diff --git a/app/Models/User.php b/app/Models/User.php
index b520939f9..484a0d166 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -249,6 +249,11 @@ public function purge(): void
         $this->followers()->detach();
         $this->following()->detach();
 
+        $this->notifications()->delete();
+
+        $this->questionsReceived->each->delete();
+        $this->questionsSent->each->delete();
+
         $this->delete();
     }
 
diff --git a/app/Observers/QuestionObserver.php b/app/Observers/QuestionObserver.php
index 31944effe..3cfe6c524 100644
--- a/app/Observers/QuestionObserver.php
+++ b/app/Observers/QuestionObserver.php
@@ -80,10 +80,12 @@ public function deleted(Question $question): void
             $user->notifications()->whereJsonContains('data->question_id', $question->id)->delete();
         });
 
-        $question->loadMissing('children');
+        $question->loadMissing(['children', 'descendants']);
 
         $question->children->each->delete();
 
+        $question->descendants->each->delete();
+
         $question->hashtags()->detach();
     }
 }
diff --git a/tests/Unit/Models/UserTest.php b/tests/Unit/Models/UserTest.php
index d78363916..c41705209 100644
--- a/tests/Unit/Models/UserTest.php
+++ b/tests/Unit/Models/UserTest.php
@@ -2,6 +2,7 @@
 
 declare(strict_types=1);
 
+use App\Models\Question;
 use App\Models\User;
 
 test('to array', function () {
@@ -160,3 +161,40 @@
     $this->assertNull($user->fresh());
     $this->assertDatabaseCount('links', 0);
 });
+
+test('purge notifications with user', function () {
+    $user = User::factory()->create();
+    Question::factory(2)->create([
+        'to_id' => $user->id,
+    ]);
+    $this->assertDatabaseCount('notifications', 2);
+
+    $this->actingAs($user)
+        ->delete(route('profile.destroy'), [
+            'password' => 'password',
+        ]);
+
+    $this->assertNull($user->fresh());
+    $this->assertDatabaseCount('notifications', 0);
+});
+
+test('purge questions, comments and decendants with user', function () {
+    $user = User::factory()->hasQuestionsSent(2)->create();
+    Question::factory()
+        ->hasChildren(2)
+        ->hasDescendants(2)
+        ->create([
+            'from_id' => $user->id,
+            'to_id' => $user->id,
+        ]);
+
+    $this->assertDatabaseCount('questions', 7);
+
+    $this->actingAs($user)
+        ->delete(route('profile.destroy'), [
+            'password' => 'password',
+        ]);
+
+    $this->assertNull($user->fresh());
+    $this->assertDatabaseCount('questions', 0);
+});
diff --git a/tests/Unit/Observers/QuestionObserverTest.php b/tests/Unit/Observers/QuestionObserverTest.php
index e07abdaed..85b738303 100644
--- a/tests/Unit/Observers/QuestionObserverTest.php
+++ b/tests/Unit/Observers/QuestionObserverTest.php
@@ -197,7 +197,11 @@
     $mentionedUser = User::factory()->create([
         'username' => 'johndoe',
     ]);
-    $question = Question::factory()->create();
+    $question = Question::factory()
+        ->has(Question::factory()->sharedUpdate()->count(3)->state([
+            'answer' => 'descendant',
+        ]), 'descendants')
+        ->create();
     $question->update([
         'answer' => 'My favourite developer is to @johndoe',
     ]);
@@ -208,6 +212,7 @@
         ->create();
 
     expect($question->children()->count())->toBe(3);
+    expect($question->descendants()->count())->toBe(3);
     expect($question->to->notifications()->count())->toBe(0);
     expect($question->from->notifications()->count())->toBe(1);
     expect($mentionedUser->notifications()->count())->toBe(1);
@@ -217,6 +222,7 @@
     expect($question->from->fresh()->notifications()->count())->toBe(0);
     expect($mentionedUser->fresh()->notifications()->count())->toBe(0);
     expect($question->children()->count())->toBe(0);
+    expect($question->descendants()->count())->toBe(0);
 });
 
 test('deleted', function () {
@@ -242,7 +248,11 @@
         'username' => 'johndoe',
     ]);
 
-    $question = Question::factory()->create();
+    $question = Question::factory()
+        ->has(Question::factory()->sharedUpdate()->count(3)->state([
+            'answer' => 'descendant',
+        ]), 'descendants')
+        ->create();
     $question->update([
         'answer' => 'My favourite developer is to @johndoe',
     ]);
@@ -257,6 +267,7 @@
 
     expect($question->children()->count())->toBe(3);
     expect(Question::where('answer', 'grandchild')->count())->toBe(9);
+    expect(Question::where('answer', 'descendant')->count())->toBe(3);
     expect($question->to->notifications()->count())->toBe(0);
     expect($question->from->notifications()->count())->toBe(1);
     expect($mentionedUser->notifications()->count())->toBe(1);
@@ -267,6 +278,7 @@
     expect($mentionedUser->fresh()->notifications()->count())->toBe(0);
     expect($question->children()->count())->toBe(0);
     expect(Question::where('answer', 'grandchild')->count())->toBe(0);
+    expect(Question::where('answer', 'descendant')->count())->toBe(0);
 });
 
 test('hashtags are synced when created', function () {