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The Implications of Immortality

What would an urban fantasy story be without some sort of immortal swooping in and taking over the story?

We all love immortality, living forever and witnessing the changes and advancements in society and the wider world. But there are some things authors don’t take into consideration when they romanticise life after death.

But wait, what is immortality?

In the shortest and most obvious sense, immortality is the ability to live forever — whether the person cannot age, change or die via mystical artefacts or wooden skewers is up for debate. In fiction, however, there are conditions and variables to this “living forever”.

When you make a character immortal, whether by vampirism, mystical artefact or God’s curse upon you, you need to first decide the conditions to your character’s inability to leave this rock. Such as:

  • Complete immortality: Your character just won’t die. Ever. Think God With A Capital ‘G’, you’ll just wander the earth for all eternity.
  • Retroactive immortality (my personal favourite): Your character can die, but won’t stay dead. Think Captain Jack Harkness, or Prometheus reviving overnight to have his liver eaten all over again at dawn.
  • Biological immortality: Eternally young, but still able to be beaten to a bloody pulp. Like the vampires in most fiction books, gorgeous but still able to bleed.
  • Purpose-driven immortality: You’re only immortal for one purpose, Kassandra, and that purpose is to pass the spear on to another person. And then your body crumbles to dust because you’re really two thousand years old.
  • Spare bodies: You’re immortal because you’re secretly the body thief from the Vampire Chronicles. Your spirit/soul/whatever will always come back in another body.
Skeleton Death

Now, I want you to think about how your character became immortal. Was it…?

  • A Fountain of Youth: Or another method of reversing the ageing process. A potion, a bath of infant blood, something that, if taken away, will render you mortal again. (Whether the ageing process will catch up with you is up for debate.)
  • Induced: Something which renders you immortal, and that I can take away to reverse the process. Have you placed your soul in a jar and hidden it in the Andes for invulnerability and immortality (and caused the jar to become your weak spot)? Or is your consciousness routinely placed in different bodies, or a machine (Hello, Zemo)? Have you partaken of the Elixir of Life to regain your life-force, health, or your youth?
  • Taken: You take the life-force of someone else to sustain yourself. Vampires, succubi and incubi, all those who drink blood or have sex with you only to take your breath (or life) away.
  • Given: Someone has granted you immortality, but is it a continuous visitation to maintain your immortal state or a onetime deal? And what are the consequences? Because, believe me, darlings, there will be consequences.

Also, for your consideration:

But what if something went wrong with the immortality process? Or you’re only immortal through your legacy.

Think about it. Reality ensues, and your eight-hundred-year-old vampire looks like a mummy. Or your zombie acts like a zombie because reality happens and you’re a bloated, brain-dead, decaying corpse.

Reality can also happen in that your immortal mental state will decay. Memories fade, and unless it’s a prominent and traumatic memory, your character won’t remember much of his youth. He will also lose his marbles a bit, because, let’s face it, humanity’s not the best at niceties and his age is taking its toll.

In terms of an immortal legacy, there are a few options. Consider if your character wants to preserve someone else’s legacy, like the Jack the Ripper copycats, or if it’s a master-apprentice chain taking the same names to create a legend (so the Master trains the Apprentice, then the Apprentice becomes Master, and Master trains the Apprentice, or the Immortals of Persia, who were an elite branch of the military). Or if your legacy is because you were such a dirtbag in life, people still talk about you after they have buried you for four hundred years. Or, like in Coco, you thought you died from eating a chorizo (which is a euphemism, I discovered, for male genitalia), and nobody will let you live it down.

Want to find out more about how living forever affects real life? Read this article for the implications of immortality. Click To Tweet

And now we can get to the science!

I’ll start with biology, and the usual disclaimer of “I’m not a scientist, I just research binge”. Okay, so genetics are the things which make your appearance what it is, and susceptible to certain diseases and other such horror stories. But they also determine energy production, and most importantly, cell reproduction. Your genes are the coding to your body’s function, like how your computer knows what to do.

What this means is that if your immortal is forever at the age he was when he died, then how do his cells reproduce? A fountain of youth might reset the clock, but does he then have to relearn things because his brain no longer maintains those neural pathways? If your immortal has cancer or a genetic predisposition, how does the immortality impact this?

Too much? Okay, I’ll move on.

Do you want to know what the consumption of human blood does to the human body? Live Science tells me it could kill us. But vampires, I hear you scream. And I’m telling you: diseases transmitted through bodily fluids. But mainly that blood contains iron. We know this. But in high amounts, such as a wine glass, our body cannot extract it. This is haemochromatosis, or iron poisoning, and it causes liver damage, a build-up of fluid in the lungs, dehydration, low blood pressure, and nervous disorders.

And I shall end with the mundane worries. This is my speculation, so I could be wrong. I get that interest and money could be a good thing. But you’d be committing fraud when you buy a new house (name, age, date of birth), or you might end up paying inheritance text when you “inherit” your “grandfather’s” house. And how do you pay the bills for electricity and water? I’m assuming more fraud, or your fictional city-within-a-city has re-routed some pipes and has pre-established houses in an estate.

What’s the lesson of all this?

Well, firstly, there isn’t really one implication of immortality. Immortality comes in many shades. So you need to think about how your character became immortal and what the conditions and consequences are. And explain them in-story, so we’re not left wondering how Jeff is immortal. Or why there’s a duo of idiots running around Gotham in it’s-not-spandex-it’s-body-armour.

And secondly, you need to think about the real-life implications and complications of immortality. Think of the conflict and drama it could bring!

  • Humans did not evolve to extract iron from the blood, we will die of iron poisoning.
  • Genetic mutations may complicate immortality.
  • How the hell does your immortal have a house? Did he commit fraud?

Now, go forth and think about the implications of immortality.

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