I missed an earlier port.

code/modules/mob/living/brain/MMI.dm

@@ -57,7 +57,7 @@
 		newbrain.brainmob = null
 		brainmob.forceMove(src)
 		brainmob.container = src
-		if(!newbrain.damaged_brain) // the brain organ hasn't been beaten to death.
+		if(!newbrain.organ_flags & ORGAN_FAILING) // the brain organ hasn't been beaten to death.
 			brainmob.stat = CONSCIOUS //we manually revive the brain mob
 			GLOB.dead_mob_list -= brainmob
 			GLOB.alive_mob_list += brainmob

code/modules/mob/living/brain/brain_item.dm

@@ -7,11 +7,19 @@
 	layer = ABOVE_MOB_LAYER
 	zone = BODY_ZONE_HEAD
 	slot = ORGAN_SLOT_BRAIN
-	vital = TRUE
+	organ_flags |= ORGAN_VITAL
 	attack_verb = list("attacked", "slapped", "whacked")
+	///The brain's organ variables are significantly more different than the other organs, with half the decay rate for balance reasons, and twice the maxHealth
+	decay_factor = STANDARD_ORGAN_DECAY	/ 2		//30 minutes of decaying to result in a fully damaged brain, since a fast decay rate would be unfun gameplay-wise
+
+	maxHealth	= BRAIN_DAMAGE_DEATH
+	low_threshold = 45
+	high_threshold = 120
 	var/mob/living/brain/brainmob = null
-	var/damaged_brain = FALSE //whether the brain organ is damaged.
+	var/organ_flags & ORGAN_FAILING = FALSE //whether the brain organ is damaged.
 	var/decoy_override = FALSE	//I apologize to the security players, and myself, who abused this, but this is going to go.
+	//two variables necessary for calculating whether we get a brain trauma or not
+	var/damage_delta = 0
 
 	var/list/datum/brain_trauma/traumas = list()
 
@@ -90,22 +98,88 @@
 	if(brainmob)
 		O.attack(brainmob, user) //Oh noooeeeee
 
-/obj/item/organ/brain/examine(mob/user)
-	..()
+	if(istype(O, /obj/item/organ_storage)) //BUG_PROBABLE_CAUSE
+		return //Borg organ bags shouldn't be killing brains
 
-	if(brainmob)
-		if(brainmob.client)
-			if(brainmob.health <= HEALTH_THRESHOLD_DEAD)
-				to_chat(user, "It's lifeless and severely damaged.")
+	if((organ_flags & ORGAN_FAILING) && O.is_drainable() && O.reagents.has_reagent("neurine")) //Neurine fixes dead brains
+		. = TRUE //don't do attack animation.
+		var/cached_Bdamage = brainmob?.health 
+		var/datum/reagent/medicine/neurine/N = reagents.has_reagent("neurine")
+
+		if(O.reagents.has_reagent("mannitol")//Just a quick way to bolster the effects if someone mixes up a batch.
+			N.volume *= 1.5
+
+		if(!O.reagents.has_reagent("neurine", 10))
+			to_chat(user, "<span class='warning'>There's not enough neurine in [O] to restore [src]!</span>")
+			return
+		
+		user.visible_message("<span class='notice'>[user] starts to pour the contents of [O] onto [src].</span>", "<span class='notice'>You start to slowly pour the contents of [O] onto [src].</span>")
+		if(!do_after(user, 60, TRUE, src))
+			to_chat(user, "<span class='warning'>You failed to pour [O] onto [src]!</span>")
+			return
+
+		user.visible_message("<span class='notice'>[user] pours the contents of [O] onto [src], causing it to reform its original shape and turn a slightly brighter shade of pink.</span>", "<span class='notice'>You pour the contents of [O] onto [src], causing it to reform its original shape and turn a slightly brighter shade of pink.</span>")
+		setOrganDamage((damage - (0.10 * maxHealth)*N.volume))	//heals a small amount, and by using "setorgandamage", we clear the failing variable if that was up
+		O.reagents.clear_reagents()
+
+		if(cached_Bdamage) //Fixing dead brains yeilds a trauma
+			if(cached_Bdamage <= HEALTH_THRESHOLD_DEAD && brainmob.health > HEALTH_THRESHOLD_DEAD)
+				if(prob(90))
+					gain_trauma_type(BRAIN_TRAUMA_MILD)
+				if else(prob(50))
+					gain_trauma_type(BRAIN_TRAUMA_SEVERE)
+				else
+					gain_trauma_type(BRAIN_TRAUMA_SPECIAL)
+		return
+
+	if((organ_flags & ORGAN_FAILING) && O.is_drainable() && O.reagents.has_reagent("mannitol")) //attempt to heal the brain
+		. = TRUE //don't do attack animation.
+		var/datum/reagent/medicine/mannitol/M = reagents.has_reagent("mannitol")
+		if(brain_death || brainmob?.health <= HEALTH_THRESHOLD_DEAD) //if the brain is fucked anyway, do nothing
+				to_chat(user, "<span class='warning'>[src] is far too damaged, you'll have to use neurine on it!</span>")
+				return
+
+		if(!O.reagents.has_reagent("mannitol", 10))
+			to_chat(user, "<span class='warning'>There's not enough mannitol in [O] to restore [src]!</span>")
+			return
+
+		user.visible_message("<span class='notice'>[user] starts to pour the contents of [O] onto [src].</span>", "<span class='notice'>You start to slowly pour the contents of [O] onto [src].</span>")
+		if(!do_after(user, 60, TRUE, src))
+			to_chat(user, "<span class='warning'>You failed to pour [O] onto [src]!</span>")
+			return
+
+		user.visible_message("<span class='notice'>[user] pours the contents of [O] onto [src], causing it to reform its original shape and turn a slightly brighter shade of pink.</span>", "<span class='notice'>You pour the contents of [O] onto [src], causing it to reform its original shape and turn a slightly brighter shade of pink.</span>")
+		setOrganDamage((damage - (0.05 * maxHealth)*M.volume))	//heals a small amount, and by using "setorgandamage", we clear the failing variable if that was up
+		O.reagents.clear_reagents()
+		return
+	
+
+
+/obj/item/organ/brain/examine(mob/user)//BUG_PROBABLE_CAUSE to_chats changed to . += 
+	. = ..()
+
+	if(suicided)
+		. += "<span class='info'>It's started turning slightly grey. They must not have been able to handle the stress of it all.</span>"
+	else if(brainmob)
+		if(brainmob.get_ghost(FALSE, TRUE))
+			if(brain_death || brainmob.health <= HEALTH_THRESHOLD_DEAD)
+				. += "<span class='info'>It's lifeless and severely damaged, only the strongest of chems will save it.</span>"
+			else if(organ_flags & ORGAN_FAILING)
+				. += "<span class='info'>It seems to still have a bit of energy within it, but it's rather damaged... You may be able to restore it with some <b>mannitol</b>.</span>"
 			else
-				to_chat(user, "You can feel the small spark of life still left in this one.")
+				. += "<span class='info'>You can feel the small spark of life still left in this one.</span>"
+		else if(organ_flags & ORGAN_FAILING)
+			. += "<span class='info'>It seems particularly lifeless and is rather damaged... You may be able to restore it with some <b>mannitol</b> incase it becomes functional again later.</span>"
 		else
-			to_chat(user, "This one seems particularly lifeless. Perhaps it will regain some of its luster later.")
+			. += "<span class='info'>This one seems particularly lifeless. Perhaps it will regain some of its luster later.</span>"
 	else
 		if(decoy_override)
-			to_chat(user, "This one seems particularly lifeless. Perhaps it will regain some of its luster later.")
+			if(organ_flags & ORGAN_FAILING)
+				. += "<span class='info'>It seems particularly lifeless and is rather damaged... You may be able to restore it with some <b>mannitol</b> incase it becomes functional again later.</span>"
+			else
+				. += "<span class='info'>This one seems particularly lifeless. Perhaps it will regain some of its luster later.</span>"
 		else
-			to_chat(user, "This one is completely devoid of life.")
+			. += "<span class='info'>This one is completely devoid of life.</span>"
 
 /obj/item/organ/brain/attack(mob/living/carbon/C, mob/user)
 	if(!istype(C))
@@ -141,7 +215,7 @@
 		Insert(C)
 	else
 		..()
-
+/* TO BE REMOVED, KEPT IN CASE OF BUGS
 /obj/item/organ/brain/proc/get_brain_damage()
 	var/brain_damage_threshold = max_integrity * BRAIN_DAMAGE_INTEGRITY_MULTIPLIER
 	var/offset_integrity = obj_integrity - (max_integrity - brain_damage_threshold)
@@ -165,6 +239,42 @@
 		else if(adjusted_amount <= -DAMAGE_PRECISION)
 			obj_integrity = min(max_integrity, obj_integrity-adjusted_amount)
 	. = adjusted_amount
+*/
+
+/obj/item/organ/brain/on_life()
+	if(damage >= BRAIN_DAMAGE_DEATH) //rip
+		to_chat(owner, "<span class='userdanger'>The last spark of life in your brain fizzles out...</span>")
+		owner.death()
+		brain_death = TRUE
+
+/obj/item/organ/brain/process()	//needs to run in life AND death
+	..()
+	//if we're not more injured than before, return without gambling for a trauma
+	if(damage <= prev_damage)
+		prev_damage = damage
+		return
+	damage_delta = damage - prev_damage
+	if(damage > BRAIN_DAMAGE_MILD)
+		if(prob(damage_delta * (1 + max(0, (damage - BRAIN_DAMAGE_MILD)/100)))) //Base chance is the hit damage; for every point of damage past the threshold the chance is increased by 1% //learn how to do your bloody math properly goddamnit
+			gain_trauma_type(BRAIN_TRAUMA_MILD)
+	if(damage > BRAIN_DAMAGE_SEVERE)
+		if(prob(damage_delta * (1 + max(0, (damage - BRAIN_DAMAGE_SEVERE)/100)))) //Base chance is the hit damage; for every point of damage past the threshold the chance is increased by 1%
+			if(prob(20))
+				gain_trauma_type(BRAIN_TRAUMA_SPECIAL)
+			else
+				gain_trauma_type(BRAIN_TRAUMA_SEVERE)
+
+	if (owner)
+		if(owner.stat < UNCONSCIOUS) //conscious or soft-crit
+			if(prev_damage < BRAIN_DAMAGE_MILD && damage >= BRAIN_DAMAGE_MILD)
+				to_chat(owner, "<span class='warning'>You feel lightheaded.</span>")
+			else if(prev_damage < BRAIN_DAMAGE_SEVERE && damage >= BRAIN_DAMAGE_SEVERE)
+				to_chat(owner, "<span class='warning'>You feel less in control of your thoughts.</span>")
+			else if(prev_damage < (BRAIN_DAMAGE_DEATH - 20) && damage >= (BRAIN_DAMAGE_DEATH - 20))
+				to_chat(owner, "<span class='warning'>You can feel your mind flickering on and off...</span>")
+	//update our previous damage holder after we've checked our boundaries
+	prev_damage = damage
+	return
 
 /obj/item/organ/brain/Destroy() //copypasted from MMIs.
 	if(brainmob)

code/modules/mob/living/brain/life.dm

@@ -20,7 +20,7 @@
 		else if(istype(loc, /obj/item/organ/brain))
 			BR = loc
 		if(BR)
-			BR.damaged_brain = 1 //beaten to a pulp
+			BR.organ_flags & ORGAN_FAILING = 1 //beaten to a pulp
 
 /mob/living/brain/proc/handle_emp_damage()
 	if(emp_damage)

code/modules/mob/living/carbon/carbon.dm

@@ -814,7 +814,8 @@
 		reagents.clear_reagents()
 	var/obj/item/organ/brain/B = getorgan(/obj/item/organ/brain)
 	if(B)
-		B.damaged_brain = FALSE
+		B.organ_flags & ORGAN_FAILING = FALSE
+		B.brain_death = FALSE
 	for(var/thing in diseases)
 		var/datum/disease/D = thing
 		if(D.severity != DISEASE_SEVERITY_POSITIVE)

code/modules/mob/living/carbon/damage_procs.dm

@@ -40,14 +40,13 @@
 					update_damage_overlays()
 			else
 				adjustStaminaLoss(damage * hit_percent)
-		if(BRAIN)
-			adjustBrainLoss(damage * hit_percent)
 		//citadel code
 		if(AROUSAL)
 			adjustArousalLoss(damage * hit_percent)
 	return TRUE
 
 
+
 //These procs fetch a cumulative total damage from all bodyparts
 /mob/living/carbon/getBruteLoss()
 	var/amount = 0
@@ -113,6 +112,38 @@
 		return
 	adjustStaminaLoss(diff, updating, forced)
 
+/** adjustOrganLoss
+  * inputs: slot (organ slot, like ORGAN_SLOT_HEART), amount (damage to be done), and maximum (currently an arbitrarily large number, can be set so as to limit damage)
+  * outputs:
+  * description: If an organ exists in the slot requested, and we are capable of taking damage (we don't have GODMODE on), call the damage proc on that organ.
+  */
+/mob/living/carbon/adjustOrganLoss(slot, amount, maximum)
+	var/obj/item/organ/O = getorganslot(slot)
+	if(O && !(status_flags & GODMODE))
+		O.applyOrganDamage(amount, maximum)
+
+/** setOrganLoss
+  * inputs: slot (organ slot, like ORGAN_SLOT_HEART), amount(damage to be set to)
+  * outputs:
+  * description: If an organ exists in the slot requested, and we are capable of taking damage (we don't have GODMODE on), call the set damage proc on that organ, which can
+  *				 set or clear the failing variable on that organ, making it either cease or start functions again, unlike adjustOrganLoss.
+  */
+/mob/living/carbon/setOrganLoss(slot, amount)
+	var/obj/item/organ/O = getorganslot(slot)
+	if(O && !(status_flags & GODMODE))
+		O.setOrganDamage(amount)
+
+/** getOrganLoss
+  * inputs: slot (organ slot, like ORGAN_SLOT_HEART)
+  * outputs: organ damage
+  * description: If an organ exists in the slot requested, return the amount of damage that organ has
+  */
+/mob/living/carbon/getOrganLoss(slot)
+	var/obj/item/organ/O = getorganslot(slot)
+	if(O)
+		return O.damage
+
+
 ////////////////////////////////////////////
 
 //Returns a list of damaged bodyparts
@@ -213,24 +244,25 @@
 		update_damage_overlays()
 	update_stamina()
 
-/mob/living/carbon/getBrainLoss()
+/* TO_REMOVE
+/mob/living/carbon/getOrganLoss(ORGAN_SLOT_BRAIN)
 	. = 0
 	var/obj/item/organ/brain/B = getorganslot(ORGAN_SLOT_BRAIN)
 	if(B)
 		. = B.get_brain_damage()
 
 //Some sources of brain damage shouldn't be deadly
-/mob/living/carbon/adjustBrainLoss(amount, maximum = BRAIN_DAMAGE_DEATH)
+/mob/living/carbon/adjustOrganLoss(ORGAN_SLOT_BRAIN, amount, maximum = BRAIN_DAMAGE_DEATH)
 	if(status_flags & GODMODE)
 		return FALSE
-	var/prev_brainloss = getBrainLoss()
+	var/prev_brainloss = getOrganLoss(ORGAN_SLOT_BRAIN)
 	var/obj/item/organ/brain/B = getorganslot(ORGAN_SLOT_BRAIN)
 	if(!B)
 		return
 	B.adjust_brain_damage(amount, maximum)
 	if(amount <= 0) //cut this early
 		return
-	var/brainloss = getBrainLoss()
+	var/brainloss = getOrganLoss(ORGAN_SLOT_BRAIN)
 	if(brainloss > BRAIN_DAMAGE_MILD)
 		if(prob(amount * ((2 * (100 + brainloss - BRAIN_DAMAGE_MILD)) / 100))) //Base chance is the hit damage; for every point of damage past the threshold the chance is increased by 2%
 			gain_trauma_type(BRAIN_TRAUMA_MILD)
@@ -253,3 +285,4 @@
 	if(B)
 		var/adjusted_amount = amount - B.get_brain_damage()
 		B.adjust_brain_damage(adjusted_amount, null)
+*/

code/modules/mob/living/carbon/human/human_defense.dm

@@ -746,9 +746,54 @@
 				if(0 to NUTRITION_LEVEL_STARVING)
 					to_send += "<span class='danger'>You're starving!</span>\n"
 
+
+			//TODO: Convert these messages into vague messages, thereby encouraging actual dignosis.
+			//Compiles then shows the list of damaged organs and broken organs
+			var/list/broken = list()
+			var/list/damaged = list()
+			var/broken_message
+			var/damaged_message
+			var/broken_plural
+			var/damaged_plural
+			//Sets organs into their proper list
+			for(var/O in internal_organs)
+				var/obj/item/organ/organ = O
+				if(organ.organ_flags & ORGAN_FAILING)
+					if(broken.len)
+						broken += ", "
+					broken += organ.name
+				else if(organ.damage > organ.low_threshold)
+					if(damaged.len)
+						damaged += ", "
+					damaged += organ.name
+			//Checks to enforce proper grammar, inserts words as necessary into the list
+			if(broken.len)
+				if(broken.len > 1)
+					broken.Insert(broken.len, "and ")
+					broken_plural = TRUE
+				else
+					var/holder = broken[1]	//our one and only element
+					if(holder[lentext(holder)] == "s")
+						broken_plural = TRUE
+				//Put the items in that list into a string of text
+				for(var/B in broken)
+					broken_message += B
+				to_chat(src, "<span class='warning'> Your [broken_message] [broken_plural ? "are" : "is"] non-functional!</span>")
+			if(damaged.len)
+				if(damaged.len > 1)
+					damaged.Insert(damaged.len, "and ")
+					damaged_plural = TRUE
+				else
+					var/holder = damaged[1]
+					if(holder[lentext(holder)] == "s")
+						damaged_plural = TRUE
+				for(var/D in damaged)
+					damaged_message += D
+				to_chat(src, "<span class='info'>Your [damaged_message] [damaged_plural ? "are" : "is"] hurt.</span>")
+
 			if(roundstart_quirks.len)
 				to_send += "<span class='notice'>You have these quirks: [get_trait_string()].</span>\n"
-			
+
 			to_chat(src, to_send)
 		else
 			if(wear_suit)

code/modules/mob/living/carbon/human/life.dm

@@ -70,7 +70,7 @@
 	else if(eye_blurry)			//blurry eyes heal slowly
 		adjust_blurriness(-1)
 
-	if (getBrainLoss() >= 30) //Citadel change to make memes more often.
+	if (getOrganLoss(ORGAN_SLOT_BRAIN) >= 30) //Citadel change to make memes more often.
 		SEND_SIGNAL(src, COMSIG_ADD_MOOD_EVENT, "brain_damage", /datum/mood_event/brain_damage)
 		if(prob(3))
 			if(prob(25))

code/modules/mob/living/carbon/human/species.dm

@@ -1196,9 +1196,14 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 		if(mood && mood.sanity > SANITY_DISTURBED)
 			hunger_rate *= max(0.5, 1 - 0.002 * mood.sanity) //0.85 to 0.75
 
-		if(H.satiety > 0)
+		// Whether we cap off our satiety or move it towards 0
+		if(H.satiety > MAX_SATIETY)
+			H.satiety = MAX_SATIETY
+		else if(H.satiety > 0)
 			H.satiety--
-		if(H.satiety < 0)
+		else if(H.satiety < -MAX_SATIETY)
+			H.satiety = -MAX_SATIETY
+		else if(H.satiety < 0)
 			H.satiety++
 			if(prob(round(-H.satiety/40)))
 				H.Jitter(5)
@@ -1683,7 +1688,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 			if(BODY_ZONE_HEAD)
 				if(!I.is_sharp() && armor_block < 50)
 					if(prob(I.force))
-						H.adjustBrainLoss(20)
+						H.adjustOrganLoss(ORGAN_SLOT_BRAIN, 20)
 						if(H.stat == CONSCIOUS)
 							H.visible_message("<span class='danger'>[H] has been knocked senseless!</span>", \
 											"<span class='userdanger'>[H] has been knocked senseless!</span>")
@@ -1692,7 +1697,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 						if(prob(10))
 							H.gain_trauma(/datum/brain_trauma/mild/concussion)
 					else
-						H.adjustBrainLoss(I.force * 0.2)
+						H.adjustOrganLoss(ORGAN_SLOT_BRAIN, I.force * 0.2)
 
 					if(H.stat == CONSCIOUS && H != user && prob(I.force + ((100 - H.health) * 0.5))) // rev deconversion through blunt trauma.
 						var/datum/antagonist/rev/rev = H.mind.has_antag_datum(/datum/antagonist/rev)
@@ -1787,7 +1792,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 			else
 				H.adjustStaminaLoss(damage * hit_percent * H.physiology.stamina_mod)
 		if(BRAIN)
-			H.adjustBrainLoss(damage * hit_percent * H.physiology.brain_mod)
+			H.adjustOrganLoss(ORGAN_SLOT_BRAIN, damage * hit_percent * H.physiology.brain_mod)
 		if(AROUSAL)											//Citadel edit - arousal
 			H.adjustArousalLoss(damage * hit_percent)
 	return 1

code/modules/mob/living/carbon/human/species_types/dullahan.dm

@@ -64,7 +64,7 @@
 
 /obj/item/organ/brain/dullahan
 	decoy_override = TRUE
-	vital = FALSE
+	organ_flags = 0 
 
 /obj/item/organ/tongue/dullahan
 	zone = "abstract"
@@ -138,4 +138,4 @@
 			D.myhead = null
 			owner.gib()
 	owner = null
-	..()
+	..()

code/modules/mob/living/carbon/human/species_types/shadowpeople.dm

@@ -102,6 +102,7 @@
 	color = "#1C1C1C"
 	var/respawn_progress = 0
 	var/obj/item/light_eater/blade
+	decay_factor = 0
 
 
 /obj/item/organ/heart/nightmare/attack(mob/M, mob/living/carbon/user, obj/target)

code/modules/mob/living/carbon/life.dm

@@ -28,8 +28,10 @@
 	if(stat != DEAD)
 		handle_brain_damage()
 
+	/* BUG_PROBABLE_CAUSE
 	if(stat != DEAD)
 		handle_liver()
+	*/
 
 	if(stat == DEAD)
 		stop_sound_channel(CHANNEL_HEARTBEAT)
@@ -47,8 +49,23 @@
 
 //Start of a breath chain, calls breathe()
 /mob/living/carbon/handle_breathing(times_fired)
-	if((times_fired % 4) == 2 || failed_last_breath)
-		breathe() //Breathe per 4 ticks, unless suffocating
+	/mob/living/carbon/handle_breathing(times_fired)
+	var/next_breath = 4
+	var/obj/item/organ/lungs/L = getorganslot(ORGAN_SLOT_LUNGS)
+	var/obj/item/organ/heart/H = getorganslot(ORGAN_SLOT_HEART)
+	if(L)
+		if(L.damage > L.high_threshold)
+			next_breath--
+	if(H)
+		if(H.damage > H.high_threshold)
+			next_breath--
+
+	if((times_fired % next_breath) == 0 || failed_last_breath)
+		breathe() //Breathe per 4 ticks if healthy, down to 2 if our lungs or heart are damaged, unless suffocating
+		if(failed_last_breath)
+			SEND_SIGNAL(src, COMSIG_ADD_MOOD_EVENT, "suffocation", /datum/mood_event/suffocation)
+		else
+			SEND_SIGNAL(src, COMSIG_CLEAR_MOOD_EVENT, "suffocation")
 	else
 		if(istype(loc, /obj/))
 			var/obj/location_as_object = loc
@@ -56,6 +73,7 @@
 
 //Second link in a breath chain, calls check_breath()
 /mob/living/carbon/proc/breathe()
+	var/obj/item/organ/lungs = getorganslot(ORGAN_SLOT_LUNGS)
 	if(reagents.has_reagent("lexorin"))
 		return
 	if(istype(loc, /obj/machinery/atmospherics/components/unary/cryo_cell))
@@ -74,7 +92,7 @@
 	var/datum/gas_mixture/breath
 
 	if(!getorganslot(ORGAN_SLOT_BREATHING_TUBE))
-		if(health <= HEALTH_THRESHOLD_FULLCRIT || (pulledby && pulledby.grab_state >= GRAB_KILL))
+		if(health <= HEALTH_THRESHOLD_FULLCRIT || (pulledby && pulledby.grab_state >= GRAB_KILL) || lungs.organ_flags & ORGAN_FAILING)
 			losebreath++  //You can't breath at all when in critical or when being choked, so you're going to miss a breath
 
 		else if(health <= crit_threshold)
@@ -126,7 +144,7 @@
 	if((status_flags & GODMODE))
 		return
 
-	var/lungs = getorganslot(ORGAN_SLOT_LUNGS)
+	var/obj/item/organ/lungs = getorganslot(ORGAN_SLOT_LUNGS)
 	if(!lungs)
 		adjustOxyLoss(2)
 
@@ -613,7 +631,7 @@ GLOBAL_LIST_INIT(ballmer_windows_me_msg, list("Yo man, what if, we like, uh, put
 				to_chat(src, "<span class='warning'>Maybe you should lie down for a bit...</span>")
 
 		if(drunkenness >= 91)
-			adjustBrainLoss(0.4, 60)
+			adjustOrganLoss(ORGAN_SLOT_BRAIN, 0.4, 60)
 			if(prob(20) && !stat)
 				if(SSshuttle.emergency.mode == SHUTTLE_DOCKED && is_station_level(z)) //QoL mainly
 					to_chat(src, "<span class='warning'>You're so tired... but you can't miss that shuttle...</span>")
@@ -647,8 +665,8 @@ GLOBAL_LIST_INIT(ballmer_windows_me_msg, list("Yo man, what if, we like, uh, put
 	if((!dna && !liver) || (NOLIVER in dna.species.species_traits))
 		return
 	if(liver)
-		if(liver.damage >= liver.maxHealth)
-			liver.failing = TRUE
+		if(liver.damage < liver.maxHealth)
+			liver.organ_flags |= ORGAN_FAILING
 			liver_failure()
 	else
 		liver_failure()
@@ -687,13 +705,6 @@ GLOBAL_LIST_INIT(ballmer_windows_me_msg, list("Yo man, what if, we like, uh, put
 		var/datum/brain_trauma/BT = T
 		BT.on_life()
 
-	if(getBrainLoss() >= BRAIN_DAMAGE_DEATH) //rip
-		to_chat(src, "<span class='userdanger'>The last spark of life in your brain fizzles out...<span>")
-		death()
-		var/obj/item/organ/brain/B = getorganslot(ORGAN_SLOT_BRAIN)
-		if(B)
-			B.damaged_brain = TRUE
-
 /////////////////////////////////////
 //MONKEYS WITH TOO MUCH CHOLOESTROL//
 /////////////////////////////////////
@@ -702,7 +713,7 @@ GLOBAL_LIST_INIT(ballmer_windows_me_msg, list("Yo man, what if, we like, uh, put
 	if(!needs_heart())
 		return FALSE
 	var/obj/item/organ/heart/heart = getorganslot(ORGAN_SLOT_HEART)
-	if(!heart || heart.synthetic)
+	if(!heart || (heart.organ_flags & ORGAN_SYNTHETIC))
 		return FALSE
 	return TRUE
 

code/modules/mob/living/damage_procs.dm

@@ -25,8 +25,6 @@
 			adjustCloneLoss(damage * hit_percent)
 		if(STAMINA)
 			adjustStaminaLoss(damage * hit_percent)
-		if(BRAIN)
-			adjustBrainLoss(damage * hit_percent)
 	return 1
 
 /mob/living/proc/apply_damage_type(damage = 0, damagetype = BRUTE) //like apply damage except it always uses the damage procs
@@ -43,8 +41,6 @@
 			return adjustCloneLoss(damage)
 		if(STAMINA)
 			return adjustStaminaLoss(damage)
-		if(BRAIN)
-			return adjustBrainLoss(damage)
 
 /mob/living/proc/get_damage_amount(damagetype = BRUTE)
 	switch(damagetype)
@@ -60,8 +56,6 @@
 			return getCloneLoss()
 		if(STAMINA)
 			return getStaminaLoss()
-		if(BRAIN)
-			return getBrainLoss()
 
 
 /mob/living/proc/apply_damages(brute = 0, burn = 0, tox = 0, oxy = 0, clone = 0, def_zone = null, blocked = FALSE, stamina = 0, brain = 0)
@@ -218,13 +212,13 @@
 		updatehealth()
 	return amount
 
-/mob/living/proc/getBrainLoss()
-	. = 0
-
-/mob/living/proc/adjustBrainLoss(amount, maximum = BRAIN_DAMAGE_DEATH)
+/mob/living/proc/adjustOrganLoss(slot, amount, maximum)
 	return
 
-/mob/living/proc/setBrainLoss(amount)
+/mob/living/proc/setOrganLoss(slot, amount, maximum)
+	return
+
+/mob/living/proc/getOrganLoss(slot)
 	return
 
 /mob/living/proc/getStaminaLoss()

code/modules/mob/living/emote.dm

@@ -255,7 +255,7 @@
 				H.Knockdown(20)
 			else
 				message_param = "<span class='userdanger'>bumps [user.p_their()] head on the ground</span> trying to motion towards %t."
-				H.adjustBrainLoss(5)
+				H.adjustOrganLoss(ORGAN_SLOT_BRAIN, 5)
 	..()
 
 /datum/emote/living/pout

code/modules/mob/living/living.dm

@@ -473,7 +473,6 @@
 	setToxLoss(0, 0) //zero as second argument not automatically call updatehealth().
 	setOxyLoss(0, 0)
 	setCloneLoss(0, 0)
-	setBrainLoss(0)
 	setStaminaLoss(0, 0)
 	SetUnconscious(0, FALSE)
 	set_disgust(0)
@@ -500,6 +499,11 @@
 		QDEL_LIST_ASSOC_VAL(mood.mood_events)
 		mood.sanity = SANITY_GREAT
 		mood.update_mood()
+	//Heal all organs
+	if(internal_organs)
+		for(var/organ in internal_organs)
+			var/obj/item/organ/O = organ
+			O.setOrganDamage(0)
 
 
 //proc called by revive(), to check if we can actually ressuscitate the mob (we don't want to revive him and have him instantly die again)

code/modules/mob/living/silicon/damage_procs.dm

@@ -35,8 +35,8 @@
 /mob/living/silicon/setStaminaLoss(amount, updating_stamina = 1)
 	return FALSE
 
-/mob/living/silicon/adjustBrainLoss(amount)
+/mob/living/silicon/adjustOrganLoss(slot, amount, maximum = 500)
 	return FALSE
 
-/mob/living/silicon/setBrainLoss(amount)
+/mob/living/silicon/setOrganLoss(slot, amount)
 	return FALSE

code/modules/mob/living/silicon/pai/pai_defense.dm

@@ -84,7 +84,7 @@
 /mob/living/silicon/pai/adjustStaminaLoss(amount)
 	take_holo_damage(amount & 0.25)
 
-/mob/living/silicon/pai/adjustBrainLoss(amount)
+/mob/living/silicon/pai/adjustOrganLoss(slot, amount, maximum = 500) //I kept this in, unlike tg
 	Knockdown(amount * 0.2)
 
 /mob/living/silicon/pai/getBruteLoss()
@@ -102,18 +102,12 @@
 /mob/living/silicon/pai/getCloneLoss()
 	return FALSE
 
-/mob/living/silicon/pai/getBrainLoss()
-	return FALSE
-
 /mob/living/silicon/pai/getStaminaLoss()
 	return FALSE
 
 /mob/living/silicon/pai/setCloneLoss()
 	return FALSE
 
-/mob/living/silicon/pai/setBrainLoss()
-	return FALSE
-
 /mob/living/silicon/pai/setStaminaLoss()
 	return FALSE
 

code/modules/mob/transform_procs.dm

@@ -75,7 +75,7 @@
 		O.setOxyLoss(getOxyLoss(), 0)
 		O.setCloneLoss(getCloneLoss(), 0)
 		O.adjustFireLoss(getFireLoss(), 0)
-		O.setBrainLoss(getBrainLoss(), 0)
+		O.setBrainLoss(getOrganLoss(ORGAN_SLOT_BRAIN), 0)
 		O.adjustStaminaLoss(getStaminaLoss(), 0)//CIT CHANGE - makes monkey transformations inherit stamina
 		O.updatehealth()
 		O.radiation = radiation
@@ -236,7 +236,7 @@
 		O.setOxyLoss(getOxyLoss(), 0)
 		O.setCloneLoss(getCloneLoss(), 0)
 		O.adjustFireLoss(getFireLoss(), 0)
-		O.setBrainLoss(getBrainLoss(), 0)
+		O.setBrainLoss(getOrganLoss(ORGAN_SLOT_BRAIN), 0)
 		O.adjustStaminaLoss(getStaminaLoss(), 0)//CIT CHANGE - makes monkey transformations inherit stamina
 		O.updatehealth()
 		O.radiation = radiation