Downloaded all patches and bought the new DLC. When I start the game from a save and get the radio message, my health starts going down and then I die. I am not being attacked or radiated. The only way I can play the game now is enabling god mode in the console. Any ideas? Is this happening to anyone else?

Its the strangest thing. I can play the DLC, have fun.. but when I quit and reload my current game.. my health goes down, so I have to enable cheats to not automatically die. Crazy! I am NOT playing hardcoe mode. :sadvaultboy:

Is it possibly animal poison?