diff --git a/src/bionics.cpp b/src/bionics.cpp
index cb66c7d45e9b8..26c312a4c2ac9 100644
--- a/src/bionics.cpp
+++ b/src/bionics.cpp
@@ -1174,9 +1174,7 @@ bool Character::activate_bionic( bionic &bio, bool eff_only, bool *close_bionics
         }
     }
     bio_flag_cache.clear();
-    // Recalculate stats (strength, mods from pain etc.) that could have been affected
     calc_encumbrance();
-    reset();
 
     // Also reset crafting inventory cache if this bionic spawned a fake item
     if( bio.has_weapon() || !bio.info().passive_pseudo_items.empty() ||
@@ -1272,9 +1270,7 @@ bool Character::deactivate_bionic( bionic &bio, bool eff_only )
         }
     }
 
-    // Recalculate stats (strength, mods from pain etc.) that could have been affected
     calc_encumbrance();
-    reset();
     if( !bio.id->enchantments.empty() ) {
         recalculate_enchantment_cache();
     }
diff --git a/src/character.h b/src/character.h
index 2e0c6ffc232a3..0ef70a84cb1d9 100644
--- a/src/character.h
+++ b/src/character.h
@@ -1541,16 +1541,12 @@ class Character : public Creature, public visitable
         bool made_of_any( const std::set<material_id> &ms ) const override;
 
     private:
-        /** Retrieves a stat mod of a mutation. */
-        int get_mod( const trait_id &mut, const std::string &arg ) const;
         /** Applies skill-based boosts to stats **/
         void apply_skill_boost();
     protected:
 
         void on_move( const tripoint_abs_ms &old_pos ) override;
         void do_skill_rust();
-        /** Applies stat mods to character. */
-        void apply_mods( const trait_id &mut, bool add_remove );
 
         /** Applies encumbrance from mutations and bionics only */
         void mut_cbm_encumb( std::map<bodypart_id, encumbrance_data> &vals ) const;
diff --git a/src/mutation.cpp b/src/mutation.cpp
index a6fef23a36699..086b41cffadd1 100644
--- a/src/mutation.cpp
+++ b/src/mutation.cpp
@@ -444,32 +444,6 @@ bool reflex_activation_data::is_trigger_true( Character &guy ) const
     return trigger( d );
 }
 
-int Character::get_mod( const trait_id &mut, const std::string &arg ) const
-{
-    const auto &mod_data = mut->mods;
-    int ret = 0;
-    auto found = mod_data.find( std::make_pair( false, arg ) );
-    if( found != mod_data.end() ) {
-        ret += found->second;
-    }
-    return ret;
-}
-
-void Character::apply_mods( const trait_id &mut, bool add_remove )
-{
-    int sign = add_remove ? 1 : -1;
-    int str_change = get_mod( mut, "STR" );
-    str_max += sign * str_change;
-    per_max += sign * get_mod( mut, "PER" );
-    dex_max += sign * get_mod( mut, "DEX" );
-    int_max += sign * get_mod( mut, "INT" );
-
-    reset_stats();
-    if( str_change != 0 ) {
-        recalc_hp();
-    }
-}
-
 bool mutation_branch::conflicts_with_item( const item &it ) const
 {
     if( allow_soft_gear && it.is_soft() ) {
@@ -575,9 +549,8 @@ void Character::mutation_effect( const trait_id &mut, const bool worn_destroyed_
 {
     if( mut == trait_GLASSJAW ) {
         recalc_hp();
-    } else {
-        apply_mods( mut, true );
     }
+    reset();
 
     recalculate_size();
 
@@ -655,9 +628,8 @@ void Character::mutation_loss_effect( const trait_id &mut )
 {
     if( mut == trait_GLASSJAW ) {
         recalc_hp();
-    } else {
-        apply_mods( mut, false );
     }
+    reset();
 
     recalculate_size();
 
@@ -997,8 +969,6 @@ void Character::deactivate_mutation( const trait_id &mut )
     my_mutations[mut].powered = false;
     trait_flag_cache.clear();
 
-    // Handle stat changes from deactivation
-    apply_mods( mut, false );
     recalc_sight_limits();
     const mutation_branch &mdata = mut.obj();
     if( mdata.transform ) {
diff --git a/src/mutation.h b/src/mutation.h
index 7f83978484377..cc1690037dab1 100644
--- a/src/mutation.h
+++ b/src/mutation.h
@@ -351,9 +351,6 @@ struct mutation_branch {
         std::set<sub_bodypart_str_id> remove_rigid_subparts;
         // item flags that allow wearing gear even if its body part is restricted
         std::set<flag_id> allowed_items;
-        // Mutation stat mods
-        /** Key pair is <active: bool, mod type: "STR"> */
-        std::unordered_map<std::pair<bool, std::string>, int, cata::tuple_hash> mods;
         std::map<bodypart_str_id, resistances> armor; // Modifiers to protection values
         std::vector<itype_id> integrated_armor; // Armor pseudo-items that are put on by this mutation
         std::vector<matype_id>