My obsession with useless information and looking things up.

Thursday, July 17, 2008

Human Hibernation

Learned: A minute ago, just another one of the useless things I was thinking about.

Everyone knows what hibernation is, and that it occurs in animals such as squirrels and bears (most commonly known.) But could it/has it ever happened in a human?

Technically, hibernation is a reduced metabolic rate, a decrease in body temperature, and slowed heart rate, all for the purpose of conserving energy over a long period of time, in which the organism undergoing hibernation "sleeps."

Humans, obviously, don't have the need or ability to hibernate naturally. However, after researching this topic, it seems that there have been a few occurrences where something similar to hibernation occurred in a human.
A child in Alberta Canada wandered out into her yard in the middle of February and disappeared in the snow. When she was found some hours later, she was clinically dead. Her heart had stopped beating nearly two hours before and her body temperature dropped to 60F. Other sources say that she had a slow pulse of 30 bpm but no blood circulation whatsoever. Either way, dead.
She, miraculously, was revived at the hospital. She had severe frostbite, but no amputations were necessary and she made a full recovery.

Another man from Japan "fell asleep" in the snow and was found 23 days later in a denned/hibernated state. He also made a full recovery. (When I say he fell asleep in the snow, he literally and purposely laid down on a mountainside to take a nap.)

Considering that there are only two known/documented occurrences of human "hibernation," it's safe to say that generally, human hibernation does not occur. Most people who fall asleep on a mountain for 23 days will freeze to death. People who have severe drops in body temperature and no heartbeat for two hours are usually dead. Forever. Or for a hot minute until their souls travel to be with Jesus, or whatever your beliefs are.

But, I wonder, is there a way to induce hibernation in humans?

According to the interwebz, a hibernation induction trigger (HIT) is found in the blood of a hibernating animal. Scientists have taken the blood from a hibernating squirrel and injected it into a squirrel in the middle of the summer. That squirrel went into premature hibernation shortly thereafter.
The life of a pig's heart, isolated from the rest of the pig's body, was able to be prolonged through HIT.

WHICH MEANS of course that crazy Americans are doing lots of crazy experiments at even crazier places such as NASA in the hopes that HIT can be used on astronauts someday for travel to distant stars, etc.
It also means that HIT could potentially save people with fatal illnesses by "putting them to sleep" and decreasing the activity of their internal organs long enough for doctors to come up with a treatment.

Chemically, HIT is classified as an opioid... like morphine and heroin (which might explain why heroin overdoses can put a person into a coma.)

Does this make bears drug addicts? I think yes. MAYBE after they wake up from their drug-induced coma, I mean their hibernation, they go through a sort of withdrawal period. This would explain bear attacks on sleeping humans in their tents in the middle of the night. The poor bears are looking for a fix of something they can't identify.

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