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The Most Horrifying Parasites!


The Most Horrifying Parasites!

Science breaks down the creepiest parasites on the planet!
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Written and created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz).

The Most Gruesome Parasites – Neglected Tropical Diseases – NTDs

There are a group of parasites extremely disgusting and mean. Humanity declared war on them.

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4 Parasites Too Creepy to Exist

Warning! This episode is a little gross… Between 1/3 and 1/2 of all life on earth is parasitic - and here are 4 of the creepiest parasites we know about.

#SciShow #Parasites #Biology #Creepy #STEM #Science
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Top 10 Scariest Human Parasites

Top 10 Scariest Human Parasites
Human parasites include various protozoa and worms which may infect humans, causing parasitic diseases. They are divided into endoparasites, which cause infection inside the body, and ectoparasites, which cause infection superficially within the skin.

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Top 10 Most Terrifying Human Parasites


Humans are in a constant state of cohabitation with their environment unfortunately that means we all have to live with parasites, but while some are harmless others are absolutely vile. These are the top 10 most terrifying human parasites.


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Human Parasites You Never Want to Have | Unveiled

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From parasitic worms that live in your stomach, to brain-eating bugs that attack your eyes and nose... In this video, we take a look at some of the most grotesque, dangerous and deadly human parasites out there! And, while they usually hatch as microscopic creatures that feed off of our bodies, they often grow into genuinely terrifying creepy-crawlies. Those of a squeamish disposition, look away now!

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Human Parasites

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7 Most Horrifying Parasites On The Planet

From mind-control fungus to worms that swim through your eyeballs. Join us as we vomit our way through 7 of the most horrifying parasites on the planet!





Why Parasites May Not Be All That Bad

According to one ecologist, parasites might be the most common form of life on earth. How gross is that?! Trace looks at what these little creatures are doing to our bodies, and how they may not be quite as bad as we're led to believe.

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5 Reasons Parasites are Beneficial to the Earth

Parasites aren't all bad, though. In fact, some of them can actually be quite beneficial to humans and other living creatures.

'Parasitism is the most popular lifestyle on Earth'

Parasites are all around us - humans alone have 100 - yet they receive little attention. That should change, says ecologist Kevin Lafferty

Tapeworms in Humans

Tapeworms are flat segmented worms that live in the intestines of some animals.

Parasites - Dracunculiasis (also known as Guinea Worm Disease)

Humans become infected by drinking unfiltered water containing copepods (small crustaceans) which are infected with larvae of D. medinensis.

The Potential Health Benefits of Parasitic Gut Worms

A dose of parasitic whipworms cured monkeys with chronic diarrhea, fixing immune systems gone haywire and offering a snapshot of what worms might do for people.

The 7 Most Horrifying Parasites on the Planet

As soon as your doctor says you've got parasites in your body, you don't need to hear any more details. They're all horrible, right? How can it get worse than little tiny worms or something feeding on your insides?

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10 Terrifying Parasites That Love To Live Inside Human Body

Here are 10 foreign things that live inside the human body.

Parasites and other nuisances know few boundaries, and among some of the creepy crawlies, human skin doesn’t even serve as a deterrent.

Here are 10 foreign things that live inside the human body.

Number 10. Loa loa worms. It’s also called an ‘eye worm’, because that’s where it likes to live, but it’s been known to take up residence elsewhere. Wherever it chooses to roost, expect swelling, irritation, and, if not treated, a 17-year guest.

Number 9. Tyrant king leech. Mucus is among the favorite meals of this bloodsucker, so once it finds a host it heads straight for his or her orifices. The leech itself about the size of a pinky finger, and has teeth that are several times longer than usual. Often times it chooses its next host among individuals swimming in Amazonian streams.

Number 8. Flatworm blood fluke. They start off living on snails, but eventually vacate, spend some time in the water, and often move into a much bigger home – a human. Once they’re settled the flukes proceed to lay eggs in the intestine. The ova not purged from the body sometimes wind up in the liver, where they can cause problematic inflammation.

Number 7. Tapeworms. Another intestine inhabitant, these long, flat parasites latch onto the inner walls of the tract. In humans,they can survive that way for up to 25 years. Malnutrition, weight loss, and fatigue are all signs that a tapeworm may be lurking within.

Number 6. Ticks. Ticks latch onto the skin, and use a feeding tube to suck their victim’s blood. If you don’t remove the entire body, head and all, medical attention is highly recommended. Don’t freak out completely, though. Not all of them carry diseases.

Number 5. Dracunculus medinensis. When they’re just wee baby parasites they attach themselves to water fleas, which is how they get a free ride into a human host. Over time they grow, sometimes up to three feet long. Once they’re ready they’ll start to burrow their way out. Disgusting and painful? Yes. Dangerous? Not necessarily.

Number 4. Chagas parasites. They’re spread by creatures known as kissing bugs attracted to the sleeping faces of humans, and as adorable as their name is, being bitten by one can result in very unpleasant consequences. The parasites they embed in people can stay dormant for years, making them difficult to identify, but when they do strike they can cause organ failure.

Number 3. Toxoplasma gondii. The condition caused by them presents with eye complications, swollen lymph nodes, and muscle aches. Cats have gotten a bad rap for spreading the parasitic microbes, but undercooked meat and even fruits and vegetables can also be carriers.

Number 2. Giardia lamblia. This irritating protozoa causes the most common parasitic infection in the world. It’s spread through oral contact with feces and causes significant gastro-intestinal distress. If chronic, fatigue and depression can occur.

Number 1. Chigoe fleas. You may know them better as sand fleas or jiggers, but no matter what they’re called they’re entirely unpleasant. They often creep up into people’s feet and use the warm, safe space to lay eggs. When the shelter is no longer needed, the foot sometimes bursts open and out comes mamma flea and her hundreds of eggs.

Which parasite would you least want to play host to?

10 Signs And Symptoms Your Body is Full of Parasites

Just imagining a parasite in the body is a scary thing, but many people have parasites and are not even aware of it worms in humans.

Parasites are microorganisms that live off other organisms. Anyone can get a parasitic infestation. It is more common than you may think.
symptoms of parasites in stomach,Some parasites can cause disease directly, while others cause disease by the toxins that they produce. There are several types of parasites that live in and feed off your body. Some survive on the food you consume, some feed on red blood cells and some even lay eggs inside your body.

Some of the common parasites that can infest your body are pinworms, lambia, hookworms, tapeworms, trichinella, and dientamoeba fragilis.
worms in your stomach, They normally enter the body through the skin or mouth intestinal parasites. A person can get a parasite infestation due to several reasons, including exposure to areas having parasites, traveling to places that have parasite infestations, intake of contaminated water or food, poor sanitation, poor hygiene and a weak immune system.

Close contact with pets can also lead to a parasite infestation. As parasites are of different forms, shapes and sizes, they cause a very wide range of signs and symptoms. warning signs that you have parasites in body.
Here are the top 10 warning signs that your body is full of parasites you must to get parasite cleanse.

review :
01:02 Chronic Digestive Issues
02:05 Abdominal Pain
03:08 Anal Itching
04:06 Fatigue and Weakness
05:11 Change in Appetite & Weight Loss
06:08 Mental Distress
07:12 Teeth Grinding
08:03 Iron-Deficiency Anemia
09:15 Skin Problems
10:01 Muscle and Joint Pain

1. Chronic Digestive Issues

Intestinal parasite infestation can cause inflammation and destroy the intestinal lining of the gut, leading to chronic diarrhea.
body worms parasites, A 2015 study published in the Journal of Biology, Agriculture and Healthcare emphasizes routine intestinal parasite screening to increase the diagnostic rate of parasitic diarrhea and improve the treatment and prevention strategies of diarrhea in children with severe acute malnutrition.

2. Abdominal Pain
intestinal bug symptoms, parasite symptoms Another stomach problem caused by parasites is abdominal pain. Parasites residing in the upper small intestinal region cause inflammation and irritation in this area. This leads to a bloated feeling and pain in the abdomen.

Plus, parasites can even block the passage of waste products exiting the body, which can lead to pain in the upper abdominal region.

3. Anal Itching
symptoms of having a parasite, Itching around the anus is another sign of a parasite infection. Especially those suffering from pinworms often complain of anal itching or discomfort. Itching around the anus occurs frequently at night when the female pinworms lay their eggs parasite symptoms.

The itching is caused by the female pinworms that migrate to lay eggs around the anus. Both the migrating female pinworms as well as the clumps of eggs are irritating and cause itching, crawling sensations or even acute pain.

If you have itching around the anus during the night for more than two weeks and without any sign of rashes, consult your doctor.

4. Fatigue and Weakness

Fatigue may also be a symptom of a parasite infestation. This is mainly associated with intestinal worms that deplete the body of vital nutrients by feeding on the food you eat.

Malabsorption of vitamins, minerals, fats and carbohydrates can make the body weak, leaving you exhausted, depressed and with a feeling of general apathy. It can lead to exhaustion at mental, physical and emotional levels.

5. Change in Appetite & Weight Loss

If you notice a sudden change in your appetite, particularly an increase in appetite, it may be due to the presence of parasites in your body.

In fact, an increased appetite combined with weight loss is often noticed in cases of tapeworm or pinworm infestation.

This happens as the parasites consume a good amount of the food eaten by the infected person, thus making the person hungry more often than usual.

Also, the infected person may notice a strong early morning hunger and may never feel satisfied or full after eating a meal.

6. Mental Distress
internal parasites in humans, A parasite infestation can even cause mood swings, depression, anxiety and also visual hallucinations. Often, these symptoms are paired with digestive issues.

The intestine contains both neurons and neurotransmitters (specifically serotonin), which are important for a healthy enteric nervous system.

Toxic metabolic waste produced by parasites residing in the intestine can attack neurons and neurotransmitters, causing nervousness, restlessness, mood swings and even depression.

7. Teeth Grinding
8. Iron-Deficiency Anemia
9. Skin Problems
10. Muscle and Joint Pain

Cymothoa exigua --- The most horrifying parasite

I took this video at the beach in Freeport, Texas, in 2009. The fish we caught had this creature wiggling around it its mouth. At first, I thought it was the fish's tongue, but I looked it up when I got home because it was just so weird.

In fact, it is not a FISH TONGUE but a Cymothoa exigua, a small parasitic crustacean. This creature enters through the fish's gills, latches on to the base of the tongue, and slowly feeds by sucking the host's blood until the tongue atrophies and falls off. The parasite then replaces the fish's tongue by attaching its own body to the muscles of the tongue stub. This is the only case in nature where a parasite replaces a host organ.


A lot of you are distressed because I killed the parasite toward the end of the video. I did this because I wanted to see if it was filled with roe-like eggs, as a previous Cymothoa had been. Unfortunately, it was just filled with dark, inky crap. However I won't apologize for killing it, because it was gross and deserved to die.

What's the nastiest parasite ever? Hint: It's a worm

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Short Description:
The Guinea Worm is an painful parasite that crawls in human skin and causes a blister to form. Oh, and it can grow up to three feet long. The most common way to get rid of it is by slowly wrapping it on a stick over a few weeks. It's also extremely painful and feels like fire.

Long Description:
Why shouldn't you yank out and break the fiery serpent that is the Guinea Worm? Find out in a minute.

If you drink water infested with guinea worm infected fleas, your stomach would digest the flea, but not the worm. The worms then mate in the cavities of your body and after three months, the male worm dies and you absorb it. The males grow to be half to an inch long. But he's not the problem. She is. The female grows to be three feet long, and as thick as spaghetti. She then painfully crawls around your body just under the skin to settle in deep tissues, in your joints, and beside long bones.

Oh and she ain't done with you yet. For a whole year, after having trouble concentrating on school and work from all that pain, a blister forms on your foot and in 72 hours, the burning blister bursts. Because your foot is on fire you sooth it in water at which point this SOB releases her larvae. After release, fleas eat the larva. The larva gets eaten by your cousin Adedimeji and the cycle starts over again.

You now decide that it's time to part ways with the worm. How do you do it? There's no vaccines, or medications, and It's too late for surgery. And then The worm peaks it's tail out the blister and you strike. You grab the worm and prepare to yank it out.

But you shouldn't. If you break the worm, it could cause putrification where the worm rots and and your skin drops off or petrification where worm hardens and stays in your joints.

You should instead wrap it in gauze or a stick and slowly pull over hours, weeks, or months as you gently massage the area. Dracunculiasis is latin for affliction with many fires and that's exactly what it feels like during extraction or when the worm moves. This is the same method egyptians used in 1550 BC, and it's been found in mummies. But now a-days, you have access to Thiabendazole (Parasiticide, could cause worm to migrate), Analgesics (for swelling) and Antibiotics (for infection). But if the wound heals too well or quickly you could break the worm, so you'll have to use some oil to lubricate it.

The best way to combat the worm is to prevent it in the first place. Avoid drinking the fleas by using filters or clean wells. Don't let people with the worm near water supplies, and make sure they empty their larvae infected foot water on dry dirt.

The worm mainly lives in these countries, and humans have almost gotten rid of it. I think it's odd that we want to prevent the extinction of the cape stag beetle, but we feel fine destroying the Guinea worm. But then again, the beetles don't crawl up in your skin. I think we should at least keep a few larvae around just in case it cures skin cancer or something.

Top 10 Most Dangerous Parasites

Acanthamoeba Keratitis (Eye Eating Parasite) - Acanthamoeba keratitis is caused when, once inside the eye, the Acanthamoeba secretes proteins that dissolve the surface of the cornea. The amoeba makes its way into the cornea and then feeds on the bacteria present in the eye, as well as the corneal cells themselves. This can cause eye pain, redness, blurred vision, sensitivity to light and excessive tearing. If left untreated, the disease can cause severe pain and eventually blindness.

Baylisascaris Procyonis (Raccoon Roundworm) - Baylisascaris infection, also called raccoon roundworm infection, is an extremely rare disease that typically affects young children (who pick up and ingest raccoon feces). In rare cases, the larvae will break through the brain's defenses and begin eating the tissue from the inside out. Initial symptoms can include excessive sleeping and high white blood cell count. Depending on which part of the brain is affected first, loss of balance and even vision loss (if the parasite attacks the visual cortex) can follow next. The result is severe and permanent brain damage, even death. There have been no known full recoveries from this infection.

Loa Loa (They Eye Worm) - The larvae of this nematode worm infect humans through fly bites, and the adult can travel through the body's tissue for years. Most common in west and central Africa, symptoms include itching, swelling and even brain damage in very unlucky victims. The worm only becomes obvious when it reaches the eye, where it can be easily seen and, more horribly, felt by its victim as it squirms across the soft tissue beneath the cornea. This is also when the worm is fairly simple to remove under local anaesthetic.

Naegleria Fowleri (The Brain Eating Amoeba) - The Naegleria fowleri parasite causes a rare but very severe, usually fatal brain infection. It leads to primary amebic meningoencephalitis (PAM), a disease in which brain tissue is destroyed. Symptoms usually begin within two weeks of infection and include headache, fever, nausea, vomiting and a stiff neck. As the infection progresses, the infected individual may become confused, unable to focus on their surroundings and unable to balance properly. They may also experience seizures and hallucinations. The infection progresses rapidly and generally causes death within 3 to 7 days.

Plasmodium Parasite (Malaria) - In humans, the Plasmodium parasite grows and multiplies in the liver cells and later in red blood cells. Broods of these parasites grow inside the red blood cells and release daughter parasites that go on to invade other cells in a relentless 48-hour cycle. As this occurs, humans display a wide variety of symptoms. These include fever, chills, sweating, headaches and muscle pains — much like the symptoms of the common flu. In a classic and uncomplicated case of malaria, the attack lasts 6-10 hours and is divided into a cold (shivering) stage, a hot (fever) stage and a sweating stage. These attacks occur every 2 to 3 days throughout the duration of the infection.
But severe complications can include cerebral malaria (seizures, coma, neurologic abnormalities), anemia, kidney failure, cardiovascular collapse, pulmonary edema, and other life-threatening ailments. Severe malaria usually occurs in people who have compromised immune systems or whose immunity has decreased as a result of high malaria transmission rates. The incubation period for malaria is generally 7 to 30 days, after which the symptoms become apparent. Some dormant forms of malaria can cause symptoms several months or even years after the initial mosquito bite.

Strongyloidiasis (Treadworm) - Infection from Strongyloides is generally characterized by gastrointestinal problems, including bloating, distension, abdominal pain and diarrhea. The disease can also cause rashes, usually on the feet but sometimes across other parts of the body. If the disease becomes disseminated throughout the host, the infection can cause wheezing, coughing, and meningitis-like symptoms.

Taenia Solium (Pork Tapeworm) -

Parasite-Derived Cancer

Can malignant transformation of parasite cells cause neoplasms in an immunosuppressed host? New research findings are summarized in this new Quick Take video.

See the NEJM article, Malignant Transformation of Hymenolepis nana in a Human Host:

Removing Intestinal Worms & Parasites from Bodybuilders Colon in NY RE

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WORST Invasive Parasites Found In Fish

Take a look at some invasive parasites! From zombie fish to flesh eating parasites to tongue eating lice and holes in fish heads, these parasites are really dangerous!
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4. Hexamita (hole in head)
Just missing out on being in the top three is a parasite known as ‘hexamita’ which mainly causes the disease ‘Head and Lateral Line Erosion’ or simply ‘Hole in the head’.
As hexamita starts its life inside the fish, it will reside in the intestinal tract and move throughout the host invading vital organs including the kidneys. In order to spread its spores, it needs to escape through lesions made in the head of the fish - which is then known as ‘Hole in the head’.
Starting out with small indents in the head; the parasite causes initially mild conditions - including discolouration and those lesions I mentioned earlier. However, when left untreated, these small holes in the head grow larger and deeper - attracting bacteria and fungi to invade the exposed lesions and holes in the fish’s head that parasite spores escape from. It is these that cause death in the fish as the creature will eventually lose its appetite and succumb to the infection.
3. Roundworms (nematodes)
Hitting in at number three is a special contender - it’s the ‘roundworm’, or more commonly known as a nematode. What makes it so special? Well, it’s simply because of how diverse they are! They can affect everything from fish, to insects, to mammals, and that includes humans like you and I. We call these types of organism ‘zoonotic’, as they can thrive in different species - similar to the fish tapeworms which came in at number 5!
There are thousands of different species of roundworms, but they all work in a similar sort of way. They can cause anaemia which is a loss of red blood cells, they can hemorrhage fish and cause them to lose their balance when swimming. They also tend to fray the fish’s gills meaning that the host can’t take in the required oxygen to survive - often choking it to death or causing it to become slow and confused. They often hook into important body parts and sap energy and nutrients from them, including the liver and digestional tract.
Even though these creatures are ‘zoonotic’, they might not always show the same symptoms from host to host. In humans, symptoms are usually less fatal and can cause us to have rashes, diarrhea, stomach pains and general malaise (that’s a feeling of unwellness). They are also known to cause us to lose our appetite and to lose weight. In 2012, a man from Brazil caught a zoonotic nematode after eating raw sashimi - two weeks later he was diagnosed with a parasite which caused his back to blister into red lesions.

2. Rhizocephala
Rhizocephala are very similar to the shark infesting Anelasama; however, these barnacles serve as parasites to crabs. Female crabs have a ‘brood pouch’, where she keeps her eggs; this is mainly how the rhizocephala attacks its host.
After being infected through a joint, the crab will have the parasite racing through its feeding tubes until they reach the brooding pouch. The rhizocephala then completely destroys the eggs inside the pouch, destroys the pouch itself and replaces it with itself; the crab is now infertile and is manipulated by the parasite to believe that it still has an egg pouch - meaning the female crab goes out of her way to protect the parasite.
Well, that’s lucky for male crabs! Don’t be so sure… this parasite also attacks the brain of male crabs making them produce feminine hormones - causing the crab to believe it has an egg sack itself; and infecting it the same way… yikes! I wonder what can be worse than a parasite that tricks you into caring for it?... wait to you see what we have next...
1.Cymothoa exigua (tongue eating louse)
Taking top place is the tongue eating louse, a completely destructive and terrifying parasite that has a very particular way of working.
After entering the host through its gills, the louse will find the tongue of the fish. While attaching itself, it attempts to sever all the blood vessels in the tongue. The lack of blood coming to the tongue then causes necrosis (this is the scientific for dying tissue). The necrosis of the tongue kills all of the tissue making it fall off! With just a stub left, the louse attaches itself to the base of what was the fish’s tongue and replaces itself forever.
Once the fish dies, the louse will detach itself from the tongue and then just reattach itself to the outside of the fish, gaining more nutrients there. What makes this worse is that this process takes a while, so many people have found fish with no tongues in their shopping! While the fish has the parasite attached, it can still use it as a real tongue with no real detriment to its health.
A spooky parasite, this is the only known one in the animal kingdom to become a fully functioning organ when attached!

Parasite Infiltrates Bloodstream

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Single-minded, ruthless and devious, the Barbesia parasites are the most deceptive on the planet.



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