Radiation-oxidative exposure treatment compositions may include a mixture of micronutrient multivitamin and trace elements, a mixture of antioxidants and chemopreventative agents, and optionally a mixture of fatty acids. Methods of treatment of a subject exposed to a radiation source or an oxidative stress with the radiation-oxidative exposure treatment composition may include the step of administering to the subject a daily dose of the radiation-oxidative exposure treatment composition such that the life shortening effects induced by the radiation source or the oxidative stress are ameliorated.
