diff --git a/data/cat.py b/data/cat.py
index 6345cd6..7746e0b 100644
--- a/data/cat.py
+++ b/data/cat.py
@@ -11,6 +11,7 @@ class Cat:
         last_login=None,
         fullness=100,
         happiness=100,
+        sick=False,
     ):
         self.name = name
         self.traits = traits
@@ -19,6 +20,7 @@ class Cat:
         self.inventory = inventory if inventory is not None else {}
         self.fullness = fullness  # really hunger, but 100 hunger being defualt sounds like its 100% hungry so its fullness.
         self.happiness = happiness
+        self.sick = sick
 
     def apply_decay(self):  # first neat function! yayyy!
         elapsed_hours = (time.time() - self.last_login) / 3600
@@ -26,6 +28,12 @@ class Cat:
             elapsed_hours = 0
         self.fullness -= 5 * elapsed_hours
         self.happiness -= 5 * elapsed_hours
+        if self.fullness <= 0:
+            self.fullness = 0
+            self.sick = True
+            print(
+                "Your cat didn't have enough food and got sick. There is medicine in the shop."
+            )
 
     def to_dict(self):
         return vars(self)
diff --git a/data/text.py b/data/text.py
index 27b96ae..49e4d1d 100644
--- a/data/text.py
+++ b/data/text.py
@@ -33,6 +33,6 @@ CAT_PERSONALITIES = [  # TODO: start at different happiness levels based on pers
 CAT_EYE_COLORS = ["green", "yellow", "blue", "orange"]
 
 
-SHOP_ITEMS = {"Food": 5}
+SHOP_ITEMS = {"Food": 5, "Medicine": 15}
 
 BYPASS_TAMPER_CHECK_MESSAGE = "I truly understand that this is cheating and that it is ONLY for development and nothing else. I understand that it is mean to mess with my cat savefile and I apologize to my cat."
diff --git a/systems/items.py b/systems/items.py
index 5e94f4d..f56ae8b 100644
--- a/systems/items.py
+++ b/systems/items.py
@@ -11,5 +11,22 @@ def item_menu(cat: data.cat.Cat, item):
                     systems.world.feed(cat)
                 case "Back":
                     pass
+        case "Medicine":
+            match ui.select(
+                "Please choose an option", [f"Give your cat the medicine", "Back"]
+            ):
+                case "Give your cat the medicine":
+                    if cat.inventory.get("Medicine", False):
+                        cat.sick = False
+                        cat.fullness = 25.0
+                        cat.inventory["Medicine"] -= 1
+                        print(
+                            f"{cat.name} eats the medicine. {cat.name} is feeling better! They still are hungry though."
+                        )
+                    else:
+                        print("You don't have any medicine!")
+                case "Back":
+                    pass
+
         case _:
             pass
diff --git a/systems/world.py b/systems/world.py
index 249d9c9..aa64fd2 100644
--- a/systems/world.py
+++ b/systems/world.py
@@ -129,6 +129,9 @@ def pet(cat: Cat):
         else:
             cat.happiness -= 5
             print(f"\n{cat.name} ran away to protect your hands")
+            print(
+                f"You lost 5% happiness due to stressing your cat. Before petting, your cat was {original_happiness}% happy. You lost {original_happiness-cat.happiness}% happiness. Your cat is now {cat.happiness}% happy."
+            )
             return
     if count == 0:
         print("You didn't pet your cat at all.")
@@ -163,10 +166,6 @@ def pet(cat: Cat):
     if cat.happiness > 100:
         cat.happiness = 100
         print("Your cat's happiness went above 100% and was capped back down to 100%.")
-    if cat.happiness < original_happiness:
-        print(
-            f"You lost 5% happiness due to stressing your cat. Before petting, your cat was {original_happiness}% happy. You lost {original_happiness-cat.happiness}% happiness. Your cat is now {cat.happiness}% happy."
-        )
     else:
         print(
             f"Your cat is now {cat.happiness}% percent happy. Before petting, your cat was {original_happiness}% happy. You gained {cat.happiness-original_happiness}% happiness."
@@ -174,6 +173,9 @@ def pet(cat: Cat):
 
 
 def feed(cat: Cat):
+    if cat.sick:
+        print(f"{cat.name} is too sick to eat, head over to the shop to buy medicine!")
+        return
     if cat.inventory.get("Food", 0) <= 0:
         print(f"You don't have any food. {cat.name} is sad.")
         return
@@ -201,6 +203,8 @@ def storage(cat: Cat):
 
 def house(cat: Cat):
     print("Welcome to your house!")
+    if cat.sick:
+        print(f"{cat.name} is sick, go to the shop to get medicine!")
     while True:
         match ui.select(
             "Please choose an option",
@@ -213,16 +217,29 @@ def house(cat: Cat):
             ],
         ):
             case "Check on your cat":
-                print(
-                    f"{cat.name} - a {cat.traits["size"]} {cat.traits["color"]} with {cat.traits["eyes"]} eyes."
-                )
-                print(f"Happiness: {round(cat.happiness,1)}%")
-                print(f"Fullness: {round(cat.fullness,1)}/100")
-                print(f"You have ${cat.money}.")
+                if not cat.sick:
+                    print(
+                        f"{cat.name} - a {cat.traits["size"]} {cat.traits["color"]} with {cat.traits["eyes"]} eyes."
+                    )
+                    print(f"Happiness: {round(cat.happiness,1)}%")
+                    print(f"Fullness: {round(cat.fullness,1)}/100")
+                    print(f"You have ${cat.money}.")
+                else:
+                    print(f"{cat.name} is still sick! Go to the shop to get medicine!")
             case "Pet your cat":
-                pet(cat)
+                if not cat.sick:
+                    pet(cat)
+                else:
+                    print(
+                        f"{cat.name} is too sick for pets, go to the shop for medicine!"
+                    )
             case "Feed your cat":
-                feed(cat)
+                if not cat.sick:
+                    feed(cat)
+                else:
+                    print(
+                        f"{cat.name} is too sick to eat, head over to the shop to buy medicine!"
+                    )
             case "Storage":
                 storage(cat)
             case "Leave your house":