Where you come from -- be it your hometown, home state, home country, or home planet -- has a big influence on everything from your physical health to your mental well-being to your opinion on the acceptability of wearing Crocs and a bath towel to church. Of course, sometimes where you come from also subjects you to bizarre mental or physiological abnormalities which seem to defy any logical explanation, causing science to shrug its collective shoulders and take the rest of the afternoon off. For example ...

Got PMS? It's Probably Because You're From The West

Unexplained Things That Only Happen In A Few Places On Earth
Eva Katalin Kondoros / iStock

Premenstrual syndrome is responsible for more anguish and hacky jokes than probably any other syndrome in existence. First, there are the aches and pains that are a body's way of throwing a tantrum because someone selfishly decided not to launch a smallish human through their naughty bits that month. Then there's the irritability and mood swings which comedians compare to everything from demon possession to schizophrenia. PMS is an easy excuse men everywhere can use to dismiss any female anger. "Ah, must be that time of the month!"

Unexplained Things That Only Happen In A Few Places On Earth

"It has to be your babymaker. Otherwise, I might be the problem, and that can't possibly be right."

Well, not "everywhere." PMS -- that is, the part where women turn into uncontrollable rage-monsters -- only affects women in Western society.

Anthropologists and psychologists increasingly view PMS as a culture-bound syndrome. This means it's a psychosomatic condition that only occurs within a particular culture -- in this case, Western culture. Sure, women in all times and places have had the physical symptoms ... but not the emotional/psychological ones. In fact, none of the hormonal changes that take place should influence mood at all -- a 2012 meta-analysis of published research found zero correlation between "PMS symptoms" and the actual premenstrual phase of a woman's cycle.

Unexplained Things That Only Happen In A Few Places On Earth
Ekem / Wiki Commons

It's an egg, not a time bomb.

Experts believe that those symptoms may be an expression of the frustration caused by the expectations put on women in Western society. Specifically, the expectation that they be both productive and reproductive members of said society. Women already get tagged with the "hysterical" label if they express emotion in the workplace, so PMS becomes an "express your frustrations for free" card. She didn't call the guy in the next cubicle a dick because she has PMS -- she did it because she does indeed think he's a dick. Saying, or even thinking, that it's the PMS talking is a way to give herself permission to express it.

That's their best guess, anyway.

Unexplained Things That Only Happen In A Few Places On Earth
Wavebreakmedia / iStock

The freedom to rip up his shitty budget plans is positively intoxicating.

To be absolutely clear, they are not saying that PMS is a big scam by Western women to call people dicks once a month with impunity. It's just that everyone conforms to society's expectations to a degree, especially when they give us an opportunity for the kind of release we should have all the time. Slip somebody a nonalcoholic drink and tell them it's full of liquor, and after an hour they'll be running around with their pants on their head. Beyond the placebo effect, you're mainly giving them a chance to let go for a bit.

Every culture has their old wives' tales about how to live longer -- drink eight glasses of water a day, laugh frequently, consume the blood of the innocent. But no one knows for sure why only a lucky few live to an almost supernaturally long age. Hitting the triple digits seemingly happens at random.

Except, that is, on the remote Italian island of Sardinia, where it's practically a given that you'll live past 100. Sardinia's rate of centenarians (people over age 100, not bore-headed mythological creatures) is twice that of the rest of the world. Scientists have attributed the island's fountain of youth to everything from an undiluted gene pool to their pure and simple diet of foods like red wine, fresh olive oil, and organic vegetables -- this latter explanation helped kick off the Mediterranean diet craze.

Unexplained Things That Only Happen In A Few Places On Earth
Jake Whitman / Today

These men are 90 years old, drunk as fuck, and can kick your ass without breaking a grape-scented sweat.

But clearly, it's more than the food, because people around the world eating like Sardinians has mainly resulted in more wine headaches and exactly as many people dying in their 70s. There is no consensus as to why Sardinians live longer than the rest of us. It's a freak occurrence that only happens in one place.

But wait, it also happens in Okinawa, Japan. Nicknamed the "land of the immortals," the city of Okinawa formerly had the highest percentage of centenarians in the world, before being booted off the top of the mountain by Sardinia. Not only do people in Okinawa live longer, but compared to Americans, they have lower rates of dementia, Alzheimer's, and hip fractures. But the average American eats way more Moons Over My Hammys, so it feels like an even trade.

Unexplained Things That Only Happen In A Few Places On Earth
Blake Patterson / Flickr

At least until the super-dementia kicks in and we forget how to eat.

And speaking of Americans, we too can hop on this longevity bandwagon -- but only if we live in the city of Loma Linda, California. Located in San Bernardino County, Loma Lindans regularly live into their 90s and beyond, easily outliving their neighbors in the San Bernardino-Riverside metro area. And Loma Linda has roughly the same median income and racial makeup as said metro area, ruling out genetic and economic factors. Researchers do, however, have some idea as to why its residents live longer, and you could say it's because they pray for good health.

See, Loma Linda was founded in the 19th Century by the Seventh-Day Adventist Church. In addition to proclaiming that the rest of the world goes to church on the wrong day of the week, the religion encourages a plant-based diet and discourages smoking and drinking. The big supermarket in town doesn't even sell meat, seafood, or anything that contains caffeine. So maybe they have discovered the secret to long life, but the rest of us have decided it isn't worth it.

Quest Network

On the other hand, Sardinia's secret -- booze and isolation -- sounds right up our alley.

Meanwhile, on the opposite end of the spectrum ...

Glasgow And Las Vegas Are Depressing Their Residents To Death

WikiMediaImages / pixabay

In addition to being the birthplace of Gerard Butler and two members of AC/DC, Glasgow, Scotland is also noteworthy for having a mortality rate that is significantly higher than similar UK cities (it is unclear whether these two distinctions are related). One in four Glasgow men never reach their 65th birthday, with the majority of excess deaths being caused by "drugs, alcohol, suicide, and violence," or "not gently in their sleep." Despite numerous studies, this phenomenon, known as the Glasgow Effect, has everyone completely stumped.

Unexplained Things That Only Happen In A Few Places On Earth
Warner Brothers Pictures

He didn't act in 300. He did what does every day, only this time while wearing a cape.

Scientists examined everything from Glasgow's weather to Scottish people's penchant for diving headfirst into coin vaults. But Glasgow's weather isn't unique within the UK, and the coin vault thing is sadly specific to wealthy Scottish ducks. One assumption is that the woes of Glaswegians (we didn't make that up) are related to the city's struggling economy, yet residents in similarly unemployed cities like Liverpool and Manchester live 30 percent longer.

More left-field theories range from Glasgow being the center of an epidemic-level vitamin D deficiency to the fact that Scottish people die sooner because ... they're Scottish. Specifically, because Scottish culture tends to produce cantankerous, pessimistic bastards. This explanation is troubling, as it means that even if you move away, the early-death time bomb is still ticking away in your psyche.

Unexplained Things That Only Happen In A Few Places On Earth
David Newell Smith/The Observer

Post-Shithole Stress Syndrome affects ten out of every ten salty Scottish dogs.

Here in the good ol' USA, we have our very own depressing-to-death city: Las Vegas, which has the highest suicide rate of any city in America. While one-to-two odds in Vegas are normally unheard of, unfortunately you're twice as likely to die by suicide there than anywhere else in the U.S. But unlike Glasgow, whose malaise seems to follow its residents no matter where they go, simply being in Vegas is what's driving people to cash in their chips. Lifelong Vegas residents who leave the city briefly see a significantly reduced risk of suicide, while tourists visiting Vegas see an increased chance of it.

Unexplained Things That Only Happen In A Few Places On Earth
Ken Lund/Wiki Commons

Turns out being surrounded by miles of dry, depressing desert and nothing else isn't super-great for the ol' mood.

"Well, duh!" you're probably saying, "It's all those people who lost their life savings at the roulette wheel!" Nope. Despite the long-running trope of the gambler who loses his ass at the casino and then literally checks out at his hotel, the phenomenon has no correlation with gambling. Vegas itself just terminally bums people out.

African-Americans In The Southern U.S. Are Prone To Collapse And Faint Without Warning

Unexplained Things That Only Happen In A Few Places On Earth
AndreyPopov / iStock

Remember that old cliche about the fainting Southern Belle? You know, the rich plantation owner's daughter who, upon receiving distressing news about her fiance from the front lines of Lincoln's War, faints dead away into the arms of her handmaidens? Well, it turns out that old stereotype is pretty much spot-on ... in terms of the symptoms, anyway. In terms of the cause of said symptoms and the social group affected, it couldn't be more off-base.

Known as "falling out" in the Southern United States and "indisposition" in Haiti, this odd condition causes a sufferer to experience severe dizziness, followed by a sudden collapse. Individuals who experience these spells report being conscious of their surroundings, but completely unable to move. In some cases, they can't even see. In stark contrast to the stereotype, falling out usually occurs in direct response to "intense anger, rage, or fear," like the most ineffective imaginable version of the Hulk's superpower. You get so mad and/or terrified that your spirit temporarily evacuates your body like a falling spaceship.

Unexplained Things That Only Happen In A Few Places On Earth
AndreyPopov / iStock

Taking "fight or flight" to its logical, yet utterly terrifying, extreme.

The most peculiar aspect of the condition is that it almost exclusively affects African-Americans in the Southern U.S. and Afro-Caribbeans in Haiti and the Bahamas (where it affects nearly a quarter of the population). The most obvious theory is that it's caused by the unique stress that comes with living in the inner city (poverty, overcrowding, gangs, all the other bullshit) but, once more, you don't see it in other parts of the world where they have those exact same factors. It's these two distinct populations in these two distinct areas, and nobody has any idea why.

Unexplained Things That Only Happen In A Few Places On Earth
MickyWiswedel / iStock

It's not all earthquakes and devastation's fault, though they certainly don't help.

On a similar, yet even stranger, note ...

Healthy Young Men From Southeast Asia Are Going To Sleep And Never Waking Up

Unexplained Things That Only Happen In A Few Places On Earth
Prasit Rodphan / iStock

Sudden Unexpected Nocturnal Death Syndrome -- or SUNDS -- is a mysterious disease that is killing sleeping men in Thailand, Malaysia, Laos, and other countries throughout Southeast Asia. The syndrome is precisely what the name implies: A person goes to bed and wakes up significantly more dead than they were when they went to sleep.

The men who succumb to this syndrome are all relatively healthy, and there is often no discernible reason why it occurs -- "toxicology, heart disease, sleep apnea and other sleep disorders, genetics, metabolism, and nutrition" have all been ruled out. And you can't outrun sleep death by leaving the region, as the syndrome practically haunts Asian men no matter where they go. For example, in the 1980s, U.S. immigrants of the Hmong ethnic group were frequently sleep-dying without warning.

Unexplained Things That Only Happen In A Few Places On Earth
RamseyCountyMN / Wiki Commons

This is less a town hall meeting and more a dress rehearsal for that guy's funeral.

Despite the best efforts of the scientific and medical communities, no one has any idea why SUNDS only affects men in the prime of their lives, or how to cure it. The best guess comes from Shelley Adler, a professor at the University of California, San Francisco, who postulates that the deaths stem from the Hmong belief that a nightmare is an actual visit from an evil being intent on murdering the shit out of you in your sleep. That's right: Science's most plausible explanation for SUNDS is Thai Freddy Krueger.

Engineering Schools Are An Inexplicable Breeding Ground For Terrorists

Unexplained Things That Only Happen In A Few Places On Earth

First off, we are absolutely not saying that all engineers are terrorists. That's crazy talk. What we are saying, however, is that a disturbingly high percentage of extremists are engineers. And no, we don't mean that terror groups send recruits to engineering schools so that they can learn techniques to use later. We mean that engineering schools appear to be breeding grounds for terrorism, and nobody knows why.

StartupStockPhotos / pixabay

It can't be all wanting to blow up the teacher for refusing to grade on a curve.

Researchers examined 207 Middle-East-born Islamic terrorists who pursued higher education, and found that a whopping 45 percent of them studied engineering. For perspective, regular, law-abiding college students in 19 Middle Eastern countries were also examined, and only 12 percent studied engineering. And this isn't a uniquely geographical phenomenon. Of 71 Muslim terrorists who grew up in Western countries, 32 of them studied engineering.

"Oh," you figure, "So Jihadists probably target and recruit these populations because they'll be useful." That would make sense on the surface, since an engineer could help a group of terrorists create explosive devices or craft attractive recruitment websites. Well, researchers looked into it and found that in most instances, the engineers were not recruited -- they joined the groups of their own accord. Also, of 228 terrorist plots reviewed, a mere 15 percent of the engineers crafted the incendiary devices involved. Their engineering skills weren't even put to use.

Unexplained Things That Only Happen In A Few Places On Earth

So yet another example of your diploma being worthless for the career you end up in.

"Okay," you think, "Maybe there's some kind of other weird connection between extremist Islam and the type of Muslims who pursue those fields?" Not really -- it turns out that other extremist groups, such as white supremacists and neo-Stalinists, also feature a disproportionate number of engineers. What the fuck?

Is there something about that field that attracts angry, antisocial types? Is there something about that field that turns normal kids into angry, antisocial types? Is it all a big coincidence? Nobody knows.

Unexplained Things That Only Happen In A Few Places On Earth
d97jro / pixabay

Until we do, we should probably cover MIT and all who attend in a thick blanket of cement. Just in case.

Check out Patrick Coyne's blog for more funny articles of this ilk.

For more bizarre phenomenon that happens in only certain locations, check out 5 Mental Disorders That Only Occur In One Place On Earth and 6 Mental Illnesses That Only Happen In One Place On Earth.

Subscribe to our YouTube channel, and check out The Horrifying Truth About Those People In TV Commercials, and other videos you won't see on the site!

Also, follow us on Facebook, and let's be best friends forever.

Discover the History You Missed...

and so much more! One Cracked Fact delivers one new story from the worlds of history, science and pop culture, directly to your inbox every day. Sign up now!

Forgot Password?