Health

System Name	Biological Body Parts	Mechanical Body Parts	Biological Pawns Have?	Mechanical Pawns Have?	Fatal if all capacity lost?^[1]
Pain	-	-	Yes	No	No
Consciousness	Brain	-	Yes	No	Yes
Data Processing	-	Mechanical Brain	No	Yes	Yes
Sight	Eye	Sight Sensor	Yes	Yes	No
Hearing	Ear	Hearing Sensor	Yes	Yes	No
Moving	Leg, Foot	Leg, Foot^[2]	Yes	Yes	No
Manipulation	Arm, Hand	Arm, Hand^[3]	Yes	Yes	No
Talking	Jaw, Neck	-	Yes	No	No
Communication	-	Neck^[4]	No	Yes	No
Breathing	Lungs	-	Yes	No	Yes
Blood Filtration	Kidneys, Liver	-	Yes	No	Yes
Fluid Reprocessing	-	Fluid Reprocessor	No	Yes	Yes
Blood Pumping	Heart	-	Yes	No	Yes
Power Generation	-	Reactor	No	Yes	Yes
Digestion	Stomach	-	Yes	No	Yes

↑ Refers to whether or not the pawn will die if a system's capacity becomes 'None'
↑ Centipedes body rings are used for movement instead, since they don't have legs.
↑ Again, Centipedes body rings are used for work instead, since they don't have arms.
↑ Centipedes have no form of external communication. Scythers do have a neck though, and make some interesting sounds when incapacitated.

Sight

Main article: Sight

Sight is a capacity that contributes to stats including shooting accuracy, melee hit chance, and for colonists, nearly every work stat. Humans and animals have eyes, while scythers and centipedes have functionally equivalent sight sensors. Losing an eye or sensor reduces sight by 50%. Humans aged 50 or older may develop cataracts which drastically reduces sight by 50%. An eye can be upgraded with a bionic eye.

Hearing

Main article: Hearing

Hearing is a capacity that contributes to trade price improvement. Hearing is reduced by damaged, missing ears, or hearing loss. Hearing can be improved past 100% with a bionic ear, however no derived stat benefits from doing so.

Moving

Main article: Moving

Moving is a pawn's capacity to use their legs to move about. It's a major factor in a pawn's overall movement speed. Moving is reduced when a leg, femur, tibia, foot, toe or their spine is injured.

Consciousness applies a 1 for 1 multiplier on moving, while breathing and blood pumping does the same but only up to -10% moving, so anything that affects any of these stats will also increase or reduce moving by the same amount. Moving is also directly reduced by certain ailments including bad back and frailty.

Any time a pawn's moving is reduced to below 15%, they become incapacitated and can no longer do anything. They can be rescued or captured at this point. An injured pawn may eventually recover on their own as the pain levels drop, although blood loss may prevent this or cause them to collapse again.

Manipulation

Main article: Manipulation

Manipulation is a pawn's capacity to perform any task with their hands. It is an important factor in almost every task a colonist can perform.

Anatomically, bipeds use their left and right arms for manipulation, and each side contributes its efficiency level to 50% of the manipulation stat. Total loss of a shoulder, arm, radius, humerus or hand will render that side totally useless and reduce the pawn's manipulation by 50%. Loss of a finger will result in about an 8% manipulation penalty per finger. For quadrupeds, manipulation is reduced by injury to their jaw instead. For both, injury to the spine will also reduce manipulation.

Consciousness applies a 1 for 1 multiplier on manipulation, so anything that affects consciousness (pain, brain damage, diseases, drugs, joywires, etc.) will also increase or reduce manipulation by the same amount. Manipulation is also reduced by ailments including bad back and frailty. Manipulation is modified by prosthetics including power claws, prosthetic arms, and bionic arms.

Talking

Main article: Talking

A character's capacity of speech. Directly affected by consciousness.

Eating

Main article: Eating

Eating is the capacity of biological pawns to consume food and is a major factor of Eating Speed. It is reduced by a damaged jaw. Even when missing a jaw a pawn can still eat, though at a reduced rate. A damaged or missing jaw can be replaced with a denture or bionic jaw

Breathing

Main article: Breathing

The ability of a character to breathe. Affects consciousness and movement.

Blood Filtration

Main article: Blood Filtration

A character's ability to fight off diseases. Affects consciousness and immunity gain speed.

Blood Pumping

Main article: Blood Pumping

Blood Pumping is an essential function provided by the heart. It directly influences the moving stat. A pawn whose blood pumping reaches 0% will die instantly.

Digestion

Main article: Digestion

Digestion is a pawn's ability to digest food and convert it to energy efficiently. The better a pawn's Digestion value, the less rest they will need. A pawn whose Digestion reaches 0% will die instantly.

Consciousness

Main article: Consciousness

Consciousness is a creature's ability to remain active, and in the case of your colonists, controllable. Blood loss, starvation and pain can have a serious effect on a creature's consciousness if they reach higher levels. Pawns below 30% consciousness will not wake up. When a medical operation is performed, anesthesia is induced, which renders the person unconscious until the effect of the anesthetic medication has worn off. This makes them incapable of moving, along with being incapable of leaving the bed.

Consciousness is directly influenced by Efficiency of consciousness source, Pain, Blood pumping, Breathing and Blood filtration. The formula is:

   E(C) = E(CS) * (1 - Clamp((Pain - 0.1) * 4 / 9, 0, 0.4)) * (1 - 0.2 * △E(BP)) * (1 - 0.2 * △E(Br)) * (1 - 0.1 * △E(BF))

where

 E(C) is the Efficiency of Consciousness
 E(CS) is the Efficiency of Consciousness source (e.g., the brain)
 Pain is the total pain
 △E(BP) = 1 - E(BP), E(BP) is the Efficiency of Blood pumping
 △E(Br) = 1 - E(Br), E(Br) is the Efficiency of Breathing
 △E(BF) = 1 - E(BF), E(BF) is the Efficiency of Blood filtration

From the fomula, we know that when total pain is below 10%, it makes no influence on consciousness. And when 10% <= pain <= 100%, the fomula can be simplified as:

   E(C) = E(CS) * [(Pain - 0.1) * 4 / 9] * (1 - 0.2 * △E(BP)) * (1 - 0.2 * △E(Br)) * (1 - 0.1 * △E(BF))

Pain

Main Article: Pain

Most biological creatures including colonists, raiders, and animals feel pain caused by injuries. A pawn's pain level ranges from 0% to 100% and is displayed on their Health tab's Overview. Pain levels are None, Little, Moderate, Severe, and Extreme.^{[Detail Needed]} Even a little pain causes unhappy thoughts. Once pain passes 10%, it'll start to have an effect on consciousness. If a pawn's pain level meets or exceeds their Pain Shock Threshold they'll go into shock, unable to move. Pawns with the Wimp trait will be incapacitated with only minor pain of 30%.

Most pain is temporary, but scars and certain diseases can cause long-term pain. A painstopper implant or the Painblock psycast will get rid of all a colonist's pain and negate any pain-related mood penalties. Note that colonists with the Masochist trait or an ideoligion with the Pain: Idealized precept get a mood bonus from pain instead of a penalty, so it's usually better to leave them alone.

Injuries to the artificial parts do not cause any pain, so colonists with a lot of bionics will generally incur less pain during combat.

Formula

Pain for a given pawn is the sum of the pain from each individual injury, with two extra steps at the end:

pain = pain / healthFactor for pawns with a healthFactor other than 1.0 (like grizzly bears and other large animals). Humans have a healthFactor of 1.0, so this doesn't impact humans
pain = pain * painFactor from health conditions which alter pain. This includes pain-reducing drugs like flake and yayo as well as anesthetic used during operations

Pain from an individual injury is the product of the severity of the injury (the number of HP missing for things like cuts and burns) and the pain per severity for the injury type. For example:

30 burn damage causes 30 damage × 0.01875 pain per severity = 56.25% pain
30 cut damage causes 30 damage × 0.0125 pain per severity = 37.5% pain

For the complete table of pain vs damage, see Health Difficulties

Thresholds

Pain creates moodlets of different values at 4 stages depending on pain severity.

Level	Required Pain %	Mood Penalty (Default)	Mood Buff (Masochist)	Mood Buff (Pain:Idealized)
Minor	1%	−5	+5	+3
Serious	15%	−10	+10	+5
Intense	40%	−15	+15	+7
Mind-shattering	80%	−20	+20	+9

A standard pawn will go down upon reaching mind-shattering pain.
Pain inflicts a consciousness penalty that scales with the pain percentage after exceeding 10%. It conforms to the following equation: IF Pain[%] <= 10% THEN -0% ELSE -{(Pain-0.1)/2.25}[%] For example, 15% pain is 0.15 - 0.1 = 0.05 / 2.25 = 0.02 or 2% consciousness loss.

Graph

Factors

Base factors

Factors cause the game code to MULTIPLY pain X a number. Small numbers reduce pain a lot. Large numbers reduce pain a little.

Painstopper: ×0%
Painless persona trait : ×0%
Go-juice:
- High: ×10%
- Withdrawal: ×300%
Painblock psycast: ×10%
Yayo:
- High: ×50%
Luciferium:
- High: ×80%
Psychite tea:
- High: ×90%
Beer: (See also Offsets)
- Warm: ×90%
- Tipsy: ×80%
- Drunk: ×50%
- Hammerred: ×30%
- Blackout: ×10%
Psychic bond:
- Psychic bond: ×50%
Reduced pain: ×50%

Offsets

Offsets cause the game code to ADD OR SUBTRACT a number from the pawn's pain. Small numbers are less effective at reducing pain than large numbers. However, if the pawn only has a small amount of pain, an equally small offset will be totally effective at removing all pain. Positive numbers add pain. Negative numbers reduce pain.

Mindscrew: +20%
Sensory mechanites:
- Mild pain: +20%
- Intense pain: +60%
Blood rot:
- Extreme: +5%
Fibrous mechanites:
- Mild pain: +20%
- Intense pain: +60%
Muscle parasites: +20%
Gut worms: +20%
Malaria:
- Major: +30%
- Extreme: +30%
Luciferium:
- Withdrawal: +40%
Beer: (See also Factors)
- Blackout: +5%
Stoned on smokeleaf: −20%
Torture crown: +5%
Tox gas:
- Mild: +10%
- Moderate: +15%
- Severe: +25%
Hemogen craving:
- Minor: +5%
- Moderate: +10%
- Major: +15%
Inhumanization: −50%

Health tab

All creatures have a health tab, located above the pawn's inspect pane.

Overview tab

The first section lists the creature's type, gender and age. Hovering over this section will display the creature's exact age and date born.

Self-tend (turned off by default) allows a doctor to tend their own wounds, although with reduced efficiency.

The creature's bodily systems are listed here with their current effectiveness. Not all systems are found among all types of creatures (i.e. animals don't have Talking).

Operations tab

The Operations tab is only available for colonists, colony animals, and prisoners. Bills can be added here to request surgical operations.

Injuries

Listed here are the creature's health conditions and injuries. Implants, bionic parts, and prosthetics are also listed here. Hovering over an entry provides detailed information.

A red blood droplet indicates a bleeding injury. The size of the droplet indicates severity of the bleeding. Overall bleeding rate is listed at the bottom.

An open circle indicates a condition that needs tending, usually requiring periodic treatments before fully cured. A solid circle indicates the condition has been tended to.

A bandage icon indicates a treated injury. A white bandage indicates high quality treatment. Darker shades indicate lower quality treatment, more likely to result in scarring or infection. See Doctoring

Cold and Heat Injuries

Hypothermia: Causes a negative thought, and pawns will eventually lose consciousness.
Frostbite: Can cause limbs and fingers/toes to fall off.
Heatstroke: Causes a negative thought, and can affect consciousness and even set a pawn on fire.
Burns: Causes low-medium pain and creates a risk of infection.

Treatment

For most injuries, you can treat colonists with or without medicine (with typically better results if a medicinal substance is provided), and also have them lay in hospital beds or any other bed or sleeping spot assigned as a medical spot, though Hospital Beds further improve the chance of them being treated properly. Humans heal wounds at a base rate of 8 damage per day before bonuses.

Improper Treatment

Treating an injury poorly may result in scarring, reduced healing rate or infections.

Operations

Transplants

For missing internal organs, either a donor organ or an artificial equivalent can be used. Some diseases can be cured through a transplant. Artery blockages can be cured with a heart transplant and asthma can be cured with lung transplants. Be wary that your colonists may suffer mood penalties when you harvest an organ, with the "donor" will suffer a -30 mood penalty for over a week. See Human Resources for details and mitigation strategies.

Limb Replacement

From peg legs to bionic arms, you could either replace a colonists' missing limbs, augment them, or cruelly punish your enemies with peg legs out of spite. Bionic parts have a bonus to specific actions or movement. For example, a bionic leg will increase your colonist's moving speed by 12.5%. Having a second bionic leg will increase the speed further by 12.5%, so having both right and left bionic legs will increase the speed by 25%.

Implants

You can install implants onto a natural part to improve its functions.

Implants are not mutually exclusive so you can have more than 1 per part.

Amputations

Limbs can also be removed due to health reasons. If an arm/leg becomes infected it can be amputated to save the person.

Version history

0.10.785 - Health tab now displays overall bleeding rate.
0.12.906 - Added way to enable/deny medicine in different qualities to any colonist, prisoner, or tame animal.
0.13.1135 - Sick people in bed can now watch TV

[1] Refers to whether or not the pawn will die if a system's capacity becomes 'None'

[2] Centipedes body rings are used for movement instead, since they don't have legs.

[3] Again, Centipedes body rings are used for work instead, since they don't have arms.

[4] Centipedes have no form of external communication. Scythers do have a neck though, and make some interesting sounds when incapacitated.

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