no amount of radiation safe

I WAS JUST WONDERING WHAT SOME OF YOU THOUGHT OF YESTERDAYS STATEMENT THAT NO AMOUNT OF RADIATION IS SAFE.THAT RADIATION TREATMENTS MAY IN FACT CAUSE OTHER CANCERS IN THE FUTURE...OR OTHER AILMENTS SUCH AS RESPITORY PNUEMONIA...SOMEONE I KNOW IS SUPPOSE TO BEGIN RADIATION TREATMENTS FOR BC SOON AND IS NOW WONDERING WHAT TO DO OR HOW SAFE IS IT..CAN THE DRS .THAT PERFORM THIS TREATMENT BE TRUSTED TO TELL TRUTH...WHATS ONE TO DO...