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Think of cutting off a major road. Cars will just start driving off onto other roads (blood will divert into other arteries) . Some cars may start driving across fields and make "new roads" (i.e. your body will make more blood vessels).

The left right brain idea is not only a myth as u/BlackHoleHalibut points out, but evidence has shown pretty paltry (if applicable) difference between women and men skillwise (in practice) and biology-wise. Things that were accepted as the norm back then (ie women being bad at math) were shown in later years as more women got into university were found to be negligible. Environment plays a great role in the manifestation of certain traits - socialization (it's generally accepted or expected women to be more social or emotional, while boys are taught to sublimate their emotions in different ways), something called the self-fulfilling prophecy or an expectation coming true cause the people it pertains to make it happen in part cause they are convinced it's inevitable. That isn't to say there aren't cases where gender presentation is different. Schizophrenia tends to manifest less severely in women and later in life - though in part due to the protective factor (something that helps manage a trauma or disease) that is estrogen. Women have been documented more at risk of developing Alzheimer's but the reasoning is still being researched.

As numbers get close to 100% we have a tendency to think of them as much the same and sometimes miss something important.

Let's look at the numbers based on who hasn't tested positive for EBV.

5% in the general population 0.1% in the population with MS

This is a ratio of 50:1 which doesn't seem likely to be meaningless to me.

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Maybe when it comes to choking yourself, the cons outweigh the pros. You aren't so fixated on happy chemicals that you're sitting there asphyxiating for pleasure, right? So why would any other humans do it?

The gene would only evolve away with certainty if it affected survival, which would require a large part of the population to have choked themselves for fun and died from it until there were a few people who didn't enjoy it and therefore didn't die.

It takes an off-ramp from the highway, down some streets, into the laneways, drops off it's parcel of oxygen, then makes it's way back up to another highway back to the heart.

There are loads and loads of little streets.

I was a licensed veterinary technician for a specialty surgical practice. What got me the first few limb amputations was for some reason I though that a blood transfusion would benefit the dog or cat. They lost a fair amount of blood because the limb is now gone that contained that blood.... smh makes me laugh now.

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Close but not precisely. Think of it like a road system. Whdn You drive off a highway going north, You don't use the same way to go south. You need to drive to a smaller road to later rejoin increasingly larger roads until You enter the main flow from another side.

In ither words arteries branch off into increasingly smaller vessels up to the capillaries, then those collect into bigger and bigger veins

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Fascinating. I guess this answers a question I've had for a long time about how amputation works. I always assumed that during, for example, a leg amputation, the arterial system was like a 1-way highway for blood that went around your body in a circle, and into your leg and back out (with various exits and off-ramps for blood to go to your tissue), and you would have to connect the two halves of the pipe system if the connection was severed. But now it seems obvious that there is no "back out", or at least not a "back out" artery. It goes from the arteries to your tissue, and then it goes out through veins, right?

Yes, arteries take oxygenated blood to the body and veins return deoxygenated blood to the lungs/heart.

But it isn't like a loop where at some point it becomes a vein. The artery splits and branches like plant roots until it's down to the scale of arterioles, tiny vessels which actually spread the oxygenated blood throughout your tissues via capillaries.

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Yup. Kinda. If you have two copies of the ccr5 delta 32 you can come into contact with hiv but it can’t get past the ccl5 and GP120 due to the mutation. Less protection with 1 copy. There’s still research on any negative impacts this mutation might cause.

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The vast majority of people who might potentially get enjoyment out of the practice will never know it because they will never try. Evolutionary speaking, 99.9% of people over 99.9% of human history have been too busy surviving to experiment with how they can *almost* kill themselves for fun.

All the cases I heard from where people died after doing this, the person was very bored, without purpose in life, and mentally ill.

Yogis have been intentionally asphyxiating themselves for thousands of years. It brings a lot of health benefits, namely carbon dioxide tolerance, when done mindfully.

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aren't arteries like some one-way streets? Blood can flow in both directions?