diff --git a/code/__DEFINES/flags.dm b/code/__DEFINES/flags.dm
index aaf98516fa8..08b75f3857d 100644
--- a/code/__DEFINES/flags.dm
+++ b/code/__DEFINES/flags.dm
@@ -39,11 +39,10 @@
 #define IS_PLANT 		128
 #define CAN_BE_FAT 		256
 #define NO_INTORGANS	512
-#define NO_POISON		1024
-#define RADIMMUNE		2048
-#define ALL_RPARTS		4096
-#define NOGUNS			8192
-#define NOTRANSSTING	16384
+#define RADIMMUNE		1024
+#define ALL_RPARTS		2048
+#define NOGUNS			4096
+#define NOTRANSSTING	8192
 
 //Species clothing flags
 #define HAS_UNDERWEAR 	1
diff --git a/code/game/gamemodes/shadowling/shadowling.dm b/code/game/gamemodes/shadowling/shadowling.dm
index 8e8957d55af..9a38af1abd3 100644
--- a/code/game/gamemodes/shadowling/shadowling.dm
+++ b/code/game/gamemodes/shadowling/shadowling.dm
@@ -304,6 +304,7 @@ Made by Xhuis
 
 	flags = NO_BLOOD | NO_BREATHE | RADIMMUNE | NOGUNS //Can't use guns due to muzzle flash
 	burn_mod = 1.5 //1.5x burn damage, 2x is excessive
+	oxy_mod = 0
 	hot_env_multiplier = 1.5
 
 	silent_steps = 1
@@ -341,6 +342,7 @@ Made by Xhuis
 
 	flags = NO_BLOOD | NO_BREATHE | RADIMMUNE
 	burn_mod = 1.1
+	oxy_mod = 0
 	hot_env_multiplier = 1.1
 
 /datum/species/shadow/ling/lesser/handle_life(var/mob/living/carbon/human/H)
diff --git a/code/modules/mob/living/carbon/brain/brain_item.dm b/code/modules/mob/living/carbon/brain/brain_item.dm
index e3ffe2074a7..064605001dd 100644
--- a/code/modules/mob/living/carbon/brain/brain_item.dm
+++ b/code/modules/mob/living/carbon/brain/brain_item.dm
@@ -116,12 +116,6 @@
 	mmi_icon_state = "slime_mmi"
 //	parent_organ = "chest" Hello I am from the ministry of rubber forehead aliens how are you
 
-/obj/item/organ/internal/brain/slime/take_damage(var/amount, var/silent = 1)
-	//Slimes are 150% more vulnerable to brain damage
-	damage = between(0, src.damage + (1.5*amount), max_damage) //Since they take the damage twice, this is +150%
-	return ..()
-
-
 /obj/item/organ/internal/brain/golem
 	name = "Runic mind"
 	desc = "A tightly furled roll of paper, covered with indecipherable runes."
diff --git a/code/modules/mob/living/carbon/carbon.dm b/code/modules/mob/living/carbon/carbon.dm
index 6942617a10a..827f0ded62e 100644
--- a/code/modules/mob/living/carbon/carbon.dm
+++ b/code/modules/mob/living/carbon/carbon.dm
@@ -35,9 +35,9 @@
 	. = ..()
 	if(.)
 		if(nutrition && stat != DEAD)
-			nutrition -= HUNGER_FACTOR/10
+			nutrition -= hunger_drain / 10
 			if(m_intent == "run")
-				nutrition -= HUNGER_FACTOR/10
+				nutrition -= hunger_drain / 10
 		if((FAT in mutations) && m_intent == "run" && bodytemperature <= 360)
 			bodytemperature += 2
 
@@ -942,7 +942,7 @@ var/list/ventcrawl_machinery = list(/obj/machinery/atmospherics/unary/vent_pump,
 	var/fullness = nutrition + 10
 	if(istype(toEat, /obj/item/weapon/reagent_containers/food/snacks))
 		for(var/datum/reagent/consumable/C in reagents.reagent_list) //we add the nutrition value of what we're currently digesting
-			fullness += C.nutriment_factor * C.volume / C.metabolization_rate
+			fullness += C.nutriment_factor * C.volume / (C.metabolization_rate * metabolism_efficiency * digestion_ratio)
 	if(user == src)
 		if(istype(toEat, /obj/item/weapon/reagent_containers/food/drinks))
 			if(!selfDrink(toEat))
diff --git a/code/modules/mob/living/carbon/human/human.dm b/code/modules/mob/living/carbon/human/human.dm
index b429c34f734..ae88df869d9 100644
--- a/code/modules/mob/living/carbon/human/human.dm
+++ b/code/modules/mob/living/carbon/human/human.dm
@@ -1539,6 +1539,9 @@
 	else
 		see_invisible = SEE_INVISIBLE_LIVING
 
+	hunger_drain = species.hunger_drain
+	digestion_ratio = species.digestion_ratio
+
 	if(species.base_color && default_colour)
 		//Apply colour.
 		r_skin = color2R(species.base_color)
diff --git a/code/modules/mob/living/carbon/human/human_damage.dm b/code/modules/mob/living/carbon/human/human_damage.dm
index 0e2e95bc778..4cf009ec44f 100644
--- a/code/modules/mob/living/carbon/human/human_damage.dm
+++ b/code/modules/mob/living/carbon/human/human_damage.dm
@@ -28,13 +28,15 @@
 	med_hud_set_status()
 	handle_hud_icons()
 
-/mob/living/carbon/human/adjustBrainLoss(var/amount)
+/mob/living/carbon/human/adjustBrainLoss(amount)
 	if(status_flags & GODMODE)
 		return 0	//godmode
 
 	if(species && species.has_organ["brain"])
 		var/obj/item/organ/internal/brain/sponge = get_int_organ(/obj/item/organ/internal/brain)
 		if(sponge)
+			if(species)
+				amount = amount * species.brain_mod
 			sponge.take_damage(amount, 1)
 			brainloss = sponge.damage
 		else
@@ -42,14 +44,16 @@
 	else
 		brainloss = 0
 
-/mob/living/carbon/human/setBrainLoss(var/amount)
+/mob/living/carbon/human/setBrainLoss(amount)
 	if(status_flags & GODMODE)
 		return 0	//godmode
 
 	if(species && species.has_organ["brain"])
 		var/obj/item/organ/internal/brain/sponge = get_int_organ(/obj/item/organ/internal/brain)
 		if(sponge)
-			sponge.damage = min(max(amount, 0),(maxHealth*2))
+			if(species)
+				amount = amount * species.brain_mod
+			sponge.damage = min(max(amount, 0), (maxHealth*2))
 			brainloss = sponge.damage
 		else
 			brainloss = 200
@@ -84,25 +88,25 @@
 	return amount
 
 
-/mob/living/carbon/human/adjustBruteLoss(var/amount)
-	if(species && species.brute_mod)
-		amount = amount*species.brute_mod
+/mob/living/carbon/human/adjustBruteLoss(amount)
+	if(species)
+		amount = amount * species.brute_mod
 	if(amount > 0)
 		take_overall_damage(amount, 0)
 	else
 		heal_overall_damage(-amount, 0)
 
-/mob/living/carbon/human/adjustFireLoss(var/amount)
-	if(species && species.burn_mod)
-		amount = amount*species.burn_mod
+/mob/living/carbon/human/adjustFireLoss(amount)
+	if(species)
+		amount = amount * species.burn_mod
 	if(amount > 0)
 		take_overall_damage(0, amount)
 	else
 		heal_overall_damage(0, -amount)
 
-/mob/living/carbon/human/proc/adjustBruteLossByPart(var/amount, var/organ_name, var/obj/damage_source = null)
-	if(species && species.brute_mod)
-		amount = amount*species.brute_mod
+/mob/living/carbon/human/proc/adjustBruteLossByPart(amount, organ_name, obj/damage_source = null)
+	if(species)
+		amount = amount * species.brute_mod
 
 	if(organ_name in organs_by_name)
 		var/obj/item/organ/external/O = get_organ(organ_name)
@@ -114,9 +118,9 @@
 			O.heal_damage(-amount, 0, internal=0, robo_repair=(O.status & ORGAN_ROBOT))
 
 
-/mob/living/carbon/human/proc/adjustFireLossByPart(var/amount, var/organ_name, var/obj/damage_source = null)
-	if(species && species.burn_mod)
-		amount = amount*species.burn_mod
+/mob/living/carbon/human/proc/adjustFireLossByPart(amount, organ_name, obj/damage_source = null)
+	if(species)
+		amount = amount * species.burn_mod
 
 	if(organ_name in organs_by_name)
 		var/obj/item/organ/external/O = get_organ(organ_name)
@@ -134,13 +138,11 @@
 		wearing_rig.notify_ai("<span class='danger'>Warning: user consciousness failure. Mobility control passed to integrated intelligence system.</span>")
 	..()
 
-/mob/living/carbon/human/adjustCloneLoss(var/amount)
+/mob/living/carbon/human/adjustCloneLoss(amount)
+	if(species)
+		amount = amount * species.clone_mod
 	..()
 
-	if(species.flags & (NO_DNA))
-		cloneloss = 0
-		return
-
 	var/heal_prob = max(0, 80 - getCloneLoss())
 	var/mut_prob = min(80, getCloneLoss() + 10)
 	if(amount > 0) //cloneloss is being added
@@ -176,44 +178,30 @@
 
 
 // Defined here solely to take species flags into account without having to recast at mob/living level.
-/mob/living/carbon/human/getOxyLoss()
-	if(species.flags & NO_BREATHE)
-		oxyloss = 0
-	return ..()
+/mob/living/carbon/human/adjustOxyLoss(amount)
+	if(species)
+		amount = amount * species.oxy_mod
+	..()
 
-/mob/living/carbon/human/adjustOxyLoss(var/amount)
-	if(species.flags & NO_BREATHE)
-		oxyloss = 0
-	else
-		..()
+/mob/living/carbon/human/setOxyLoss(amount)
+	if(species)
+		amount = amount * species.oxy_mod
+	..()
 
-/mob/living/carbon/human/setOxyLoss(var/amount)
-	if(species.flags & NO_BREATHE)
-		oxyloss = 0 //this literally overrides three procs, excessive much?
-	else
-		..()
+/mob/living/carbon/human/adjustToxLoss(amount)
+	if(species)
+		amount = amount * species.tox_mod
+	..()
 
-/mob/living/carbon/human/getToxLoss()
-	if(species.flags & NO_POISON)
-		toxloss = 0
-	return ..()
-
-/mob/living/carbon/human/adjustToxLoss(var/amount)
-	if(species.flags & NO_POISON)
-		toxloss = 0
-	else
-		..()
-
-/mob/living/carbon/human/setToxLoss(var/amount)
-	if(species.flags & NO_POISON)
-		toxloss = 0 //this *also* overrides three procs, definately excessive
-	else
-		..()
+/mob/living/carbon/human/setToxLoss(amount)
+	if(species)
+		amount = amount * species.tox_mod
+	..()
 
 ////////////////////////////////////////////
 
 //Returns a list of damaged organs
-/mob/living/carbon/human/proc/get_damaged_organs(var/brute, var/burn, var/flags = AFFECT_ALL_ORGANS)
+/mob/living/carbon/human/proc/get_damaged_organs(brute, burn, flags = AFFECT_ALL_ORGANS)
 	var/list/obj/item/organ/external/parts = list()
 	for(var/obj/item/organ/external/O in organs)
 		if((brute && O.brute_dam) || (burn && O.burn_dam))
@@ -235,7 +223,7 @@
 //Heals ONE external organ, organ gets randomly selected from damaged ones.
 //It automatically updates damage overlays if necesary
 //It automatically updates health status
-/mob/living/carbon/human/heal_organ_damage(var/brute, var/burn)
+/mob/living/carbon/human/heal_organ_damage(brute, burn)
 	var/list/obj/item/organ/external/parts = get_damaged_organs(brute,burn)
 	if(!parts.len)
 		return
@@ -247,7 +235,7 @@
 //Damages ONE external organ, organ gets randomly selected from damagable ones.
 //It automatically updates damage overlays if necesary
 //It automatically updates health status
-/mob/living/carbon/human/take_organ_damage(var/brute, var/burn, var/sharp = 0, var/edge = 0)
+/mob/living/carbon/human/take_organ_damage(brute, burn, sharp = 0, edge = 0)
 	var/list/obj/item/organ/external/parts = get_damageable_organs()
 	if(!parts.len)
 		return
@@ -259,7 +247,7 @@
 
 
 //Heal MANY external organs, in random order
-/mob/living/carbon/human/heal_overall_damage(var/brute, var/burn, var/internal=0, var/robotic=0)
+/mob/living/carbon/human/heal_overall_damage(brute, burn, internal=0, robotic=0)
 	var/list/obj/item/organ/external/parts = get_damaged_organs(brute,burn)
 
 	var/update = 0
@@ -282,7 +270,7 @@
 		UpdateDamageIcon()
 
 // damage MANY external organs, in random order
-/mob/living/carbon/human/take_overall_damage(var/brute, var/burn, var/sharp = 0, var/edge = 0, var/used_weapon = null)
+/mob/living/carbon/human/take_overall_damage(brute, burn, sharp = 0, edge = 0, used_weapon = null)
 	if(status_flags & GODMODE)
 		return	//godmode
 	var/list/obj/item/organ/external/parts = get_damageable_organs()
@@ -337,7 +325,7 @@ This function restores all organs.
 		return 0
 
 
-/mob/living/carbon/human/proc/get_organ(var/zone)
+/mob/living/carbon/human/proc/get_organ(zone)
 	if(!zone)
 		zone = "chest"
 	if(zone in list("eyes", "mouth"))
@@ -345,7 +333,7 @@ This function restores all organs.
 
 	return organs_by_name[zone]
 
-/mob/living/carbon/human/apply_damage(var/damage = 0, var/damagetype = BRUTE, var/def_zone = null, var/blocked = 0, var/sharp = 0, var/edge = 0, var/obj/used_weapon = null)
+/mob/living/carbon/human/apply_damage(damage = 0, damagetype = BRUTE, def_zone = null, blocked = 0, sharp = 0, edge = 0, obj/used_weapon = null)
 	//Handle other types of damage
 	if((damagetype != BRUTE) && (damagetype != BURN))
 		..(damage, damagetype, def_zone, blocked)
@@ -373,7 +361,7 @@ This function restores all organs.
 	switch(damagetype)
 		if(BRUTE)
 			damageoverlaytemp = 20
-			if(species && species.brute_mod)
+			if(species)
 				damage = damage * species.brute_mod
 
 			if(organ.take_damage(damage, 0, sharp, edge, used_weapon))
@@ -398,7 +386,7 @@ This function restores all organs.
 		if(BURN)
 			damageoverlaytemp = 20
 
-			if(species && species.burn_mod)
+			if(species)
 				damage = damage * species.burn_mod
 
 			if(organ.take_damage(0, damage, sharp, edge, used_weapon))
@@ -406,4 +394,4 @@ This function restores all organs.
 
 	// Will set our damageoverlay icon to the next level, which will then be set back to the normal level the next mob.Life().
 	updatehealth()
-	return 1
+	return 1
\ 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 0be4298dadc..8448c786302 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -675,14 +675,14 @@
 	// nutrition decrease
 	if(nutrition > 0 && stat != DEAD)
 		// THEY HUNGER
-		var/hunger_rate = HUNGER_FACTOR
+		var/hunger_rate = hunger_drain
 		if(satiety > 0)
 			satiety--
 		if(satiety < 0)
 			satiety++
 			if(prob(round(-satiety/40)))
 				Jitter(5)
-			hunger_rate = 3 * HUNGER_FACTOR
+			hunger_rate = 3 * hunger_drain
 		nutrition = max(0, nutrition - hunger_rate)
 
 	if(nutrition > NUTRITION_LEVEL_FULL)
diff --git a/code/modules/mob/living/carbon/human/species/abductor.dm b/code/modules/mob/living/carbon/human/species/abductor.dm
index bb1f3dd2067..3bcade9f00d 100644
--- a/code/modules/mob/living/carbon/human/species/abductor.dm
+++ b/code/modules/mob/living/carbon/human/species/abductor.dm
@@ -11,6 +11,9 @@
 	eyes = "blank_eyes"
 
 	flags = HAS_LIPS | NO_BLOOD | NO_BREATHE
+
+	oxy_mod = 0
+
 	virus_immune = 1
 	clothing_flags = HAS_UNDERWEAR | HAS_UNDERSHIRT | HAS_SOCKS
 	dietflags = DIET_OMNI
diff --git a/code/modules/mob/living/carbon/human/species/apollo.dm b/code/modules/mob/living/carbon/human/species/apollo.dm
index 5642eedbcbe..faeecdfcc5f 100644
--- a/code/modules/mob/living/carbon/human/species/apollo.dm
+++ b/code/modules/mob/living/carbon/human/species/apollo.dm
@@ -37,10 +37,12 @@
 		"antennae" =    /obj/item/organ/internal/wryn/hivenode
 		)
 
-	flags = IS_WHITELISTED | HAS_LIPS | NO_BREATHE | HAS_SKIN_COLOR | NO_SCAN | NO_SCAN | HIVEMIND
+	flags = IS_WHITELISTED | HAS_LIPS | NO_BREATHE | HAS_SKIN_COLOR | NO_SCAN | HIVEMIND
 	clothing_flags = HAS_UNDERWEAR | HAS_UNDERSHIRT | HAS_SOCKS
 	dietflags = DIET_HERB		//bees feed off nectar, so bee people feed off plants too
 
+	oxy_mod = 0
+
 	reagent_tag = PROCESS_ORG
 	base_color = "#704300"
 	flesh_color = "#704300"
@@ -97,6 +99,7 @@
 	language = "Sol Common"
 	burn_mod = 4 // holy shite, poor guys wont survive half a second cooking smores
 	brute_mod = 2 // damn, double wham, double dam
+	oxy_mod = 0
 	flags = IS_WHITELISTED | NO_BREATHE | NO_BLOOD | NO_PAIN | HAS_LIPS | NO_SCAN
 	dietflags = DIET_OMNI		//still human at their core, so they maintain their eating habits and diet
 
diff --git a/code/modules/mob/living/carbon/human/species/golem.dm b/code/modules/mob/living/carbon/human/species/golem.dm
index 1e255ea50cc..1bb4ba8e214 100644
--- a/code/modules/mob/living/carbon/human/species/golem.dm
+++ b/code/modules/mob/living/carbon/human/species/golem.dm
@@ -7,6 +7,9 @@
 
 	default_language = "Galactic Common"
 	flags = NO_BREATHE | NO_BLOOD | RADIMMUNE | NOGUNS
+
+	oxy_mod = 0
+
 	virus_immune = 1
 	dietflags = DIET_OMNI		//golems can eat anything because they are magic or something
 	reagent_tag = PROCESS_ORG
diff --git a/code/modules/mob/living/carbon/human/species/shadow.dm b/code/modules/mob/living/carbon/human/species/shadow.dm
index fa7dadfebcb..ca26348d188 100644
--- a/code/modules/mob/living/carbon/human/species/shadow.dm
+++ b/code/modules/mob/living/carbon/human/species/shadow.dm
@@ -16,6 +16,9 @@
 		)
 
 	flags = NO_BLOOD | NO_BREATHE | RADIMMUNE
+
+	oxy_mod = 0
+
 	virus_immune = 1
 	dietflags = DIET_OMNI		//the mutation process allowed you to now digest all foods regardless of initial race
 	reagent_tag = PROCESS_ORG
diff --git a/code/modules/mob/living/carbon/human/species/skeleton.dm b/code/modules/mob/living/carbon/human/species/skeleton.dm
index 7a4f1bae4eb..4a3b087e93d 100644
--- a/code/modules/mob/living/carbon/human/species/skeleton.dm
+++ b/code/modules/mob/living/carbon/human/species/skeleton.dm
@@ -14,6 +14,9 @@
 	flesh_color = "#E6E6C6"
 
 	flags = NO_BREATHE | NO_BLOOD | RADIMMUNE
+
+	oxy_mod = 0
+
 	virus_immune = 1 //why is this a var and not a flag?
 	dietflags = DIET_OMNI
 	reagent_tag = PROCESS_ORG
diff --git a/code/modules/mob/living/carbon/human/species/species.dm b/code/modules/mob/living/carbon/human/species/species.dm
index e4b513cdc4a..e2238057533 100644
--- a/code/modules/mob/living/carbon/human/species/species.dm
+++ b/code/modules/mob/living/carbon/human/species/species.dm
@@ -43,6 +43,8 @@
 
 	var/body_temperature = 310.15	//non-IS_SYNTHETIC species will try to stabilize at this temperature. (also affects temperature processing)
 	var/reagent_tag                 //Used for metabolizing reagents.
+	var/hunger_drain = HUNGER_FACTOR
+	var/digestion_ratio = 1 //How quickly the species digests/absorbs reagents.
 
 	var/siemens_coeff = 1 //base electrocution coefficient
 
@@ -66,8 +68,13 @@
 		"sa_sleep" = 5
 		)
 
-	var/brute_mod = null    // Physical damage reduction/malus.
-	var/burn_mod = null     // Burn damage reduction/malus.
+	var/brute_mod = 1    // Physical damage reduction/amplification
+	var/burn_mod = 1     // Burn damage reduction/amplification
+	var/tox_mod = 1      // Toxin damage reduction/amplification
+	var/oxy_mod = 1		 // Oxy damage reduction/amplification
+	var/clone_mod = 1	 // Clone damage reduction/amplification
+	var/brain_mod = 1    // Brain damage damage reduction/amplification
+	var/stun_mod = 1	 // If a species is more/less impacated by stuns/weakens/paralysis
 
 	var/total_health = 100
 	var/punchdamagelow = 0       //lowest possible punch damage
@@ -657,4 +664,4 @@ It'll return null if the organ doesn't correspond, so include null checks when u
 		H.see_invisible = SEE_INVISIBLE_MINIMUM
 
 	if(H.see_override)	//Override all
-		H.see_invisible = H.see_override
+		H.see_invisible = H.see_override
\ No newline at end of file
diff --git a/code/modules/mob/living/carbon/human/species/station.dm b/code/modules/mob/living/carbon/human/species/station.dm
index 32e246254b6..5bde6ce8e5b 100644
--- a/code/modules/mob/living/carbon/human/species/station.dm
+++ b/code/modules/mob/living/carbon/human/species/station.dm
@@ -506,6 +506,9 @@
 	cold_level_3 = 200
 	cold_env_multiplier = 3
 
+	oxy_mod = 0
+	brain_mod = 2.5
+
 	flags = IS_WHITELISTED | NO_BREATHE | HAS_LIPS | NO_INTORGANS | NO_SCAN
 	clothing_flags = HAS_UNDERWEAR | HAS_UNDERSHIRT | HAS_SOCKS
 	bodyflags = HAS_SKIN_COLOR | NO_EYES
@@ -756,6 +759,8 @@
 	clothing_flags = HAS_SOCKS
 	dietflags = 0		//Diona regenerate nutrition in light, no diet necessary
 
+	oxy_mod = 0
+
 	body_temperature = T0C + 15		//make the plant people have a bit lower body temperature, why not
 	blood_color = "#004400"
 	flesh_color = "#907E4A"
@@ -850,9 +855,12 @@
 	eyes = "blank_eyes"
 	brute_mod = 2.5 // 100% * 2.5 * 0.6 (robolimbs) ~= 150%
 	burn_mod = 2.5  // So they take 50% extra damage from brute/burn overall.
+	tox_mod = 0
+	clone_mod = 0
+	oxy_mod = 0
 	death_message = "gives one shrill beep before falling limp, their monitor flashing blue before completely shutting off..."
 
-	flags = IS_WHITELISTED | NO_BREATHE | NO_SCAN | NO_BLOOD | NO_PAIN | NO_DNA | NO_POISON | RADIMMUNE | ALL_RPARTS | NOTRANSSTING
+	flags = IS_WHITELISTED | NO_BREATHE | NO_SCAN | NO_BLOOD | NO_PAIN | NO_DNA | RADIMMUNE | ALL_RPARTS| NOTRANSSTING
 	clothing_flags = HAS_UNDERWEAR | HAS_UNDERSHIRT | HAS_SOCKS
 	bodyflags = HAS_SKIN_COLOR | HAS_HEAD_MARKINGS | HAS_HEAD_ACCESSORY
 	dietflags = 0		//IPCs can't eat, so no diet
@@ -1007,4 +1015,4 @@
 				H.apply_damage(hot_env_multiplier*HEAT_GAS_DAMAGE_LEVEL_2, BURN, "head", used_weapon = "Excessive Heat")
 
 			if(heat_level_3_breathe to INFINITY)
-				H.apply_damage(hot_env_multiplier*HEAT_GAS_DAMAGE_LEVEL_3, BURN, "head", used_weapon = "Excessive Heat")
+				H.apply_damage(hot_env_multiplier*HEAT_GAS_DAMAGE_LEVEL_3, BURN, "head", used_weapon = "Excessive Heat")
\ No newline at end of file
diff --git a/code/modules/mob/living/carbon/human/status_procs.dm b/code/modules/mob/living/carbon/human/status_procs.dm
new file mode 100644
index 00000000000..5ca23f89f4f
--- /dev/null
+++ b/code/modules/mob/living/carbon/human/status_procs.dm
@@ -0,0 +1,19 @@
+/mob/living/carbon/human/SetStunned(amount, updating = 1, force = 0)
+	if(species)
+		amount = amount * species.stun_mod
+	..()
+
+/mob/living/carbon/human/SetWeakened(amount, updating = 1, force = 0)
+	if(species)
+		amount = amount * species.stun_mod
+	..()
+
+/mob/living/carbon/human/SetParalysis(amount, updating = 1, force = 0)
+	if(species)
+		amount = amount * species.stun_mod
+	..()
+
+/mob/living/carbon/human/SetSleeping(amount, updating = 1)
+	if(species)
+		amount = amount * species.stun_mod
+	..()
\ No newline at end of file
diff --git a/code/modules/mob/living/living_defines.dm b/code/modules/mob/living/living_defines.dm
index 3d4638f43ce..0ec5f16c787 100644
--- a/code/modules/mob/living/living_defines.dm
+++ b/code/modules/mob/living/living_defines.dm
@@ -33,6 +33,7 @@
 	var/floating = 0
 	var/mob_size = MOB_SIZE_HUMAN
 	var/metabolism_efficiency = 1 //more or less efficiency to metabolize helpful/harmful reagents and regulate body temperature..
+	var/digestion_ratio = 1 //controls how quickly reagents metabolize; largely governered by species attributes.
 	var/nightvision = 0
 
 	var/bloodcrawl = 0 //0 No blood crawling, 1 blood crawling, 2 blood crawling+mob devour
diff --git a/code/modules/mob/living/simple_animal/hostile/terror_spiders/terror_spiders.dm b/code/modules/mob/living/simple_animal/hostile/terror_spiders/terror_spiders.dm
index 67683d39b39..7adcc187109 100644
--- a/code/modules/mob/living/simple_animal/hostile/terror_spiders/terror_spiders.dm
+++ b/code/modules/mob/living/simple_animal/hostile/terror_spiders/terror_spiders.dm
@@ -158,7 +158,7 @@ var/global/list/ts_spiderlist = list()
 			var/can_poison = 1
 			if(ishuman(G))
 				var/mob/living/carbon/human/H = G
-				if(!(H.species.reagent_tag & PROCESS_ORG) || (H.species.flags & NO_POISON))
+				if(!(H.species.reagent_tag & PROCESS_ORG) || (!H.species.tox_mod))
 					can_poison = 0
 			spider_specialattack(G,can_poison)
 		else
diff --git a/code/modules/mob/mob_defines.dm b/code/modules/mob/mob_defines.dm
index 1d6a7eb43fe..d783520b3f6 100644
--- a/code/modules/mob/mob_defines.dm
+++ b/code/modules/mob/mob_defines.dm
@@ -69,6 +69,7 @@
 	var/charges = 0.0
 	var/nutrition = NUTRITION_LEVEL_FED + 50 //Carbon
 	var/satiety = 0 //Carbon
+	var/hunger_drain = HUNGER_FACTOR // how quickly the mob gets hungry; largely utilized by species.
 
 	var/overeatduration = 0		// How long this guy is overeating //Carbon
 	var/intent = null//Living
diff --git a/code/modules/reagents/chemistry/reagents.dm b/code/modules/reagents/chemistry/reagents.dm
index 1e043d88b7c..0f6e202ba07 100644
--- a/code/modules/reagents/chemistry/reagents.dm
+++ b/code/modules/reagents/chemistry/reagents.dm
@@ -73,7 +73,7 @@
 
 /datum/reagent/proc/on_mob_life(mob/living/M)
 	current_cycle++
-	holder.remove_reagent(id, metabolization_rate * M.metabolism_efficiency) //By default it slowly disappears.
+	holder.remove_reagent(id, metabolization_rate * M.metabolism_efficiency * M.digestion_ratio) //By default it slowly disappears.
 
 /datum/reagent/proc/on_mob_death(mob/living/M)	//use this to have chems have a "death-triggered" effect
 	return
diff --git a/code/modules/reagents/chemistry/reagents/medicine.dm b/code/modules/reagents/chemistry/reagents/medicine.dm
index de539ef52ba..fc966c7fba3 100644
--- a/code/modules/reagents/chemistry/reagents/medicine.dm
+++ b/code/modules/reagents/chemistry/reagents/medicine.dm
@@ -4,7 +4,7 @@
 
 /datum/reagent/medicine/on_mob_life(mob/living/M)
 	current_cycle++
-	holder.remove_reagent(id, metabolization_rate / M.metabolism_efficiency) //medicine reagents stay longer if you have a better metabolism
+	holder.remove_reagent(id, (metabolization_rate / M.metabolism_efficiency) * M.digestion_ratio) //medicine reagents stay longer if you have a better metabolism
 
 /datum/reagent/medicine/hydrocodone
 	name = "Hydrocodone"
diff --git a/paradise.dme b/paradise.dme
index 8d0b4576bf8..93d922f35fc 100644
--- a/paradise.dme
+++ b/paradise.dme
@@ -1539,6 +1539,7 @@
 #include "code\modules\mob\living\carbon\human\login.dm"
 #include "code\modules\mob\living\carbon\human\npcs.dm"
 #include "code\modules\mob\living\carbon\human\say.dm"
+#include "code\modules\mob\living\carbon\human\status_procs.dm"
 #include "code\modules\mob\living\carbon\human\update_icons.dm"
 #include "code\modules\mob\living\carbon\human\whisper.dm"
 #include "code\modules\mob\living\carbon\human\interactive\functions.dm"
@@ -1608,8 +1609,8 @@
 #include "code\modules\mob\living\silicon\robot\robot.dm"
 #include "code\modules\mob\living\silicon\robot\robot_damage.dm"
 #include "code\modules\mob\living\silicon\robot\robot_items.dm"
-#include "code\modules\mob\living\silicon\robot\robot_modules.dm"
 #include "code\modules\mob\living\silicon\robot\robot_module_actions.dm"
+#include "code\modules\mob\living\silicon\robot\robot_modules.dm"
 #include "code\modules\mob\living\silicon\robot\robot_movement.dm"
 #include "code\modules\mob\living\silicon\robot\update_status.dm"
 #include "code\modules\mob\living\silicon\robot\drone\drone.dm"