Parasites in the human body

parasites(from Greek parasitos - parasite, parasite) - lower plant and animal organisms that live outside or inside another organism (host) and feed at its expense.

parasites in the human body

parasitesarose in the process of the historical development of organisms from free-living forms.

Their adaptation to certain living conditions led to the simplification of their organization, the development of special fixation organs, enhanced development of the genital organs and anoxybiotic respiration, which made it possible to exist in an oxygen-free environment.

Many parasites include:

  • helminths;
  • fungi;
  • viruses;
  • protozoa;
  • worms;
  • crustaceans;
  • arachnids;
  • insects.

Hosts of parasites can be:

  • bacteria;
  • protozoa;
  • plants;
  • animals;
  • human.

Parasites go through a complex development cycle: sometimes they require a change of 2-3 hosts, whose organism is intermediate (the helminth passes through larval stages) or terminal (the helminth becomes sexually mature, invasive).

Classification of parasites

According to their distribution, parasites are divided into:

  • Omnipresent- found everywhere.
  • Tropical- common in tropical climates.

According to biological and epidemiological characteristics, parasitosis are divided into:

  • Geohelminthiasis- a disease in which parasites (helminths) develop first in the human body, and then on an inanimate substrate, often in the ground.
  • Biohelminthiasisis a disease in which the biological development cycle of the parasite (helminth) necessarily takes place in the body of living beings other than humans.There are definitive hosts in whose organism the helminths develop to the sexually mature phase, as well as intermediate hosts in which the parasite is in the larval stage or reproduces asexually.Humans are often the ultimate host, less often the intermediate host.
  • Contact helminthiasis- a disease in which the parasites are released from the human body mature or almost mature, as a result of which it is possible to infect another person or to become infected again (autoinvasion, reinvasion).

Depending on the location of the parasite in the human body:

  • Luminal parasites- living in the intestinal cavity and other cavities of the human body (for example, roundworms, tapeworms).
  • Tissue parasites- living in the tissues of the human body (schistomatosis, echinococcosis).

According to the place of residence of the owner (person):

  • External parasites(mosquitoes, horseflies, leeches, lice).
  • Internal parasites(helminthiasis):
    • roundworms (nematodes - roundworms, filaria, whipworms, pinworms, strongyloides, hookworms, trichinella);
    • flatworms:
      • trematodes (flukes - cat fluke (opistorchid), clonorchid, fasciola, schistosoma);
      • cestodoses (tapeworms - beef and pork tapeworm, dwarf tapeworm, broad tapeworm, echinococcus).
  • bacteriosis(leptospira, staphylococci, streptococci, shigella).
  • Protozoa or protozoa(amoeba, lamblia, trichomonad, often hosts of chlamydia and the AIDS virus).
  • mycoses(fungal diseases) - candida, cryptococci, penicillium.

How parasites enter the human body

You can get infected with parasitosis not only through dirty hands.Animal fur is a carrier of worm eggs (ascaris and toxocara), Giardia.

Pinworm eggs that fall from the wool remain viable for up to 6 months and enter the alimentary tract through dust, toys, carpets, underwear, bedding and hands.

a dogby means of moist breath, it scatters eggs at a distance of up to 5 meters (cat - up to 3 meters).

Fleasdogs also carry worm eggs.Ascaris eggs enter the human body through poorly washed vegetables, fruits, berries, herbs, dirty hands, and are also spread by flies.

And improperly prepared kebab or home-made bacon is a way to get infected with trichinellosis;poorly salted fish, caviar or "stroganina" - opisthorchosis and tapeworm.

So, there are several ways that parasites enter the human body:

  • nutritional(through contaminated food, water, dirty hands);
  • contact-household(through household items, from infected family members, pets);
  • transmission(via blood-sucking insects);
  • percutaneous,or active (in which the larva penetrates through the skin or mucous membranes into the human body during contact with contaminated soil when swimming in open water).

Adaptive properties of parasites:

  • long life (helminths live in the human body for years, and sometimes as long as the owner of the parasite lives);
  • the ability to suppress or modify the immune response of the host organism (a state of immune deficiency occurs, conditions are created for the penetration of pathogenic agents from the outside, as well as for "disinhibition" of internal foci of infection);
  • Many types of helminths, when they enter the digestive tract, secrete anti-enzymes, which saves them from death;the digestive process is disturbed, toxic-allergic reactions of varying severity occur: urticaria, bronchial asthma, atopic dermatitis;
  • developmental stages (egg, larva, host change);
  • the ability of eggs to survive for years in the external environment;
  • sexual reproduction, during which the exchange of genetic information takes place, and this is the highest stage of development, which leads to an increase in the heterogeneous population, i.e.parasites become less vulnerable;
  • lack of immunoprophylaxis methods, as the immune response is weak and unstable;
  • wide distribution of helminths, many habitats (water, soil, air, plants and animals).

Epidemiology of parasitosis

Due to the growing migration processes, the variety of helminths parasitizing the human body is increasing significantly.Currently, 70 species of parasites are common out of more than 260 extant.There is a tendency to increase infection with enterobiosis, giardiasis, toxocarosis, opisthorchosis, diphyllobothriasis, tenidosis and echinococcosis.In the countries of Southeast Asia, Africa and Latin America, schistosomiasis and filariasis are common.

"Healthy" people...Many people leading a healthy lifestyle experience health problems due to the presence of parasites in the body.Improving the health of the body (proper nutrition, exercise, hardening procedures) without ridding the body of parasites does not give a pronounced positive effect.

They are everywhere...According to the World Health Organization (WHO), helminths and other types of parasites are localized not only in the gastrointestinal tract, but also in vital organs: the brain, heart, lungs, liver, kidneys.

Cause of many diseases

In the course of their life, helminths release special substances - toxoids, which are strong poisons and allergens.Parasitosis (protozoa, fungi and helminths) are the cause of many chronic diseases:

  • cholecystitis;
  • cholelithiasis;
  • pancreatitis;
  • colitis;
  • diabetes mellitus;
  • bronchial asthma;
  • atopic dermatitis.

Chronic fatigue, irritability and anxiety, hyperactivity in children, anemia, brittle nails and hair, problem skin, headaches, appetite disorders, lowered immunity - these can be signals of existing parasitosis.

If untreated...When parasites remain in the human body for a long time, the immune system suffers significantly.In the process of constant struggle with foreign antibodies, exhaustion is reached, that is, the development of secondary immune deficiency.

Parasitosis leads to:

  • to hypovitaminosis and depletion of trace elements: potassium, copper, manganese, selenium, zinc, magnesium, silicon;
  • to hematopoietic disorders;
  • hormonal imbalance;
  • vascular permeability is impaired;
  • The body's anti-cancer defenses suffer.

How did you save yourself before?For thousands of years, people eating mostly plant-based food have received antimicrobial, anti-parasitic and antiviral natural active substances along with it.The decrease in the consumption of wild plants, fruits, berries, their replacement with cultivated vegetables and fruits, thermal and industrial processing led to a decrease in the consumption of natural phytoncides and antibiotics.As a result, humans have become easy prey for many microorganisms.The intensive development of the pharmaceutical industry producing antibiotics has led to a decrease in anti-parasitic immunity.

Traditional medicine to eliminate parasites in the human body

Medical synthetic anthelmintic drugs have their pros and cons.There are three main negative factors:

  • often they affect only the gastrointestinal forms of parasites;
  • very toxic to the human body;
  • cause many side effects.

Science does not stand still!Intensive scientific research into the antibiotic properties of plants is being conducted all over the world.In terms of effectiveness, they are not inferior to synthetic antibiotics, but they do not cause the side effects that are characteristic of synthetic drugs.Medicinal components of plants are complex natural phytoncide complexes that can rid the human body of many parasites at different stages of their development.

nature!Here's what will help us!Preparations of plant origin are much less toxic;if necessary, they can be prescribed for long courses;they activate antiparasitic immunity and effectively suppress the vital activity and reproduction of parasites in the human body.

Parasites are widespread diseases with a toxic and damaging effect on the human body.Since treatment with chemical drugs has a negative effect on the body, the optimal solution to the problem of parasitosis is herbal products.