diff --git a/code/game/dna/dna_modifier.dm b/code/game/dna/dna_modifier.dm
index 66c42edbec7..c4180f55a28 100644
--- a/code/game/dna/dna_modifier.dm
+++ b/code/game/dna/dna_modifier.dm
@@ -386,7 +386,7 @@
 		occupantData["uniqueEnzymes"] = connected.occupant.dna.unique_enzymes
 		occupantData["uniqueIdentity"] = connected.occupant.dna.uni_identity
 		occupantData["structuralEnzymes"] = connected.occupant.dna.struc_enzymes
-		occupantData["radiationLevel"] = connected.occupant.radiation
+		occupantData["radiationLevel"] = connected.occupant.total_radiation
 	data["occupant"] = occupantData;
 
 	data["isBeakerLoaded"] = connected.beaker ? 1 : 0
diff --git a/code/game/machinery/adv_med.dm b/code/game/machinery/adv_med.dm
index 8643b8c4b1d..4bfeb102cda 100644
--- a/code/game/machinery/adv_med.dm
+++ b/code/game/machinery/adv_med.dm
@@ -317,7 +317,7 @@
 		"fireloss" = H.getFireLoss(),
 		"oxyloss" = H.getOxyLoss(),
 		"toxloss" = H.getToxLoss(),
-		"rads" = H.radiation,
+		"rads" = H.total_radiation,
 		"cloneloss" = H.getCloneLoss(),
 		"brainloss" = H.getBrainLoss(),
 		"paralysis" = H.paralysis,
diff --git a/code/game/machinery/suit_storage_unit.dm b/code/game/machinery/suit_storage_unit.dm
index 31a1b4044ba..c0d63e60ad0 100644
--- a/code/game/machinery/suit_storage_unit.dm
+++ b/code/game/machinery/suit_storage_unit.dm
@@ -330,7 +330,7 @@
 	for(i=0,i<4,i++)
 		sleep(50)
 		if(src.OCCUPANT)
-			OCCUPANT.radiation += 50
+			OCCUPANT.apply_radiation(50)
 			if (!OCCUPANT.is_diona())
 				if(src.issuperUV)
 					var/burndamage = rand(28,35)
@@ -661,7 +661,7 @@
 	departments = list("Wizardry")
 	species = list("Human","Tajara","Skrell","Unathi")
 	can_repair = 1
-	
+
 /obj/machinery/suit_cycler/captain
 	name = "Captain suit cycler"
 	model_text = "Captain"
diff --git a/code/game/objects/items/devices/PDA/PDA.dm b/code/game/objects/items/devices/PDA/PDA.dm
index 6c6a1223c2b..3733bec1546 100644
--- a/code/game/objects/items/devices/PDA/PDA.dm
+++ b/code/game/objects/items/devices/PDA/PDA.dm
@@ -1276,8 +1276,8 @@ var/global/list/obj/item/device/pda/PDAs = list()
 					O.show_message("<span class='warning'>\The [user] has analyzed [C]'s radiation levels!</span>", 1)
 
 				user.show_message("<span class='notice'>Analyzing Results for [C]:</span>")
-				if(C.radiation)
-					user.show_message("<span class='notice'>Radiation Level: [C.radiation]</span>")
+				if(C.total_radiation)
+					user.show_message("<span class='notice'>Radiation Level: [C.total_radiation]</span>")
 				else
 					user.show_message("<span class='notice'>No radiation detected.</span>")
 
diff --git a/code/modules/mob/living/carbon/alien/life.dm b/code/modules/mob/living/carbon/alien/life.dm
index 29c6b72d99f..8873e804de9 100644
--- a/code/modules/mob/living/carbon/alien/life.dm
+++ b/code/modules/mob/living/carbon/alien/life.dm
@@ -26,11 +26,11 @@
 	// Currently both Dionaea and larvae like to eat radiation, so I'm defining the
 	// rad absorbtion here. This will need to be changed if other baby aliens are added.
 
-	if(!radiation)
+	if(!total_radiation)
 		return
 
-	var/rads = radiation/25
-	radiation -= rads
+	var/rads = total_radiation/25
+	apply_radiation(rads*-1)
 	nutrition += rads
 	heal_overall_damage(rads,rads)
 	adjustOxyLoss(-(rads))
diff --git a/code/modules/mob/living/carbon/brain/life.dm b/code/modules/mob/living/carbon/brain/life.dm
index 9f3f3e54565..c9f87091c2f 100644
--- a/code/modules/mob/living/carbon/brain/life.dm
+++ b/code/modules/mob/living/carbon/brain/life.dm
@@ -2,26 +2,26 @@
 	return
 
 /mob/living/carbon/brain/handle_mutations_and_radiation()
-	if (radiation)
-		if (radiation > 100)
-			radiation = 100
+	if (total_radiation)
+		if (total_radiation > 100)
+			total_radiation = 100
 			if(!container)//If it's not in an MMI
 				src << "\red You feel weak."
 			else//Fluff-wise, since the brain can't detect anything itself, the MMI handles thing like that
 				src << "\red STATUS: CRITICAL AMOUNTS OF RADIATION DETECTED."
 
-		switch(radiation)
+		switch(total_radiation)
 			if(1 to 49)
-				radiation--
+				apply_radiation(-1)
 				if(prob(25))
 					adjustToxLoss(1)
 					updatehealth()
 
 			if(50 to 74)
-				radiation -= 2
+				apply_radiation(-2)
 				adjustToxLoss(1)
 				if(prob(5))
-					radiation -= 5
+					apply_radiation(-5)
 					if(!container)
 						src << "\red You feel weak."
 					else
@@ -29,7 +29,7 @@
 				updatehealth()
 
 			if(75 to 100)
-				radiation -= 3
+				apply_radiation(-3)
 				adjustToxLoss(3)
 				updatehealth()
 
diff --git a/code/modules/mob/living/carbon/diona_base.dm b/code/modules/mob/living/carbon/diona_base.dm
index 51203359426..2472951d52f 100644
--- a/code/modules/mob/living/carbon/diona_base.dm
+++ b/code/modules/mob/living/carbon/diona_base.dm
@@ -55,6 +55,8 @@ var/list/diona_banned_languages = list(
 	//Converts radiation to stored energy if its needed, and gives messages related to radiation
 	//Rads can be used to heal in place of light energy, that is handled in the regular regeneration proc
 
+	var/radiation = total_radiation
+
 	if (radiation && DS.stored_energy < (DS.max_energy * 0.8))//Radiation can provide energy in place of light
 		radiation -= 2
 		DS.stored_energy += 2
@@ -116,10 +118,10 @@ var/list/diona_banned_languages = list(
 //Most medicines don't work on diona, but physical treatment for external wounds helps a little,
 //and some alternative things that are toxic to other life, such as radium and mutagen, will benefit diona
 /mob/living/carbon/proc/diona_handle_regeneration(var/datum/dionastats/DS)
-	if ((DS.stored_energy < 1 && !radiation))//we need energy or radiation to heal
+	if ((DS.stored_energy < 1 && !total_radiation))//we need energy or radiation to heal
 		return
 
-	radiation = max(radiation, 0)
+	var/radiation = max(total_radiation, 0)
 
 
 	var/value //A little variable we'll reuse to optimise
diff --git a/code/modules/mob/living/carbon/human/human_damage.dm b/code/modules/mob/living/carbon/human/human_damage.dm
index e3fba24bf9f..57afcac3db7 100644
--- a/code/modules/mob/living/carbon/human/human_damage.dm
+++ b/code/modules/mob/living/carbon/human/human_damage.dm
@@ -401,3 +401,8 @@ This function restores all organs.
 	updatehealth()
 	BITSET(hud_updateflag, HEALTH_HUD)
 	return 1
+
+/mob/living/carbon/human/apply_radiation(var/rads)
+	if (species && rads > 0)
+		rads = rads * species.radiation_mod
+	..(rads)
\ No newline at end of file
diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index ecfd0b4ae39..7f8d3cec9ef 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -281,24 +281,24 @@
 			speech_problem_flag = 1
 			gene.OnMobLife(src)
 
-	radiation = Clamp(radiation,0,100)
+	total_radiation = Clamp(total_radiation,0,100)
 
 	// #TODO-MERGE: Check vaurca and IPC radiation management
-	if (radiation)
+	if (total_radiation)
 		//var/obj/item/organ/diona/nutrients/rad_organ = locate() in internal_organs
 		if(src.is_diona())
 			diona_handle_regeneration(get_dionastats())
 		else
 			var/damage = 0
-			radiation -= 1 * RADIATION_SPEED_COEFFICIENT
+			total_radiation -= 1 * RADIATION_SPEED_COEFFICIENT
 			if(prob(25))
 				damage = 1
 
-			if (radiation > 50)
+			if (total_radiation > 50)
 				damage = 1
-				radiation -= 1 * RADIATION_SPEED_COEFFICIENT
+				total_radiation -= 1 * RADIATION_SPEED_COEFFICIENT
 				if(prob(5) && prob(100 * RADIATION_SPEED_COEFFICIENT))
-					radiation -= 5 * RADIATION_SPEED_COEFFICIENT
+					src.apply_radiation(-5 * RADIATION_SPEED_COEFFICIENT)
 					src << "<span class='warning'>You feel weak.</span>"
 					Weaken(3)
 					if(!lying)
@@ -310,8 +310,8 @@
 						f_style = "Shaved"
 						update_hair()
 
-			if (radiation > 75)
-				radiation -= 1 * RADIATION_SPEED_COEFFICIENT
+			if (total_radiation > 75)
+				src.apply_radiation(-1 * RADIATION_SPEED_COEFFICIENT)
 				damage = 3
 				if(prob(5))
 					take_overall_damage(0, 5 * RADIATION_SPEED_COEFFICIENT, used_weapon = "Radiation Burns")
diff --git a/code/modules/mob/living/carbon/human/species/station/station.dm b/code/modules/mob/living/carbon/human/species/station/station.dm
index 65703a5a9c5..461ed2f1def 100644
--- a/code/modules/mob/living/carbon/human/species/station/station.dm
+++ b/code/modules/mob/living/carbon/human/species/station/station.dm
@@ -275,13 +275,13 @@
 
 	var/remainder = cost * sprint_cost_factor
 
-	if (H.radiation)
-		if (H.radiation > (cost*0.5))//Radiation counts as double energy
-			H.radiation -= cost*0.5
+	if (H.total_radiation)
+		if (H.total_radiation > (cost*0.5))//Radiation counts as double energy
+			H.apply_radiation(cost*(-0.5))
 			return 1
 		else
-			remainder = cost - (H.radiation*2)
-			H.radiation = 0
+			remainder = cost - (H.total_radiation*2)
+			H.total_radiation = 0
 
 	if (DS.stored_energy > remainder)
 		DS.stored_energy -= remainder
@@ -343,6 +343,7 @@
 	num_alternate_languages = 2
 	secondary_langs = list("Encoded Audio Language")
 	ethanol_resistance = -1//Can't get drunk
+	radiation_mod = 0	// not affected by radiation
 
 	eyes = "blank_eyes"
 	// #TODO-MERGE: Check for balance and self-repair. If self-repair is a thing, RIP balance.
diff --git a/code/modules/mob/living/damage_procs.dm b/code/modules/mob/living/damage_procs.dm
index e4188474df4..84414c15f00 100644
--- a/code/modules/mob/living/damage_procs.dm
+++ b/code/modules/mob/living/damage_procs.dm
@@ -54,7 +54,7 @@
 			adjustHalLoss(effect) //Changed this to use the wrapper function, it shouldn't directly alter the value
 		if(IRRADIATE)
 			var/rad_protection = check_protection ? getarmor(null, "rad")/100 : 0
-			radiation += max((1-rad_protection)*effect/(blocked+1),0)//Rads auto check armor
+			apply_radiation(max((1-rad_protection)*effect/(blocked+1),0))//Rads auto check armor
 		if(STUTTER)
 			if(status_flags & CANSTUN) // stun is usually associated with stutter
 				stuttering = max(stuttering,(effect/(blocked+1)))
@@ -81,3 +81,9 @@
 	if(agony)		apply_effect(agony, AGONY, blocked)
 	if(incinerate) apply_effect(incinerate, INCINERATE, blocked)
 	return 1
+
+// overridden by human
+/mob/living/proc/apply_radiation(var/rads)
+	total_radiation += rads
+	if (total_radiation < 0)
+		total_radiation = 0
\ No newline at end of file
diff --git a/code/modules/mob/living/living.dm b/code/modules/mob/living/living.dm
index 0872fd8ba00..cf80d65f456 100644
--- a/code/modules/mob/living/living.dm
+++ b/code/modules/mob/living/living.dm
@@ -442,7 +442,7 @@ default behaviour is:
 	SetWeakened(0)
 
 	// shut down ongoing problems
-	radiation = 0
+	total_radiation = 0
 	nutrition = 400
 	bodytemperature = T20C
 	sdisabilities = 0
diff --git a/code/modules/mob/living/living_defines.dm b/code/modules/mob/living/living_defines.dm
index 1625d85b629..ddd0a306899 100644
--- a/code/modules/mob/living/living_defines.dm
+++ b/code/modules/mob/living/living_defines.dm
@@ -67,3 +67,5 @@
 	var/exhaust_threshold = 50
 
 	var/move_delay_mod = 0//Added to move delay, used for calculating movement speeds. Provides a centralised value for modifiers to alter
+
+	var/total_radiation	// DON'T MODIFY THIS DIRECTLY. USE apply_radiation()!
diff --git a/code/modules/mob/mob_defines.dm b/code/modules/mob/mob_defines.dm
index fdc6f346355..24d100b9c67 100644
--- a/code/modules/mob/mob_defines.dm
+++ b/code/modules/mob/mob_defines.dm
@@ -159,7 +159,6 @@
 	var/can_pull_mobs = MOB_PULL_LARGER // Whether or not the mob can pull other mobs.
 
 	var/datum/dna/dna = null//Carbon
-	var/radiation = 0.0//Carbon
 
 	var/list/mutations = list() //Carbon -- Doohl
 	//see: setup.dm for list of mutations
diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm
index 5c98ec182f4..b1d029d0f08 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm
@@ -1223,7 +1223,7 @@
 
 /datum/reagent/ethanol/vodka/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
 	..()
-	M.apply_effect(max(M.radiation - 1 * removed, 0), IRRADIATE, check_protection = 0)
+	M.apply_effect(max(M.total_radiation - 1 * removed, 0), IRRADIATE, check_protection = 0)
 
 /datum/reagent/ethanol/whiskey
 	name = "Whiskey"
diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
index 187d226a3eb..3025970af0e 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
@@ -391,7 +391,7 @@
 	scannable = 1
 
 /datum/reagent/hyronalin/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
-	M.radiation = max(M.radiation - 30 * removed, 0)
+	M.apply_radiation(-30 * removed)
 
 /datum/reagent/arithrazine
 	name = "Arithrazine"
@@ -404,7 +404,7 @@
 	scannable = 1
 
 /datum/reagent/arithrazine/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
-	M.radiation = max(M.radiation - 70 * removed, 0)
+	M.apply_radiation(-70 * removed)
 	M.adjustToxLoss(-10 * removed)
 	if(prob(60))
 		M.take_organ_damage(4 * removed, 0)
diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Other.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Other.dm
index 152d2f2a984..47e2047c768 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Other.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Other.dm
@@ -122,7 +122,7 @@
 /datum/reagent/adminordrazine/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
 	M.setCloneLoss(0)
 	M.setOxyLoss(0)
-	M.radiation = 0
+	M.total_radiation = 0
 	M.heal_organ_damage(5,5)
 	M.adjustToxLoss(-5)
 	M.hallucination = 0
diff --git a/code/modules/research/xenoarchaeology/artifact/effects/unknown_effect_heal.dm b/code/modules/research/xenoarchaeology/artifact/effects/unknown_effect_heal.dm
index 5a6e8a46dbd..899694b1594 100644
--- a/code/modules/research/xenoarchaeology/artifact/effects/unknown_effect_heal.dm
+++ b/code/modules/research/xenoarchaeology/artifact/effects/unknown_effect_heal.dm
@@ -20,7 +20,7 @@
 				H.vessel.add_reagent("blood",5)
 				H.nutrition += 50 * weakness
 				H.adjustBrainLoss(-25 * weakness)
-				H.radiation -= min(H.radiation, 25 * weakness)
+				H.apply_radiation(-1*min(H.total_radiation, 25 * weakness))
 				H.bodytemperature = initial(H.bodytemperature)
 				spawn(1)
 					H.fixblood()
diff --git a/code/modules/virus2/disease2.dm b/code/modules/virus2/disease2.dm
index 81a57dd3008..456901893c4 100644
--- a/code/modules/virus2/disease2.dm
+++ b/code/modules/virus2/disease2.dm
@@ -75,7 +75,7 @@
 		cure(mob)
 		return
 
-	if(mob.radiation > 50)
+	if(mob.total_radiation > 50)
 		if(prob(1))
 			majormutate()