The present invention concerns [60]fullerene and stable biocompatible compositions comprising [60]fullerene dissolved in a carrier. The present invention also relates to a method for increasing the expected lifespan (longevity) of a mammal, which comprises a step of administering [60]fullerene or a composition comprising a therapeutically effective amount of [60]fullerene. The present invention further concerns a method for preserving a mammal to damages caused by free radicals using said [60]fullerene or said composition.
