een found to exert an anti-senescence effect when used as a dietary supplem
ent. Carnosine clearly improved the external appearance of experimental ani
mals and provided beneficial physiological effects, thus maintaining the an
imals in better condition than control animals receiving no carnosine or a
mixture of beta-alanine and L-histidine.