What happens if all the parasites on Earth disappear?

"Within a few hours, millions of poor people on Earth will be cured of serious illnesses, chronic diseases caused by parasites such as malaria, parasites and roundworms," said Kevin Laferty. However, after that are incalculable consequences.

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There are millions of different parasites living in our world. In Greek 'Parasitos' means 'someone who eats at someone else's table'.

They specialize in living and benefiting from their host and victim.

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Not only are rich, popular, diverse and important, 50% of organisms on Earth are parasites. Not to mention the common species we know of such as mistletoe, lice, viruses . even parasites of birds: howling is the most popular because of the daring habit: lay eggs in other bird nests.

Suppose all the parasites on the earth disappear in one night. Does our life become better?

'Within a few hours, millions of poor people on earth will be cured of serious illness, chronic diseases caused by parasites such as malaria, flukes and roundworms. People can work harder, enjoy life more. Their pets and crops will also be healthy, ' said US Geological Survey Kevin Lafferty.

However, that joy will not last long because of the hidden consequences. And the worst, perhaps, is the loss of inspiration about sex.

Here are the dangers once the parasite disappears:

Loss of control of the immune system

The human immune system always evolves and evolves over time to cope with infection. Therefore, if young, people are not exposed to parasites and other diseases, the immune system will not develop properly and vice versa also turn to attack the body's own organs. People who live in a clean environment still have allergies and autoimmune diseases can be a testament to this problem. Without contact with the parasite, the body even has more illnesses.

Not only the immune system but other body organs may also be out of control.

Ecological imbalance

'Almost all species on earth carry a parasite' - Levi Morran, Emory University, Georgia, USA. The parasite plays an important role in the destruction and decomposition of species. Without parasites, populations can only explode.

'It is one of the things people have never faced before and we will have to kill a lot of' things 'at risk of explosion,' Levi added.

Other animals can increase in number, replacing the disappearing parasites, especially predators. Further, it can entail the transformation of many other plants and animals on the earth.

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The ocean will become a thick green carpet

The most dramatic change will probably take place in the ocean, said Luis Zaman, University of Washington, Seattle. The seas will be thickened by algae and other microorganisms thanks to energy from sunlight. Directly or indirectly, they eat all marine animals.

All parasites in the ocean disappear, possibly destroying the marine ecosystem. Some time later our oceans can become a vegetation or a barren desert.

Species will stop evolution

Undeniably the role of parasites in the evolution of all species today. The parasite itself has made the diversity of life on Earth.

That's because hosts and parasites are always in a constant evolutionary race, pushing both to the destination of survival or superiority.'When the host and parasite interact, it is a fertile ground for co-evolution' - Moran said. It is this relationship that makes the historical evolution of life on earth.

Loss of inspiration, sex appeal

The tail of a peacock, the large mane of an animal, or the large horn of a ram, are all sexually attractive characteristics of male individuals that are thought to be developed by parasites.

In addition to promoting other possibilities, parasites may be the main factor promoting sex. An empirical evidence shows that sex helps species survive before parasites. Morran's 2011 experiment showed that an infectious bacterium can kill asexual worm population while the sexually transmitted worms survived.

So if parasites help maintain, develop sexual relations, once asexual disappearance will become common in species.

Instead of an effort to remove parasites from our world, scientists today argue that we should preserve them, the way we protect other valuable animals. Modern medicine has been finding ways to cure human diseases by using parasites.

However, the life of parasites is also threatened by other factors such as climate change, pollution and destruction of human habitats.