Health Boost

Health Boost is an unused status effect that increases maximum health of an entity.

Adds 4HP maximum health per level. Unlike Absorption, the added hearts are empty at first, but can be healed through the usual methods (such as natural regeneration and the Regeneration and Instant Health effects). Health of any entity is capped at 1024HP × 512 and extra health provided by Health Boost can't exceed that, so for players, maximum health is reached at Health Boost level 251.

Extra hearts of a mounted mob can be seen while riding it.

When the effect ends, any extra health is lost. In Java Edition, losing this extra health causes the player's view to jolt as if taking damage, even in Creative or Spectator mode.

Health Boost can be obtained only by executing /effect.

Withers and ender dragons are immune to Health Boost.

Java Edition:

Name	Identifier	Numeric ID	Translation key
Health Boost	health_boost	21	effect.minecraft.health_boost

Bedrock Edition:

Name	Identifier	Numeric ID	Translation key
Health Boost	health_boost	21	potion.healthBoost

Java Edition
1.6.1			13w23b				Added Health Boost.
							Normal golden apples now grant 1:30 of Health Boost.
			13w24b				Normal golden apples no longer grant Health Boost, instead granting Absorption.
1.9			15w49a				Health Boost now has a distinct icon from Absorption.
1.14			18w43a				The effect icon texture of Health Boost has been changed.
1.20.2			23w31a				Reapplying the effect no longer empties bonus hearts.[1]

Pocket Edition Alpha
v0.11.0			build 1				Added Health Boost.
Bedrock Edition
1.8.0			beta 1.8.0.10				Changed the icon for the Health Boost effect. Previously, it used the icon of the Absorption effect.
1.10.0			beta 1.10.0.3				The effect icon texture of Health Boost has been changed again.[is this the correct version?]

Legacy Console Edition
Xbox 360	Xbox One	PS3	PS4	PS Vita	Wii U	Switch
TU19	CU7	1.12	1.12	1.12	Patch 1	1.0.1	Added Health Boost.[is this the correct version?]
TU54	CU44	1.52	1.52	1.52	Patch 24	1.0.4	Changed the icon for the Health Boost effect. Previously, it used the icon of the Absorption effect.[is this the correct version?][verify]
			1.91				The effect icon texture of Health Boost has been changed again.[verify]

Issues relating to "Health Boost" are maintained on the bug tracker. Issues should be reported and viewed there.

• The maximum health the player can achieve using Health Boost and Absorption is 2048HP × 1024.
• Applying a high level of this effect and Regeneration to a tamed wolf makes its tail rotate several times, because tamed wolves' tails rotate upward to indicate current health, with no upper bound.

v t e Effects
Attack power	Strength Weakness
Block breaking	Haste Mining Fatigue
Health	Absorption Instant Damage Instant Health Poison Regeneration Wither BE only Fatal Poison Unused Health Boost
Hunger	Hunger Saturation
Loot	Hero of the Village Unused JE & LCE only Bad Luck Luck
Movement	Jump Boost Levitation Slow Falling Slowness Speed JE only Dolphin's Grace
Ominous events	Bad Omen Raid Omen Trial Omen
Protective	Breath of the Nautilus Conduit Power Fire Resistance Resistance Water Breathing
Spawns	Infested Oozing Weaving Wind Charged
Visibility	Blindness Darkness Invisibility Nausea Night Vision JE & LCE only Glowing
Joke	Big Caring It's very slippery Sharing Shazboots! Small Sticky

v t e Unused features
Items	JE only Uncraftable Potion Splash Lingering Arrow Potion of Luck Splash Lingering Arrow LCE only debug_fourj_item
Blocks	Petrified Oak Slab BE only Chalkboard BE & Edu only Camera Chiseled Purpur Deprecated Anvil Glowing Obsidian Nether Reactor Core tile.deprecated_purpur_block_2.name Old Stonecutter Unknown tile.reserved6.name tile.info_update.name tile.info_update2.name
Entities	JE only Giant Illusioner Killer Bunny Minecart with Monster Spawner BE only Elder Guardian Ghost Old Villager Zombie Tripod Camera
Biomes	BE only Badlands Plateau Modified Wooded Birch Forest Hills Dark Forest Hills Deep Warm Ocean Desert Hills Desert Lakes Gravelly Mountains+ Jungle Hills Bamboo Legacy Frozen Ocean Modified Jungle Edge Mountain Edge Mushroom Field Shore Shattered Savanna Plateau Snowy Mountains Swamp Hills Taiga Hills Giant Spruce Giant Tree Snowy Taiga Mountains Snowy Tall Birch Hills Wooded Hills
Effects	Health Boost JE only Luck Bad Luck