Here, take a few radiation Chems, as my little way of saying, "I'm sorry I twisted your DNA like a kitten with a ball of yarn."Moira Brown

Rad Regeneration is a quest perk in Fallout 3.


When under the effects of Advanced Radiation Poisoning (400+ Rads) any crippled limbs will automatically regenerate.

This perk is gained by getting exposed to Critical Radiation Poisoning (600+ rads) for Moira's Wasteland Survival Guide. This mutation is a result of Moira's experimental radiation treatment.


  • Advanced Rad Poisoning causes a loss of 2 points of Endurance and 1 point of Agility. That is -4 to Big Guns and Unarmed, as well as -2 to Small Guns, Sneak, and total Action Points.
  • Adamantium Skeleton is better at protecting limbs from crippling injury, yet it carries no penalties. However, Rad Regeneration is easier to get, and having the regeneration active means you don't have to deal with the effects of crippled limbs; as soon as the limb becomes crippled, it starts healing, and even having a single point of 'limb health' means that the limb is no longer crippled. For best results, use both perks.
  • The perk still exists in the game files of Fallout: New Vegas, albeit only as legacy content.
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