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Immunity and the immune system are very complex and at the same time very important for our health. We would like to present this complex issue in a way that is as accessible as possible and at the same time consistent with current knowledge.

We are surrounded by billions of bacteria, viruses and other disease-causing agents (pathogens)*. For many of them, the human body is like a walking smorgasbord, offering almost unlimited resources that they can use as a source of energy and for their reproduction. Fortunately for us, getting into the human body is not an easy task.

From the point of view of these tiny organisms, humans are a bit like a fortress. The skin is thick and very difficult to penetrate. Additionally, the skin produces various substances that harm the "invaders". Openings such as the eyes, nose and mouth are protected by fluids and sticky mucus that trap harmful attackers. The respiratory system has mechanical protection in the form of respiratory epithelial cilia, tiny hairs that remove particles. Intruders who get as far as the stomach will encounter highly acidic gastric juice, which will kill most of them.

However, despite our fantastic defenses, dangerous intruders can still get through. Some come in with our food and others I can sneak in through my nose. And as we all know, many things can damage our skin. Every day we get some scratches or cuts, and each time this happens, we are exposed to the intrusion of bacteria or viruses. So what is the magical force that keeps us healthy most of the time? We have immunity!

*pathogens that threaten us, apart from bacteria and viruses, also include pathogenic fungi and parasites, which, although they constitute a very large group, are often forgotten. Parasites can be complex multicellular organisms, e.g. tapeworm, or single-celled organisms. The most important single-cell parasites include: plasmodium (plasmodium falciparum) causing malaria, toxoplasma, babesia (tick-borne), and giardia (lamblia).

During the threatening COVID-19 pandemic, strengthen your immunity wisely!

Check how to do it → The Smart Way to Enhance Immune System

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Selected Topics Related to Immununity

Autumn Epidemic



Eight Steps of Child Immunity


How to get protected?

We can take action in two basic directions: (1) the maintenance of innate immunity (non-specific), which constitutes an "early response system" and is necessary for the maintenance of (2) adaptive immunity(specific), primarily through vaccination. How to take care of your immunity? Read more in the tab → Smart Strengthening Immunity

Structure of the Immune System

The immune system is a very complex structure consisting of cells, tissues and organs that work together to protect (defend) our body against "foreign" invaders ...

How Immune System Works?

It is one of nature's most fascinating inventions. It easily protects us against billions of bacteria, viruses and pathogens. We don't realize that the immune system ...


Immunodeficiencies are disorders of the immune system that are characterized by a reduced or lack of ability to ...

Maintain Healthy Immune System

If we are not dealing with an immune system disease, it is usually enough to use a few simple ...


The European Medicines Agency (EMA) has approved gene therapy for the treatment of severe combined immunodeficiency due to adesine deaminase deficiency (ADA-SCID), which is the result of a genetic mutation - reports New Scientist. You can read about gene therapy, what it is and its prospects, on the website News Medical Life Sciencies


Source: Memorial Sloan Kettering Cancer Center Library / LibGuides / COVID Impacts / Immune Dysfunction

Detailed information and resources on the long-term health consequences of COVID-19 infection and the broad social impacts of the COVID-19 pandemic.

One of the most concerning long-term effects of COVID-19 is the dysregulation and dysfunction of the immune system.


Source: Nutrients Authors: van Steenwijk H, Bast, A and de Boer A.

Beta-glucans derived from mushrooms are bioactive long-chain polysaccharide compounds, insoluble in water and with immunomodulatory properties. Knowledge of the action and functions of beta-glucans, which have been used in traditional medicine for centuries, is developing thanks to modern immunological and biotechnological methods.


Source: Oncology Reports; Authors: Hiromi Okuyama Akira Tominaga, z Laboratory of Immunology, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka 584-8540, Japan

Spirulina lipopolysaccharides inhibit tumor growth in a Toll-like receptor 4-dependent manner by altering the cytokine milieu from interleukin-17/interleukin-23 to interferon-γ