Parasites in the human body

Parasites(from the Greek parasites - 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 historical development of organisms from free-living forms.

Its adaptation to certain living conditions implied a simplification of its organization, the development of special fixation organs, better development of the genital organs and anoxybiotic respiration, which allows existence in an oxygen-free environment.

Many parasites include:

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

Parasite hosts can be:

  • bacteria;
  • protozoa;
  • plants;
  • animals;
  • Human.

Parasites go through a complex development cycle: sometimes they require an exchange of 2 to 3 hosts, the organism of which is intermediate (the helminth goes through the larval stages) or final (the helminth becomes sexually mature, invasive).

Classification of parasites

According to their distribution, parasites are divided into:

  • Ubiquitous- found everywhere.
  • Tropical- common in tropical climate zones.

According to biological and epidemiological characteristics, parasitic infections are divided into:

  • Geohelminthiasis- a disease in which parasites (helminths) develop first in the human body and then in an inanimate substrate, often in the soil.
  • Biohelmintosesis a disease in which the biological development cycle of a parasite (helminth) necessarily occurs in the body of living creatures other than humans.There are final hosts, in whose body the helminths develop until the sexually mature stage, and also intermediate hosts, where the parasite is in the larval stage or reproduces asexually.Humans are often the final host and less frequently the intermediate host.
  • Contact helminthiasis- a disease in which parasites are released from the human body when they are mature or almost mature, as a result of which it is possible to infect another person or reinfect them (self-infestation, 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).

By place of residence of the owner (person):

  • External parasites(mosquitoes, horseflies, leeches, lice).
  • Internal parasites(helminthiasis):
    • roundworms (nematodes - roundworms, filaria, whipworms, pinworms, strongyloids, hookworms, trichinella);
    • flatworms:
      • trematodes (worms - cat worm (opisthorchid), clonorchid, fluke, schistosome);
      • cestodes (tapeworms - bovine and pork tapeworms, dwarf tapeworm, broad tapeworm, echinococcus).
  • Bacteriosis(leptospira, staphylococci, streptococci, shigella).
  • Protozoa or protozoa(amoeba, lamblia, trichomonas, often hosts of chlamydia and the AIDS virus).
  • Mycoses(fungal diseases) - Candida, Cryptococcus, Penicillium.

How parasites enter the human body

You can become infected with parasites not just through dirty hands.The animal's skin carries worm eggs (ascaris and toxocara), Giardia.

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

Puppythrough moist breath, it disperses eggs to a distance of up to 5 meters (a 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 transmitted by flies.

And poorly prepared kebab or homemade lard are a route of trichinosis infection;poorly salted fish, caviar or “stroganina” - opisthorchiasis and tapeworm.

Therefore, there are several ways in which parasites enter the human body:

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

Adaptive properties of parasites:

  • long life expectancy (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 immunodeficiency appears, conditions are created for the penetration of external pathogenic agents, as well as for the “disinhibition” of internal foci of infection);
  • Many types of helminths, getting into the digestive tract, secrete antienzymes, which save them from death;the digestive process is disrupted, toxic allergic reactions of varying severity appear: urticaria, bronchial asthma, atopic dermatitis;
  • development phases (egg, larva, host change);
  • the ability of eggs to survive for years in the external environment;
  • sexual reproduction, during which genetic information is exchanged, this being the highest phase of development, leading to an increase in the heterogeneous population, that is, 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 parasites

Due to the increase in migration processes, the diversity of helminths that parasitize the human body is significantly increasing.Currently, 70 species of parasites are common among the more than 260 that exist.There is a tendency for an increase in infection with enterobiasis, giardiasis, toxocariasis, opisthorchiasis, diphyllobothriasis, tenidosis and echinococcosis.In the countries of Southeast Asia, Africa and Latin America, schistosomiasis and filariasis are common.

"Healthy" people...Many people who lead a healthy lifestyle experience health problems due to the presence of parasites in the body.Improving the body's health (proper nutrition, physical 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 located not only in the gastrointestinal tract, but also in vital organs: brain, heart, lungs, liver, kidneys.

Cause of many diseases

In the course of their life, helminths secrete special substances - toxoids, which are strong poisons and allergens.It is parasites (protozoa, fungi and helminths) that trigger 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, skin problems, headaches, appetite disorders, decreased immunity - these may be signs of current parasitosis.

If not treated...When parasites remain in the human body for a long time, the immune system suffers greatly.In the process of constant struggle with foreign antibodies, exhaustion is reached, that is, the development of secondary immunodeficiency.

Parasitism 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 have you been saved before?For thousands of years, people, eating mainly plant foods, received natural antimicrobial, antiparasitic and antiviral active substances with them.Reducing the consumption of wild plants, fruits, berries, their replacement with cultivated vegetables and fruits, thermal and industrial processing have led to a decrease in the consumption of natural phytoncides and antibiotics.As a result, humans have become easy prey for many microorganisms.The intense development of the pharmaceutical industry that produces antibiotics has led to a decrease in antiparasitic immunity.

Traditional medicine to eliminate parasites in the human body

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

  • often affect only the gastrointestinal forms of the parasites;
  • very toxic to the human body;
  • cause many adverse reactions.

Science doesn't stand still!Intense scientific research into the antibiotic properties of plants is being carried out around the world.In terms of effectiveness, they are not inferior to synthetic antibiotics, but they do not cause side effects characteristic of synthesized drugs.The healing components of plants are complex natural phytoncides that can rid the human body of many parasites at various stages of their development.

Nature!This is what will help us!Preparations of plant origin are much less toxic;if necessary, they can be prescribed in 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 toxic and harmful effects on the human body.As treatment with chemical medications has a negative effect on the body, the ideal solution to the problem of combating parasitic infections is herbal products.