Signals from radiation-injured cells travel throughout the body.
In the 1950s, Russian researchers noted total body irradiation had an estrogenic effect and caused animals to go into estrus. It was presumed to be a pituitary effect, but irradiation of the foot showed the same whole-body effect.[1]
Magnesium is closely involved in repairing irradiation damage when the thyroid is active.
Progesterone decreases the injury. Thyroid increases the rate of repair.