HUD

code/_onclick/hud/alert.dm

@@ -143,6 +143,21 @@ The box in your backpack has an oxygen tank and gas mask in it."
 	desc = "You ate too much food, lardass. Run around the station and lose some weight."
 	icon_state = "fat"
 
+/obj/screen/alert/full
+	name = "Full"
+	desc = "You feel full and satisfied, but you shouldn't eat much more."
+	icon_state = "full"
+
+/obj/screen/alert/well_fed
+	name = "Well Fed"
+	desc = "You feel quite satisfied, but you may be able to eat a bit more."
+	icon_state = "well_fed"
+
+/obj/screen/alert/fed
+	name = "Fed"
+	desc = "You feel moderately satisfied, but a bit more food may not hurt."
+	icon_state = "fed"
+
 /obj/screen/alert/hungry
 	name = "Hungry"
 	desc = "Some food would be good right about now."

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

@@ -667,8 +667,12 @@
 	switch(H.nutrition)
 		if(NUTRITION_LEVEL_FULL to INFINITY)
 			H.throw_alert("nutrition", /obj/screen/alert/fat)
-		if(NUTRITION_LEVEL_HUNGRY to NUTRITION_LEVEL_FULL)
-			H.clear_alert("nutrition")
+		if(NUTRITION_LEVEL_WELL_FED to NUTRITION_LEVEL_FULL)
+			H.throw_alert("nutrition", /obj/screen/alert/full)
+		if(NUTRITION_LEVEL_FED to NUTRITION_LEVEL_WELL_FED)
+			H.throw_alert("nutrition", /obj/screen/alert/well_fed)
+		if(NUTRITION_LEVEL_HUNGRY to NUTRITION_LEVEL_FED)
+			H.throw_alert("nutrition", /obj/screen/alert/fed)
 		if(NUTRITION_LEVEL_STARVING to NUTRITION_LEVEL_HUNGRY)
 			H.throw_alert("nutrition", /obj/screen/alert/hungry)
 		else