Explanation for spontaneous human combustion

What is spontaneous human combustion?

Spontaneous human combustion is the process of a human body catching fire. As a result of heat generated by internal chemical action. What could be an explanation for spontaneous human combustion

Personal accounts of SHC

Many people have felt as if they were about to explode, or that their bellies were on fire. But so far there are no accounts of anyone suddenly bursting into flames due to a case of spontaneous combustion originating within the body. It is true that many people have suddenly exploded or suddenly burst into flames. Although these cases are all traceable to unfriendly fire from without. The very idea of a living animal, human or otherwise, igniting from spontaneous combustion in the stomach or anywhere else in the body is ludicrous and preposterous. Perhaps that explains why stories of spontaneous human combustion abound in books about “mysteries.”


Skeptics do not think there are any good documented cases of SHC. But we admit that there are many stories and anecdotes. They claim that at least a couple hundred human beings or human corpses have spontaneously combusted. Many of the stories have been related by police investigators. The stories are about policemen who have been perplexed by partially ignited bodies near unburnt rugs or furniture. “What else could it be?” they ask. Indeed, what else? Well, how about self-ignition due to dropping a lit cigarette? Or ignition due to another person putting the match to a person or place. Many of the allegedly spontaneously combusted corpses are of elderly or overweight people who may have ignited themselves accidentally.

The human body 

The physical possibilities of spontaneous human combustion are remote. The human body mostly consists water. Aside from fat tissue and methane gas, there isn’t much that burns readily in a human body. To cremate a human body requires enormous amounts of heat over a long period of time. To get a chemical reaction in a human body which would lead to ignition would require some doing. The ignition point of human fat might be low, but to get the fire going would probably require an external source. 

Needle in a haystack

Consider the following situation: If the deceased had recently eaten an enormous amount of hay. Hay that was infested with bacteria. In that case enough heat might be generated to ignite the hay. Although not much besides the gut and intestines would probably burn. Or, if the deceased had been eating the newspaper and drunk some oil. Subsequently was left to rot for a couple of weeks in a well-heated room, his gut might ignite.

I imagine that the reason some of these burnt bodies appear so strange. It has more to do with the difficulty of burning a human corpse than with spontaneous human combustion. That a fire should burn some things and not others. That it should appear to have started from inside the body. Or that there be no other evidence of foul play besides a smoldering corpse. It doesn’t imply that the most reasonable explanation is spontaneous human combustion.

Explanation for spontaneous human combustion: speculation

There may be many things we can’t explain because we don’t have enough information. In such cases, it does not seem beneficial to speculate unless there is some substance to our speculation. Has anyone tried to get a corpse to spontaneously combust? Are there any coroners out there who have seen this happen? If so, where are their reports? Is there a universal conspiracy of coroners to hide from the public this vital information! You’d think that if human corpses spontaneously combusted at least one coroner somewhere on the planet would have seen one.

Selective combustion?

Why do corpses only spontaneously combust for police officers, especially British bobbies?

There are a few other curious things about spontaneous human combustion that should be considered. Fire burns at over 200 degrees F. The human body, when alive, is usually under 100 degrees F. A corpse would tend to cool off to room temperature. If a living being ever spontaneously combusted, the warning signs would be phenomenal: a 212 degree F. burning sensation! 

Combustible situation

If a corpse self-ignited it would be hard to keep it burning. Unless the room were very, very hot. In fact, the room would have to be nearly on fire itself to keep the corpse ignited. Once a fire has started, it will be self-supporting. The condition would be that if the temperature created by the combustion of the burning substance is as high or higher than its ignition point. 

A cool body in a cool room would probably do little more than smolder a little bit if it did self-ignite.

A painting of a bobby in Victorian times

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