Prehistoric Evolutionary Benefits of Cannabis

     Ananamide is a chemical that is naturally made in the brain and is used as a neurotransmitter. It regulates memory , pain and pleasure.

    Often called the chemical responsible for a "runners high", Ananamide is a chemical very similar in structure to Tetrahydrocannabinol or THC, the main psychoactive chemical in cannabis. THC is what gives marijuana users the "high".[1]
    The THC Dilates the air passages in your lungs, thus making breathing easier.[2] When consumed, some of the THC dissolves in human's fat tissues. [3]
    Before explaining how this could have helped prehistoric man, I will show a story of a marijuana user's experience while running "high".
  I run straight after a good smoking session when I'm extremely high and it's fine.  Running high is great, I often forget i'm running, and I tend to be able to run further whilst high compared to when I am sober. The breathing and heart rate whilst high has been on my mind now and then, so I definitely keep a look out for that but so far I've been fine and I've been running for quite awhile now.

    When humans would consume cannabis, They would first have an increased appetite, which will lead them to want to hunt down food, then they'll have an increased ability to breath, useful when chasing down fast prey.

    So Often when hunting prey, the human would have to run for a mile or so until the animal got tired and gave up. When you run, after a certain point of time your body switches to burning your fat for energy.

   So when a Human is running long distances their body will release the dissolved THC into the blood stream and give a human an increased performance. Studies have shown exercise increases plasma concentrations of THC.[4] Cannabis has even been shown to protect the heart in low doses.[5] This "THC Performance Storage", could have helped prehistoric man hunt down deer without much care, or pain.

[1] http://bjsm.bmj.com/content/38/5/536.abstract
[2] http://www.ukcia.org/research/SmokedAndOralInAsthmatic.php
[3] http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2782342/
[4] http://www.sciencedirect.com/science/article/pii/S0376871613002962
[5] http://www.ncbi.nlm.nih.gov/pubmed/23537701

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