diff --git a/app/models/collection.rb b/app/models/collection.rb
index b84e849636c3b47c83125d3278c0585529289c82..05e75b4a0a63331a51aa6ae285dd2dfc751c0625 100644
--- a/app/models/collection.rb
+++ b/app/models/collection.rb
@@ -40,7 +40,7 @@ class Collection < ApplicationRecord
   has_many :learning_objects, through: :collection_items, source: :collectionable, source_type: 'LearningObject'
   has_many :collection_items
 
-  belongs_to :owner, polymorphic: true
+  belongs_to :owner, polymorphic: true, counter_cache: true
 
   validates :name, :owner, presence: true
   validates_inclusion_of :privacy, in: %w(public private), message: 'Privacy must be public or private'
diff --git a/app/models/learning_object.rb b/app/models/learning_object.rb
index 18cb166798888bc3badf45f3d857a77f36d98c7d..2a4b12d7e532f7ffdffc3dfeedbfcb65b5d1ed8f 100644
--- a/app/models/learning_object.rb
+++ b/app/models/learning_object.rb
@@ -52,7 +52,7 @@ class LearningObject < ApplicationRecord
   has_many :collections, through: :collection_items
   has_many :attachments, class_name: 'LearningObject::Attachment', autosave: true # autosave to allow import
 
-  belongs_to :publisher, polymorphic: true
+  belongs_to :publisher, polymorphic: true, counter_cache: true
   belongs_to :language
   belongs_to :license
   belongs_to :object_type
diff --git a/app/models/like.rb b/app/models/like.rb
index 4b4b8cd75abd1234163f125568c2b2a0074412f6..9b57efdd6d21d4c8d04464766bbcd64a9fd7d3c3 100644
--- a/app/models/like.rb
+++ b/app/models/like.rb
@@ -16,7 +16,7 @@ class Like < ApplicationRecord
   include Trackable
 
   belongs_to :likeable, polymorphic: true, counter_cache: true
-  belongs_to :user
+  belongs_to :user, counter_cache: true
 
   validates_presence_of :user, :likeable
   validates :user_id, uniqueness: { scope: [:likeable_id, :likeable_type] }
diff --git a/app/serializers/collection_serializer.rb b/app/serializers/collection_serializer.rb
index 30417a245d39a655d527e7a2234c48d30b41f2ee..1213c0d677590d880cc4e96bb7ea516cdece37ac 100644
--- a/app/serializers/collection_serializer.rb
+++ b/app/serializers/collection_serializer.rb
@@ -1,6 +1,6 @@
 class CollectionSerializer < ActiveModel::Serializer
   cache key: 'collection', expires_in: 4.hours
-  attributes :id, :name, :owner, :created_at, :updated_at, :description, :privacy, :score
+  attributes :id, :name, :owner, :created_at, :updated_at, :description, :privacy, :score, :likes_count, :review_average, :thumbnail
   has_many :tags
   has_many :subjects
   has_many :educational_stages
diff --git a/app/serializers/user_serializer.rb b/app/serializers/user_serializer.rb
index b36b9b116304623d8bc01e01c22270e59491ecdc..151abb94338cdca865403115ce1bcdfa02be9f44 100644
--- a/app/serializers/user_serializer.rb
+++ b/app/serializers/user_serializer.rb
@@ -1,6 +1,4 @@
 class UserSerializer < ActiveModel::Serializer
   cache key: 'user', expires_in: 4.hours
-  attributes :id, :email, :name, :description, :created_at, :updated_at, :role_ids, :institution_ids, :avatar
-  # has_many :roles
-  # has_many :institutions
+  attributes :id, :email, :provider, :name, :description, :role_ids, :institution_ids, :avatar, :likes_count, :follows_count, :learning_objects_count, :collections_count, :created_at, :updated_at
 end
diff --git a/db/migrate/20161125134057_add_counts_to_user.rb b/db/migrate/20161125134057_add_counts_to_user.rb
new file mode 100644
index 0000000000000000000000000000000000000000..5da4a078c820b4d28bce4da3af0762a351a13c1b
--- /dev/null
+++ b/db/migrate/20161125134057_add_counts_to_user.rb
@@ -0,0 +1,7 @@
+class AddCountsToUser < ActiveRecord::Migration[5.0]
+  def change
+    add_column :users, :likes_count, :integer, default: 0
+    add_column :users, :learning_objects_count, :integer, default: 0
+    add_column :users, :collections_count, :integer, default: 0
+  end
+end
diff --git a/db/migrate/20161125153200_add_review_average_to_collection.rb b/db/migrate/20161125153200_add_review_average_to_collection.rb
new file mode 100644
index 0000000000000000000000000000000000000000..538338d7120d190dbc6a01d40dbed7101e039d4c
--- /dev/null
+++ b/db/migrate/20161125153200_add_review_average_to_collection.rb
@@ -0,0 +1,5 @@
+class AddReviewAverageToCollection < ActiveRecord::Migration[5.0]
+  def change
+    add_column :collections, :review_average, :float, default: 0.0
+  end
+end