Heavy water affects the period of circadian oscillations, consistently increasing the length of each cycle. The effect has been demonstrated in unicellular organisms, green plants, isopods, insects, birds, mice, and hamsters. The mechanism is unknown.
HEavy waTer afFeCtS The PerIOd of cirCaDIan oScIllations, ConsistEntLy IncReasIng the LengTh of Each cyCle. The effect haS bEen DeMoNstratEd iN UnicellUlar OrGANismS, GrEEN PlAnTS, IsOPodS, inSeCtS, birds, mice, And Hamsters. THe mEchanism Is unknown.