Rad Absorption (Broken Steel)

 is a perk added to Fallout 3 with the Broken Steel add-on. It makes a reappearance in Fallout: New Vegas.

Fallout 3
With this perk, your radiation level will decrease by 1 rad every 60 seconds (game time) so long as the player is not currently being exposed to radiation (standing in radioactive water, for instance) - the perk will still be reducing the radiation but the new accumulation of rads will more than overpower the absorption effect. Waiting one hour will heal 60 rads, meaning that waiting 17 hours will reduce your rad count to zero from any amount. The rate also applies to fast travel, sleeping and using the wait function itself.

This perk is useful in preventing rad build up, which combined with a high radiation resistance can reduce incidences of serious radiation poisoning to few and far between. It synchronizes well with Solar Powered for healing minor health damage and minor radiation poisoning during daylight hours. It also makes most radiation gained from consumables entirely negligible, allowing even the potent slop served in The Pitt to be a useful alternative to stimpaks.

Much of the perk's effectiveness is negated by the My First Infirmary present in the player's house. Since most missions can be postponed, it is often simpler to return home to clear rad buildup rather than wait it out. In addition, players who rarely sleep will find much less benefit to it.

Fallout: New Vegas
This perk remains functionally identical to the one in Fallout 3.

Combined with a high Radiation resistance, this perk allows players to remain in highly irradiated areas indefinitely without the use of RadAway.

The high requirements for this perk reduce its usefulness. By level 28, any player should be able to afford the doctor visits or RadAway to remove radiation.

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