Chernobyl frogs exposed to radiation show no signs of accelerated aging or increased stress hormone levels

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The radiation levels experienced by the frogs living in Chernobyl have not affected their age or their rate of aging. These two traits do not differ, in fact, between specimens captured in areas with high levels of radiation and those living in control areas without radiation. Nor have differences been found in the levels of corticosterone, a hormone associated with the response to stress, depending on the radiation received by these amphibians.

These are the main findings of research led by the University of Oviedo and the Doñana Biological Station-CSIC—on which international experts have collaborated—that has analyzed, for the first time, the possible long-term effects of radiation on the age and rate of aging of Chernobyl fauna.

The work has been published in the journal Biology Letters. Germán Orizaola, professor of Zoology at the University of Oviedo, highlights that these results indicate that "the levels of radiation currently experienced by frogs in Chernobyl would not be sufficient to cause chronic damage to these organisms."

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