Removes limits on eating, centralizes nutrition changing.

code/__defines/mobs.dm

@@ -426,4 +426,6 @@
 #define EXAMINE_SKIPARMS			0x0020
 #define EXAMINE_SKIPHANDS			0x0040
 #define EXAMINE_SKIPLEGS			0x0080
-#define EXAMINE_SKIPFEET			0x0100
+#define EXAMINE_SKIPFEET			0x0100
+
+#define MAX_NUTRITION	500

code/game/gamemodes/changeling/powers/absorb.dm

@@ -3,11 +3,11 @@
 	desc = "Permits us to syphon the DNA from a human. They become one with us, and we become stronger if they were of our kind."
 	ability_icon_state = "ling_absorb_dna"
 	genomecost = 0
-	verbpath = /mob/proc/changeling_absorb_dna
+	verbpath = /mob/living/proc/changeling_absorb_dna
 
 //Absorbs the victim's DNA. Requires a strong grip on the victim.
 //Doesn't cost anything as it's the most basic ability.
-/mob/proc/changeling_absorb_dna()
+/mob/living/proc/changeling_absorb_dna()
 	set category = "Changeling"
 	set name = "Absorb DNA"
 
@@ -67,8 +67,7 @@
 	to_chat(src, "<span class='notice'>We have absorbed [T]!</span>")
 	src.visible_message("<span class='danger'>[src] sucks the fluids from [T]!</span>")
 	to_chat(T, "<span class='danger'>You have been absorbed by the changeling!</span>")
-	if(src.nutrition < 400)
-		src.nutrition = min((src.nutrition + T.nutrition), 400)
+	adjust_nutrition(T.nutrition)
 	changeling.chem_charges += 10
 	if(changeling.readapts <= 0)
 		changeling.readapts = 0 //SANITYYYYYY

code/game/gamemodes/technomancer/spells/energy_siphon.dm

@@ -83,7 +83,7 @@
 #define SIPHON_CORE_TO_ENERGY	0.5
 
 // This is called every tick, so long as a link exists between the target and the Technomancer.
-/obj/item/weapon/spell/energy_siphon/proc/siphon(atom/movable/siphoning, mob/user)
+/obj/item/weapon/spell/energy_siphon/proc/siphon(atom/movable/siphoning, mob/living/user)
 	var/list/things_to_drain = things_to_siphon // Temporary list copy of what we're gonna steal from.
 	var/charge_to_give = 0 // How much energy to give to the Technomancer at the end.
 	var/flow_remaining = calculate_spell_power(flow_rate)
@@ -141,7 +141,7 @@
 		if( (core.max_energy - core.energy) < charge_to_give ) // We have some overflow, if this is true.
 			if(user.isSynthetic()) // Let's do something with it, if we're a robot.
 				charge_to_give = charge_to_give - (core.max_energy - core.energy)
-				user.nutrition =  min(user.nutrition + (charge_to_give / SIPHON_FBP_TO_ENERGY), 400)
+				user.adjust_nutrition(charge_to_give / SIPHON_FBP_TO_ENERGY)
 				to_chat(user, "<span class='notice'>Redirected energy to internal microcell.</span>")
 	else
 		to_chat(user, "<span class='notice'>Stolen [charge_to_give * CELLRATE] kJ.</span>")

code/game/machinery/computer/arcade.dm

@@ -384,7 +384,7 @@
 	spaceport_freebie = 0
 	last_spaceport_action = ""
 
-/obj/machinery/computer/arcade/orion_trail/attack_hand(mob/user)
+/obj/machinery/computer/arcade/orion_trail/attack_hand(mob/living/user)
 	if(..())
 		return
 	if(fuel <= 0 || food <=0 || settlers.len == 0)

code/game/machinery/rechargestation.dm

@@ -115,8 +115,8 @@
 			H.adjustBrainLoss(-(rand(1,3)))
 
 		// Also recharge their internal battery.
-		if(H.isSynthetic() && H.nutrition < 450)
-			H.nutrition = min(H.nutrition+10, 450)
+		if(H.isSynthetic() && H.nutrition < MAX_NUTRITION)
+			H.nutrition = min(H.nutrition+10, MAX_NUTRITION)
 			cell.use(7000/450*10)
 
 		// And clear up radiation

code/game/objects/items/crayons.dm

@@ -109,7 +109,7 @@
 					qdel(src)
 	return
 
-/obj/item/weapon/pen/crayon/attack(mob/M as mob, mob/user as mob)
+/obj/item/weapon/pen/crayon/attack(mob/living/M as mob, mob/living/user as mob)
 	if(M == user)
 		to_chat(user, "You take a bite of the crayon and swallow it.")
 		user.nutrition += 1
@@ -195,7 +195,7 @@
 	shadeColour = input(user, "Please select the shade colour.", "Marker colour") as color
 	return
 
-/obj/item/weapon/pen/crayon/marker/attack(mob/M as mob, mob/user as mob)
+/obj/item/weapon/pen/crayon/marker/attack(mob/living/M as mob, mob/living/user as mob)
 	if(M == user)
 		to_chat(user, "You take a bite of the marker and swallow it.")
 		user.nutrition += 1

code/game/objects/items/devices/scanners.dm

@@ -486,7 +486,7 @@ HALOGEN COUNTER	- Radcount on mobs
 	for(var/potential_color in S.slime_mutation)
 		var/mob/living/simple_mob/slime/xenobio/slime = potential_color
 		mutations.Add(initial(slime.slime_color))
-	user.show_message("Potental to mutate into [english_list(mutations)] colors.<br>Extract potential: [S.cores]<br>Nutrition: [S.nutrition]/[S.get_max_nutrition()]")
+	user.show_message("Potental to mutate into [english_list(mutations)] colors.<br>Extract potential: [S.cores]<br>Nutrition: [S.nutrition]/[S.max_nutrition]")
 
 	if (S.nutrition < S.get_starve_nutrition())
 		user.show_message("<span class='alert'>Warning: Subject is starving!</span>")

code/modules/food/food/snacks.dm

@@ -43,7 +43,7 @@
 /obj/item/weapon/reagent_containers/food/snacks/attack_self(mob/user as mob)
 	return
 
-/obj/item/weapon/reagent_containers/food/snacks/attack(mob/M as mob, mob/user as mob, def_zone)
+/obj/item/weapon/reagent_containers/food/snacks/attack(mob/living/M as mob, mob/user as mob, def_zone)
 	if(reagents && !reagents.total_volume)
 		to_chat(user, "<span class='danger'>None of [src] left!</span>")
 		user.drop_from_inventory(src)
@@ -78,9 +78,6 @@
 				to_chat(M, "<span class='notice'>You take a bite of [src].</span>")
 			if (fullness > 350 && fullness <= 550)
 				to_chat(M, "<span class='notice'>You unwillingly chew a bit of [src].</span>")
-			if (fullness > (550 * (1 + M.overeatduration / 2000)))	// The more you eat - the more you can eat
-				to_chat(M, "<span class='danger'>You cannot force any more of [src] to go down your throat.</span>")
-				return 0
 
 		else if(user.a_intent == I_HURT)
 			return ..()
@@ -108,11 +105,7 @@
 					to_chat(user, "<span class='warning'>\The [blocked] is in the way!</span>")
 					return
 
-				if (fullness <= (550 * (1 + M.overeatduration / 1000)))
-					user.visible_message("<span class='danger'>[user] attempts to feed [M] [src].</span>")
-				else
-					user.visible_message("<span class='danger'>[user] cannot force anymore of [src] down [M]'s throat.</span>")
-					return 0
+				user.visible_message("<span class='danger'>[user] attempts to feed [M] [src].</span>")
 
 				user.setClickCooldown(user.get_attack_speed(src))
 				if(!do_mob(user, M)) return

code/modules/mob/_modifiers/modifiers_misc.dm

@@ -83,7 +83,7 @@ the artifact triggers the rage.
 
 /datum/modifier/berserk/on_applied()
 	if(ishuman(holder)) // Most other mobs don't really use nutrition and can't get it back.
-		holder.nutrition = max(0, holder.nutrition - nutrition_cost)
+		holder.adjust_nutrition(-nutrition_cost)
 	holder.visible_message("<span class='critical'>\The [holder] descends into an all consuming rage!</span>")
 
 	// End all stuns.

code/modules/mob/_modifiers/unholy.dm

@@ -184,7 +184,7 @@
 		if(ishuman(holder))
 			var/mob/living/carbon/human/H = holder
 			var/starting_nutrition = H.nutrition
-			H.nutrition = max(0, H.nutrition - 10)
+			H.adjust_nutrition(-10)
 			var/healing_amount = starting_nutrition - H.nutrition
 			if(healing_amount < 0) // If you are eating enough to somehow outpace this, congratulations, you are gluttonous enough to gain a boon.
 				healing_amount *= -2

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

@@ -6,16 +6,14 @@
 		var/turf/T = loc
 		light_amount = T.get_lumcount() * 5
 
-	nutrition += light_amount
+	adjust_nutrition(light_amount)
 
-	if(nutrition > 500)
-		nutrition = 500
 	if(light_amount > 2) //if there's enough light, heal
 		adjustBruteLoss(-1)
 		adjustFireLoss(-1)
 		adjustToxLoss(-1)
 		adjustOxyLoss(-1)
-		
-		
+
+
  	if(!client)
- 		handle_npc(src) 
+ 		handle_npc(src)

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

@@ -28,7 +28,7 @@
 
 	var/rads = radiation/25
 	radiation -= rads
-	nutrition += rads
+	adjust_nutrition(rads)
 	heal_overall_damage(rads,rads)
 	adjustOxyLoss(-(rads))
 	adjustToxLoss(-(rads))

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

@@ -37,9 +37,10 @@
 	. = ..()
 	if(.)
 		if(src.nutrition && src.stat != 2)
-			src.nutrition -= DEFAULT_HUNGER_FACTOR/10
+			adjust_nutrition(-DEFAULT_HUNGER_FACTOR / 10)
 			if(src.m_intent == "run")
-				src.nutrition -= DEFAULT_HUNGER_FACTOR/10
+				adjust_nutrition(-DEFAULT_HUNGER_FACTOR / 10)
+
 		if((FAT in src.mutations) && src.m_intent == "run" && src.bodytemperature <= 360)
 			src.bodytemperature += 2
 
@@ -109,7 +110,7 @@
 	src.apply_damage(0.4 * shock_damage, BURN, BP_TORSO, used_weapon="Electrocution") //shock the torso more
 	src.apply_damage(0.2 * shock_damage, BURN, null, used_weapon="Electrocution") //shock a random part!
 	src.apply_damage(0.2 * shock_damage, BURN, null, used_weapon="Electrocution") //shock a random part!
-	
+
 	playsound(loc, "sparks", 50, 1, -1)
 	if (shock_damage > 15)
 		src.visible_message(

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

@@ -27,7 +27,7 @@
 	if(can_feel_pain())
 		if(halloss >= 10) tally += (halloss / 10) //halloss shouldn't slow you down if you can't even feel it
 
-	var/hungry = (500 - nutrition)/5 // So overeat would be 100 and default level would be 80
+	var/hungry = (MAX_NUTRITION - nutrition) / 5
 	if (hungry >= 70) tally += hungry/50
 
 	if(istype(buckled, /obj/structure/bed/chair/wheelchair))

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

@@ -302,7 +302,7 @@
 
 	var/delay_length = round(active_regen_delay * species.active_regen_mult)
 	if(do_after(src,delay_length))
-		nutrition -= 200
+		adjust_nutrition(-200)
 
 		for(var/obj/item/organ/I in internal_organs)
 			if(I.robotic >= ORGAN_ROBOT) // No free robofix.
@@ -345,5 +345,5 @@
 		active_regen = FALSE
 	else
 		to_chat(src, "<span class='critical'>Your regeneration is interrupted!</span>")
-		nutrition -= 75
+		adjust_nutrition(-75)
 		active_regen = FALSE

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

@@ -274,7 +274,7 @@
 		if(rad_organ && !rad_organ.is_broken())
 			var/rads = radiation/25
 			radiation -= rads
-			nutrition += rads
+			adjust_nutrition(rads)
 			adjustBruteLoss(-(rads))
 			adjustFireLoss(-(rads))
 			adjustOxyLoss(-(rads))
@@ -786,7 +786,7 @@
 
 	if(bodytemperature < species.cold_level_1) //260.15 is 310.15 - 50, the temperature where you start to feel effects.
 		if(nutrition >= 2) //If we are very, very cold we'll use up quite a bit of nutriment to heat us up.
-			nutrition -= 2
+			adjust_nutrition(-2)
 		var/recovery_amt = max((body_temperature_difference / BODYTEMP_AUTORECOVERY_DIVISOR), BODYTEMP_AUTORECOVERY_MINIMUM)
 		//to_world("Cold. Difference = [body_temperature_difference]. Recovering [recovery_amt]")
 //				log_debug("Cold. Difference = [body_temperature_difference]. Recovering [recovery_amt]")
@@ -916,15 +916,7 @@
 		for(var/datum/modifier/mod in modifiers)
 			if(!isnull(mod.metabolism_percent))
 				nutrition_reduction *= mod.metabolism_percent
-
-		nutrition = max (0, nutrition - nutrition_reduction)
-
-	if (nutrition > 450)
-		if(overeatduration < 600) //capped so people don't take forever to unfat
-			overeatduration++
-	else
-		if(overeatduration > 1)
-			overeatduration -= 2 //doubled the unfat rate
+		adjust_nutrition(-nutrition_reduction)
 
 	// TODO: stomach and bloodstream organ.
 	if(!isSynthetic())
@@ -1448,7 +1440,7 @@
 				if(air_master.current_cycle%3==1)
 					if(!(M.status_flags & GODMODE))
 						M.adjustBruteLoss(5)
-					nutrition += 10
+					adjust_nutrition(10)
 
 /mob/living/carbon/human/proc/handle_changeling()
 	if(mind && mind.changeling)

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

@@ -180,32 +180,32 @@ var/datum/species/shapeshifter/promethean/prometheans
 		if(!(H.shoes || (H.wear_suit && (H.wear_suit.body_parts_covered & FEET))))
 			for(var/obj/O in T)
 				O.clean_blood()
-				H.nutrition = min(500, max(0, H.nutrition + rand(5, 15)))
+				H.adjust_nutrition(rand(5, 15))
 			if (istype(T, /turf/simulated))
 				var/turf/simulated/S = T
 				T.clean_blood()
 				S.dirt = 0
-				H.nutrition = min(500, max(0, H.nutrition + rand(10, 20)))
+				H.adjust_nutrition(rand(10, 20))
 		if(H.clean_blood(1))
-			H.nutrition = min(500, max(0, H.nutrition + rand(5, 15)))
+			H.adjust_nutrition(rand(5, 15))
 		if(H.r_hand)
 			if(H.r_hand.clean_blood())
-				H.nutrition = min(500, max(0, H.nutrition + rand(5, 15)))
+				H.adjust_nutrition(rand(5, 15))
 		if(H.l_hand)
 			if(H.l_hand.clean_blood())
-				H.nutrition = min(500, max(0, H.nutrition + rand(5, 15)))
+				H.adjust_nutrition(rand(5, 15))
 		if(H.head)
 			if(H.head.clean_blood())
 				H.update_inv_head(0)
-				H.nutrition = min(500, max(0, H.nutrition + rand(5, 15)))
+				H.adjust_nutrition(rand(5, 15))
 		if(H.wear_suit)
 			if(H.wear_suit.clean_blood())
 				H.update_inv_wear_suit(0)
-				H.nutrition = min(500, max(0, H.nutrition + rand(5, 15)))
+				H.adjust_nutrition(rand(5, 15))
 		if(H.w_uniform)
 			if(H.w_uniform.clean_blood())
 				H.update_inv_w_uniform(0)
-				H.nutrition = min(500, max(0, H.nutrition + rand(5, 15)))
+				H.adjust_nutrition(rand(5, 15))
 		//End cleaning code.
 
 		var/datum/gas_mixture/environment = T.return_air()
@@ -288,8 +288,7 @@ var/datum/species/shapeshifter/promethean/prometheans
 				if(ToxReg)
 					strain_negation += to_pay * max(0, (1 - ToxReg.get_strain_percent()))
 
-			H.nutrition -= (3 * nutrition_cost) //Costs Nutrition when damage is being repaired, corresponding to the amount of damage being repaired.
-			H.nutrition = max(0, H.nutrition) //Ensure it's not below 0.
+			H.adjust_nutrition(-(3 * nutrition_cost)) // Costs Nutrition when damage is being repaired, corresponding to the amount of damage being repaired.
 
 			var/agony_to_apply = ((1 / starve_mod) * (nutrition_cost - strain_negation)) //Regenerating damage causes minor pain over time, if the organs responsible are nonexistant or too high on strain. Small injures will be no issue, large ones will cause problems.
 

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

@@ -586,11 +586,9 @@
 		if(isturf(H.loc)) //else, there's considered to be no light
 			var/turf/T = H.loc
 			light_amount = T.get_lumcount() * 10
-		H.nutrition += light_amount
+		H.adjust_nutrition(light_amount)
 		H.shock_stage -= light_amount
 
-		if(H.nutrition > 450)
-			H.nutrition = 450
 		if(light_amount >= 3) //if there's enough light, heal
 			H.adjustBruteLoss(-(round(light_amount/2)))
 			H.adjustFireLoss(-(round(light_amount/2)))

code/modules/mob/living/living.dm

@@ -1039,7 +1039,7 @@ default behaviour is:
 						if(getBruteLoss() < 50)
 							adjustBruteLoss(3)
 					else
-						nutrition -= 40
+						adjust_nutrition(-40)
 						adjustToxLoss(-3)
 
 		spawn(350)
@@ -1302,6 +1302,9 @@ default behaviour is:
 /mob/living/proc/needs_to_breathe()
 	return !isSynthetic()
 
+/mob/living/proc/adjust_nutrition(amount)
+	nutrition = between(0, nutrition + amount, max_nutrition)
+
 /mob/living/vv_get_header()
 	. = ..()
 	. += {"

code/modules/mob/living/living_defines.dm

@@ -18,6 +18,9 @@
 	var/brainloss = 0	//'Retardation' damage caused by someone hitting you in the head with a bible or being infected with brainrot.
 	var/halloss = 0		//Hallucination damage. 'Fake' damage obtained through hallucinating or the holodeck. Sleeping should cause it to wear off.
 
+	var/nutrition = 400
+	var/max_nutrition = MAX_NUTRITION
+
 	var/hallucination = 0 //Directly affects how long a mob will hallucinate for
 	var/list/atom/hallucinations = list() //A list of hallucinated people that try to attack the mob. See /obj/effect/fake_attacker in hallucinations.dm
 

code/modules/mob/living/simple_mob/subtypes/slime/xenobio/consumption.dm

@@ -1,8 +1,7 @@
 // Handles hunger, starvation, growth, and eatting humans.
 
-// Might be best to make this a /mob/living proc and override.
-/mob/living/simple_mob/slime/xenobio/proc/adjust_nutrition(input, var/heal = 1)
-	nutrition = between(0, nutrition + input, get_max_nutrition())
+/mob/living/simple_mob/slime/xenobio/adjust_nutrition(input, var/heal = 1)
+	..(input)
 
 	if(input > 0)
 		// Gain around one level per 50 nutrition.
@@ -19,10 +18,6 @@
 			adjustOxyLoss(-input * 0.2)
 			adjustCloneLoss(-input * 0.2)
 
-
-/mob/living/simple_mob/slime/xenobio/proc/get_max_nutrition() // Can't go above it
-	return is_adult ? 1200 : 1000
-
 /mob/living/simple_mob/slime/xenobio/proc/get_grow_nutrition() // Above it we grow, below it we can eat
 	return is_adult ? 1000 : 800
 

code/modules/mob/living/simple_mob/subtypes/slime/xenobio/xenobio.dm

@@ -4,6 +4,7 @@
 	desc = "The most basic of slimes.  The grey slime has no remarkable qualities, however it remains one of the most useful colors for scientists."
 	layer = MOB_LAYER + 1 // Need them on top of other mobs or it looks weird when consuming something.
 	ai_holder_type = /datum/ai_holder/simple_mob/xenobio_slime // This should never be changed for xenobio slimes.
+	max_nutrition = 1000
 	var/is_adult = FALSE // Slimes turn into adults when fed enough. Adult slimes are somewhat stronger, and can reproduce if fed enough.
 	var/maxHealth_adult = 200
 	var/power_charge = 0 // Disarm attacks can shock someone if high/lucky enough.
@@ -101,6 +102,7 @@
 	melee_damage_lower = round(melee_damage_lower * 2) // 20
 	melee_damage_upper = round(melee_damage_upper * 2) // 30
 	maxHealth = maxHealth_adult
+	max_nutrition = 1200
 	amount_grown = 0
 	update_icon()
 	update_name()

code/modules/mob/mob_defines.dm

@@ -112,9 +112,7 @@
 	var/bodytemperature = 310.055	//98.7 F
 	var/drowsyness = 0.0//Carbon
 	var/charges = 0.0
-	var/nutrition = 400.0//Carbon
 
-	var/overeatduration = 0		// How long this guy is overeating //Carbon
 	var/paralysis = 0.0
 	var/stunned = 0.0
 	var/weakened = 0.0

code/modules/organs/blood.dm

@@ -133,9 +133,9 @@ var/const/CE_STABLE_THRESHOLD = 0.5
 		// Without enough blood you slowly go hungry.
 		if(blood_volume < BLOOD_VOLUME_SAFE)
 			if(nutrition >= 300)
-				nutrition -= 10
+				adjust_nutrition(-10)
 			else if(nutrition >= 200)
-				nutrition -= 3
+				adjust_nutrition(-3)
 
 		//Bleeding out
 		var/blood_max = 0

code/modules/organs/subtypes/machine.dm

@@ -19,7 +19,7 @@
 
 /obj/item/organ/internal/cell/emp_act(severity)
 	..()
-	owner.nutrition = max(0, owner.nutrition - rand(10/severity, 50/severity))
+	owner.adjust_nutrition(-rand(10 / severity, 50 / severity))
 
 // Used for an MMI or posibrain being installed into a human.
 /obj/item/organ/internal/mmi_holder

code/modules/power/cells/power_cells.dm

@@ -130,7 +130,7 @@
 	used = TRUE
 	desc += " This one has already been used."
 	overlays.Cut()
-	target.nutrition += amount
+	target.adjust_nutrition(amount)
 	user.custom_emote(message = "connects \the [src] to [user == target ? "their" : "[target]'s"] charging port, expending it.")
 
 /obj/item/weapon/cell/emergency_light

code/modules/projectiles/guns/energy.dm

@@ -76,7 +76,7 @@
 					var/start_nutrition = H.nutrition
 					var/end_nutrition = 0
 
-					H.nutrition -= rechargeamt / 15
+					H.adjust_nutrition(-rechargeamt / 15)
 
 					end_nutrition = H.nutrition
 

code/modules/projectiles/projectile/special.dm

@@ -197,11 +197,11 @@
 	impact_effect_type = /obj/effect/temp_visual/impact_effect/monochrome_laser
 
 /obj/item/projectile/energy/florayield/on_hit(var/atom/target, var/blocked = 0)
-	var/mob/M = target
+	var/mob/living/M = target
 	if(ishuman(target)) //These rays make plantmen fat.
 		var/mob/living/carbon/human/H = M
 		if((H.species.flags & IS_PLANT) && (M.nutrition < 500))
-			M.nutrition += 30
+			M.adjust_nutrition(30)
 	else if (istype(target, /mob/living/carbon/))
 		M.show_message("<font color='blue'>The radiation beam dissipates harmlessly through your body.</font>")
 	else

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Core.dm

@@ -44,7 +44,7 @@
 
 	if(alien == IS_SLIME)	// Treat it like nutriment for the jello, but not equivalent.
 		M.heal_organ_damage(0.2 * removed * volume_mod, 0)	// More 'effective' blood means more usable material.
-		M.nutrition += 20 * removed * volume_mod
+		M.adjust_nutrition(20 * removed * volume_mod)
 		M.add_chemical_effect(CE_BLOODRESTORE, 4 * removed)
 		M.adjustToxLoss(removed / 2)	// Still has some water in the form of plasma.
 		return

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Dispenser.dm

@@ -138,7 +138,7 @@
 
 /datum/reagent/ethanol/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
 	if(issmall(M)) removed *= 2
-	M.nutrition += nutriment_factor * removed
+	M.adjust_nutrition(nutriment_factor * removed)
 	var/strength_mod = 1
 	if(alien == IS_SKRELL)
 		strength_mod *= 5
@@ -448,7 +448,7 @@
 	glass_icon = DRINK_ICON_NOISY
 
 /datum/reagent/sugar/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
-	M.nutrition += removed * 3
+	M.adjust_nutrition(removed * 3)
 
 	var/effective_dose = dose
 	if(issmall(M))

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm

@@ -45,7 +45,7 @@
 		if(IS_UNATHI) removed *= 0.5
 	if(issmall(M)) removed *= 2 // Small bodymass, more effect from lower volume.
 	M.heal_organ_damage(0.5 * removed, 0)
-	M.nutrition += nutriment_factor * removed // For hunger and fatness
+	M.adjust_nutrition(nutriment_factor * removed)
 	M.add_chemical_effect(CE_BLOODRESTORE, 4 * removed)
 
 /datum/reagent/nutriment/glucose
@@ -382,10 +382,7 @@
 	overdose = REAGENTS_OVERDOSE
 
 /datum/reagent/lipozine/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
-	M.nutrition = max(M.nutrition - 10 * removed, 0)
-	M.overeatduration = 0
-	if(M.nutrition < 0)
-		M.nutrition = 0
+	M.adjust_nutrition(-10 * removed)
 
 /* Non-food stuff like condiments */
 
@@ -653,7 +650,7 @@
 	return
 
 /datum/reagent/drink/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
-	M.nutrition += nutrition * removed
+	M.adjust_nutrition(nutrition * removed)
 	M.dizziness = max(0, M.dizziness + adj_dizzy)
 	M.drowsyness = max(0, M.drowsyness + adj_drowsy)
 	M.sleeping = max(0, M.sleeping + adj_sleepy)

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm

@@ -519,7 +519,7 @@
 		return
 	if(alien == IS_SLIME)
 		if(dose >= 5) //Not effective in small doses, though it causes toxloss at higher ones, it will make the regeneration for brute and burn more 'efficient' at the cost of more nutrition.
-			M.nutrition -= removed * 2
+			M.adjust_nutrition(removed * 2)
 			M.adjustBruteLoss(-2 * removed)
 			M.adjustFireLoss(-1 * removed)
 		chem_effective = 0.5
@@ -547,7 +547,7 @@
 	if(alien == IS_SLIME)
 		M.make_jittery(4) //Hyperactive fluid pumping results in unstable 'skeleton', resulting in vibration.
 		if(dose >= 5)
-			M.nutrition = (M.nutrition - (removed * 2)) //Sadly this movement starts burning food in higher doses.
+			M.adjust_nutrition(-removed * 2) // Sadly this movement starts burning food in higher doses.
 	..()
 	if(prob(5))
 		M.emote(pick("twitch", "blink_r", "shiver"))
@@ -737,7 +737,7 @@
 			if(prob(10))
 				H.vomit(1)
 			else if(H.nutrition > 30)
-				H.nutrition = max(0, H.nutrition - round(30 * removed))
+				M.adjust_nutrition(-removed * 30)
 		else
 			H.adjustToxLoss(-10 * removed) // Carthatoline based, considering cost.
 
@@ -1091,7 +1091,7 @@
 			M.make_jittery(5)
 		if(dose >= 20 || M.toxloss >= 60) //Core disentigration, cellular mass begins treating itself as an enemy, while maintaining regeneration. Slime-cancer.
 			M.adjustBrainLoss(2 * removed)
-			M.nutrition = max(H.nutrition - 20, 0)
+			M.adjust_nutrition(-20)
 		if(M.bruteloss >= 60 && M.toxloss >= 60 && M.brainloss >= 30) //Total Structural Failure. Limbs start splattering.
 			var/obj/item/organ/external/O = pick(H.organs)
 			if(prob(20) && !istype(O, /obj/item/organ/external/chest/unbreakable/slime) && !istype(O, /obj/item/organ/external/groin/unbreakable/slime))

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Toxins.dm

@@ -19,7 +19,7 @@
 		if(alien == IS_SLIME)
 			removed *= 0.25 // Results in half the standard tox as normal. Prometheans are 'Small' for flaps.
 			if(dose >= 10)
-				M.nutrition += strength * removed //Body has to deal with the massive influx of toxins, rather than try using them to repair.
+				M.adjust_nutrition(removed * removed) // Body has to deal with the massive influx of toxins, rather than try using them to repair.
 			else
 				M.heal_organ_damage((10/strength) * removed, (10/strength) * removed) //Doses of toxins below 10 units, and 10 strength, are capable of providing useful compounds for repair.
 		M.adjustToxLoss(strength * removed)
@@ -396,7 +396,7 @@
 
 /datum/reagent/toxin/sifslurry/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
 	if(alien == IS_DIONA) // Symbiotic bacteria.
-		M.nutrition += strength * removed
+		M.adjust_nutrition(removed * removed)
 		return
 	else
 		M.add_modifier(/datum/modifier/slow_pulse, 30 SECONDS)

code/modules/spells/spellbook.dm

@@ -300,13 +300,11 @@
 	icon_state ="booksmoke"
 	desc = "This book is overflowing with the dank arts."
 
-/obj/item/weapon/spellbook/oneuse/smoke/recoil(mob/user as mob)
+/obj/item/weapon/spellbook/oneuse/smoke/recoil(mob/living/user as mob)
 	..()
 	to_chat(user, "<span class='caution'>Your stomach rumbles...</span>")
 	if(user.nutrition)
-		user.nutrition -= 200
-		if(user.nutrition <= 0)
-			user.nutrition = 0
+		user.adjust_nutrition(-200)
 
 /obj/item/weapon/spellbook/oneuse/blind
 	spell = /spell/targeted/genetic/blind

code/modules/virus2/effect.dm

@@ -424,7 +424,7 @@
 	stage = 2
 
 /datum/disease2/effect/hungry/activate(var/mob/living/carbon/mob,var/multiplier)
-	mob.nutrition = max(0, mob.nutrition - 200)
+	mob.adjust_nutrition(-200)
 
 /datum/disease2/effect/fridge
 	name = "Reduced Circulation"

code/modules/xenoarcheaology/effects/heal.dm

@@ -17,7 +17,7 @@
 						affecting.heal_damage(25 * weakness, 25 * weakness)
 				//H:heal_organ_damage(25, 25)
 				H.vessel.add_reagent("blood",5)
-				H.nutrition += 50 * weakness
+				H.adjust_nutrition(50 * weakness)
 				H.adjustBrainLoss(-25 * weakness)
 				H.radiation -= min(H.radiation, 25 * weakness)
 				H.bodytemperature = initial(H.bodytemperature)

code/modules/xenoarcheaology/effects/hurt.dm

@@ -14,6 +14,7 @@
 			C.adjustFireLoss(rand(5,25) * weakness)
 			C.adjustBrainLoss(rand(1,5) * weakness)
 			C.apply_effect(25 * weakness, IRRADIATE)
+			C.adjust_nutrition(-50 * weakness)
 			C.nutrition -= min(50 * weakness, C.nutrition)
 			C.make_dizzy(6 * weakness)
 			C.weakened += 6 * weakness