Radiation (Fallout 4)

Radiation is an environmental hazard in Fallout 4.

Overview
Unlike in previous titles, accumulating radiation in Fallout 4 does not reduce SPECIAL statistics. Rather, it ticks away on the health bar, lowering one's maximum health; therefore, the more radiation one accumulates, the lesser one's health. As in Fallout 3 and Fallout: New Vegas, the maximum number of rads one can take before dying from hit point loss is 1000.

Several perks, such as Lead Belly, Aquaboy, and Rad Resistant are dedicated to reducing the amount of radiation taken, along with a special decontamination arch that can be found around the world and also be built by the player to cleanse them of any radiation for free. Additionally, several pieces of armor can be modified to improve radiation resistance.

Unlike earlier titles, radiation is also weaponized in the game, in the form of Gamma guns, rifles, and traps, as non-player human characters are no longer immune to radiation, and as such, can be killed by it.

High radiation locations

 * Hugo's hole, a marble enclosure near a quarry containing numerous radioactive barrels, peaks at 69 rads/second.
 * Mass Fusion disposal site, a portion of Lake Cochituate where Mass Fusion dumped large quantities of radioactive waste, peaks at 17 rads/second.
 * Most waterways, including the Charles and Saugus Rivers and the Atlantic Ocean, are irradiated to 10 rads/second.
 * Mass Fusion containment shed, a shed used to store Mass Fusion's nuclear waste, peaks at 10 rads/second.
 * Crater house, an airplane crash site occupied by Children of Atom, peaking at 6 rads/second.
 * The Glowing Sea, a large area with pervasive radiation, peaks at 5 rads/second.