Does heaven exist? With well over 100,000 plus recorded and described spiritual experiences collected over 15 years, to base the answer on, science can now categorically say yes. Furthermore, you can see the evidence for free on the website allaboutheaven.org.

Available on Amazon
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This book, which covers Visions and hallucinations, explains what causes them and summarises how many hallucinations have been caused by each event or activity. It also provides specific help with questions people have asked us, such as ‘Is my medication giving me hallucinations?’.

Available on Amazon
also on all local Amazon sites, just change .com for the local version (.co.uk, .jp, .nl, .de, .fr etc.)



Category: Illness or disabilities



Introduction and description

Hypoxia is the posh name for oxygen deprivation, although this is simplifying things a little. 

It is “a pathological condition in which the body as a whole (generalized hypoxia) or a region of the body (tissue hypoxia) is deprived of adequate oxygen supply”.

There are all sorts of ways in which one can suffer from oxygen deprivation  -  from asphyxiation; from smoke inhalation or steam inhalation; from drowning; from gas inhalation; from winding or being winded;  from forms of breathing such as hyperventilation;  from going up high mountains where the air is thin; from ballooning at high altitude; from parachuting from high altitudes; even anaemia can give you hypoxia; and the list could go on.

Hypoxia can occur when breathing mixtures of gases with a low oxygen content, e.g. while diving especially when using closed-circuit rebreather systems that control the amount of oxygen in the supplied air.

And hypoxia can give you a spiritual experience.

Hypoxia in which there is complete deprivation of oxygen supply is referred to as anoxia, this generally kills you


One of the side effects of prolonged hypoxia is lactic acidosis.  Most cells in the body normally burn glucose to form water and carbon dioxide. This is a two-step process. First, glucose is broken down to pyruvate through glycolysis. Then, mitochondria oxidize the pyruvate into water and carbon dioxide. This second step requires oxygen. If there is not enough oxygen the cycle is disrupted. 

If oxygen supply is inadequate, excess pyruvate is produced, which is converted into lactate and released from the cell into the bloodstream, where it accumulates over time.

Hypoxia causes both buildup of lactate and acidification.  The symptoms, of lactic acidosis are

  • Nausea
  • Vomiting
  • Hyperventilation - to remove CO2
  • Abdominal pain
  • Lethargy
  • Shock
  • Hypotension
  • Irregular Heart Rhythm
  • Tachycardia

Brain tissue ceases to function if deprived of oxygen for more than 60 to 90 seconds and after approximately three hours, will suffer irreversible injury possibly leading to death of the tissue.  Hypoxia can also lead to permanent damage of a number of organs – the liver, the heart, the kidneys and so on.  More details of this process can be found in the science section under Brain and organ damage from hypoxia

How it works

Hypoxia is a major provider of spiritual experiences - albeit often unwanted ones


Hypoxia can damage a whole host of bodily organs but these side effects may only have an impact on a long term basis.  The immediate effect of hypoxia is on the brain.  If you want to find out if you are hypoxic you can use instruments - see Hypoxia instruments to measure the hypoxic state.

Oxygen is being diverted from the brain.  This means the brain is starved of ‘power’.  If a computer is starved of power the functions start to deactivate – some programs simply do not run and this is what is happening here.

A brain deprived of oxygen which is in effect gradually shutting down will revert to the key functions – the ones it needs to survive – breathing, and so on.  If we use the analogy, the computer of our brain has reverted to running the operating system and not much more.

One of the odd side-effects of hypoxia, is a form of euphoria, bliss and feelings of pleasure.  Considering that you are in effect slowly dying, this would seem a most odd effect to induce.  As George Shuman said in his novel ‘Last Breath’:

 “When the brain is deprived of oxygen, it induces a lucid, semi-hallucinogenic state called hypoxia….. the rush is said to be ….. highly addictive


And it is addictive because the body releases huge quantities of Endorphins – the opioids of the body.  The Will can see that we are probably not going to be capable of rescuing ourselves from the situation, so it does its best to set in motion all the things that might make the experience more bearable.

Where oxygen deprivation is severe, the input from the senses becomes irrelevant as the autonomic system fights for survival.

Thus during any form of acute hypoxia we are essentially dying and  because we are ‘dying’ the body reverts to only essential functions.


It may be helpful now to refer to the Model of the Mind and to have read the generic description of How spiritual experience works.

Much of our  Reasoning and Memory are not essential functions.  Thus these two functions are actually suppressed. 

What takes the place of these functions is an overwhelming input of messages from the sensory systems – all of them – that says HELP HELP HELP – we are being deprived of oxygen – all of us, we are dying DO SOMETHING. 

But the Will, is unable to do something – it has no learnt function with which to counter the Threat and it is struggling all the time to ensure the Autonomic systems keep going.

Eventually the Will exhausted by the battle, gives in and the Composer takes over and we have our spiritual experience – which may happen just shortly before we die!


The majority of the observations are described within the very specific types of hypoxia being experienced, such as carbon monoxide poisoning or smoke inhalation, however, some miscellaneous observations are also provided here

Related observations