Pathological Reflexes: Hyperventilation & Main Primitive Reflexes

A reflex is an involuntary and almost instantaneous (muscular) reaction in response to a stimulus. Among all primitive and pathological reflexes, hyperventilation is the main primitive reflex of the nervous system. This autonomic pathological reflex is highly prevalent these days in a chronic form: chronic hyperventilation is present in over 99% of subjects with diseases.

Minute ventilation rates (chronic diseases)

Condition	Minute ventilation	Number of people	All references or click below for abstracts
Normal breathing	6 L/min	-	Medical textbooks
Healthy Subjects	6-7 L/min	>400	Results of 14 studies
Heart disease	15 (±4) L/min	22	Dimopoulou et al, 2001
Heart disease	16 (±2) L/min	11	Johnson et al, 2000
Heart disease	12 (±3) L/min	132	Fanfulla et al, 1998
Heart disease	15 (±4) L/min	55	Clark et al, 1997
Heart disease	13 (±4) L/min	15	Banning et al, 1995
Heart disease	15 (±4) L/min	88	Clark et al, 1995
Heart disease	14 (±2) L/min	30	Buller et al, 1990
Heart disease	16 (±6) L/min	20	Elborn et al, 1990
Pulm hypertension	12 (±2) L/min	11	D'Alonzo et al, 1987
Cancer	12 (±2) L/min	40	Travers et al, 2008
Diabetes	12-17 L/min	26	Bottini et al, 2003
Diabetes	15 (±2) L/min	45	Tantucci et al, 2001
Diabetes	12 (±2) L/min	8	Mancini et al, 1999
Diabetes	10-20 L/min	28	Tantucci et al, 1997
Diabetes	13 (±2) L/min	20	Tantucci et al, 1996
Asthma	13 (±2) L/min	16	Chalupa et al, 2004
Asthma	15 L/min	8	Johnson et al, 1995
Asthma	14 (±6) L/min	39	Bowler et al, 1998
Asthma	13 (±4) L/min	17	Kassabian et al, 1982
Asthma	12 L/min	101	McFadden & Lyons, 1968
COPD	14 (±2) L/min	12	Palange et al, 2001
COPD	12 (±2) L/min	10	Sinderby et al, 2001
COPD	14 L/min	3	Stulbarg et al, 2001
Sleep apnea	15 (±3) L/min	20	Radwan et al, 2001
Liver cirrhosis	11-18 L/min	24	Epstein et al, 1998
Hyperthyroidism	15 (±1) L/min	42	Kahaly, 1998
Cystic fibrosis	15 L/min	15	Fauroux et al, 2006
Cystic fibrosis	10 L/min	11	Browning et al, 1990
Cystic fibrosis*	10 L/min	10	Ward et al, 1999
CF and diabetes*	10 L/min	7	Ward et al, 1999
Cystic fibrosis	16 L/min	7	Dodd et al, 2006
Cystic fibrosis	18 L/min	9	McKone et al, 2005
Cystic fibrosis*	13 (±2) L/min	10	Bell et al, 1996
Cystic fibrosis	11-14 L/min	6	Tepper et al, 1983
Epilepsy	13 L/min	12	Esquivel et al, 1991
CHV	13 (±2) L/min	134	Han et al, 1997
Panic disorder	12 (±5) L/min	12	Pain et al, 1991
Bipolar disorder	11 (±2) L/min	16	MacKinnon et al, 2007
Dystrophia myotonica	16 (±4) L/min	12	Clague et al, 1994

Note that breathing more air at rest reduces oxygen levels in cells of the body.

During evolution of life on Earth, most of the time our lungs were developing and evolving in conditions when the CO2 content in outer air was very high: up to 7-12% during the first stages of lung development in primitive creatures living 2-3 billion years ago. Oxygen content in primitive air was very low (about 1% or less during the first stages of evolution before and after appearance of green cells with chlorophyll). During these stages of evolution the process of control of breathing by the autonomic nervous system was also developed. Since this primitive air had very little O2 and high CO2, our evolutionary predecessors could get more oxygen in tissues only by breathing more. Therefore, breathing more air in the past was beneficial for survival.

Composition of air in atmosphere (past and now) and cells of the human body

 

Any stressful situation, fight, flight, search for food, digestion, mating, playing, and any other activity required more oxygen. How? By breathing more. Hence, hyperventilation became the most fundamental primitive reflex of the autonomic nervous system, as soon as first lungs (or prototypes of human lungs) appeared on Earth. Only totally peaceful, stress-free rest had low metabolic rates when heavy breathing could not provide any advantages for survival.

Effects of air changes on pathological reflexes

However, the modern air composition is very different: modern air is hyperoxic (too much oxygen as leading respirologist agree) and almost no CO2. Therefore, from being advantageous, hyperventilation became the main pathological reflex since it reduces O2 levels in body cells. It is unlikely that there are any other equally destructive pathological reflexes.

This pathological reflex to hyperventilate is now more fundamental for humans than all other pathological reflexes, instincts and drives: to drink, eat, mate, and other primitive reflexes. Why is it so? This is because when the human baby is born, the first things it starts to do is to breathe deeply as if expecting that air has very little O2 and a lot of CO2. (All developing or survived human cultures and tribes have used swaddling of infants to ensure their survival and good health, as we discussed before.)

Most sick people (over 90%) die due to the same pathological reflex of the autonomic nervous system: hyperventilation. This primitive reflex again gains control over the human brain and autonomous nervous system during last days/weeks of life. As a result, the dying sufferers frantically gasp for more air, as if expecting to get more oxygen (see Heavy Breathing Pattern - Highest Mortality Rates). Hence, hyperventilation is the main among in-built primitive pathological reflexes of the autonomous nervous system.

For the list of the quoted references click here.

Reference pages: Breathing norms and medical facts:
- Breathing norms: Parameters, graph, and description of the normal breathing pattern
- 6 breathing myths: Myths and superstitions about breathing and body oxygenation (prevalence: over 90%)
- Hyperventilation: Definitions of hyperventilation: their advantages and weak points
- Hyperventilation syndrome: Western scientific evidence about prevalence of chronic hyperventilation in patients with chronic conditions (37 medical studies)
- Normal minute ventilation: Small and slow breathing at rest is enjoyed by healthy subjects (14 studies)
- Hyperventilation prevalence: Present in over 90% of normal people (24 medical studies)
- HV and hypoxia: How and why deep breathing reduces oxygenation of cells and tissues of all vital organs
- Body-oxygen test (CP test) : How to measure your own breathing and body oxygenation (two in one) using a simple DIY test
- Body oxygen in healthy: Results for the body-oxygen test for healthy people (27 medical studies)
- Body oxygen in sick : Results for the body-oxygen test for sick people (14 medical studies)
- Buteyko Table of Health Zones: Clinical description and ranges for breathing zones: from the critically ill (severely sick) up to super healthy people with maximum possible body oxygenation
- Morning hyperventilation: Why people feel worse and critically ill people are most likely to die during early morning hours

References: pages about CO2 effect:
- Vasodilation: CO2 expands arteries and arterioles facilitating perfusion (or blood supply) to all vital organs
- The Bohr effect: How and why oxygen is released by red blood cells in tissues
- Cell oxygen levels: How alveolar CO2 influences oxygen transport
- Oxygen transport: O2 transport is controlled by vasoconstriction-vasodilation and the Bohr effects, both of which rely on CO2
- Free radical generation: Reactive oxygen species are produced within cells due to anaerobic cell respiration caused by cell hypoxia
- Inflammatory response: Chronic inflammation in fueled by the hypoxia-inducible factor 1, while normal breathing reduces and eliminates inflammation
- Nerve stabilization: People remain calm due to calmative or sedative effects of carbon dioxide in neurons or nerve cells
- Muscle relaxation: Relaxation of muscle cells is normal at high CO2, while hypocapnia causes muscular tension, poor posture and, sometimes, aggression and violence
- Bronchodilation: Dilation of airways (bronchi and bronchioles) is caused by carbon dioxide, and their constriction by hypocapnia (low CO2)
- Blood pH: Regulation of blood pH due to breathing and regulation of other bodily fluids
- CO2: lung damage: Elevated carbon dioxide prevents lung injury and promotes healing of lung tissues
- CO2: Topical carbon dioxide can heal skin and tissues
- Synthesis of glutamine in the brain, CO2 fixation, and other chemical reactions
- Deep breathing myth: Ignorant and naive people promote the idea that deep breathing and breathing more air at rest is beneficial for health
- Breathing control: How is our breathing regulated? Why hypocapnia makes breathing uneven, irregular and erratic.

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