Immunodeficiency: When Protection is Weakened
Immunodeficiency is a condition in which the body's immune system is weakened and cannot effectively fight off infections and diseases. This can be either a congenital condition or an acquired one, for example, as a result of chronic diseases or their treatment. Patients with conditions such as inflammatory bowel disease (IBD) or autoimmune rheumatic diseases often receive immunosuppressive therapy. While these drugs are necessary to control the underlying disease, they can significantly increase the risk of developing various infections [1, 3, 5, 7].
In such a situation, it is crucial to find safe and effective ways to maintain and strengthen immune defense to minimize risks and improve the quality of life for patients.
Vaccination: A Key Element of Protection
One of the most proven and effective methods for preventing infections in people with weakened immune systems is vaccination. There are effective vaccines capable of providing protection against a multitude of infectious diseases [1, 5]. However, despite increased vulnerability, vaccination rates among patients with immunodeficiency conditions often remain unsatisfactory. For example, data show that patients with IBD are under-vaccinated, which leaves them vulnerable to preventable infections [1, 3, 5].
The reasons for such low vaccination rates are multifaceted:
- Insufficient awareness among physicians (gastroenterologists, general practitioners) regarding the necessity and schedules of vaccination for this group of patients [1, 3, 5].
- Patient concerns regarding the safety and benefits of vaccines against the background of a weakened immune system or the use of immunosuppressive drugs [3].
The active role of the attending physician in informing patients and creating an individualized vaccination schedule is crucial to ensure maximum protection [1, 5]. For patients with rheumatic diseases, there are also recommendations for immunization, although questions regarding the immunogenicity and safety of vaccines during immunosuppressive therapy are still a subject of research and discussion [7].
Overcoming Barriers: Why Vaccination is Important
Despite concerns, vaccination for patients with immunodeficiency is often not just a recommendation, but a vital necessity. Modern vaccines are developed taking into account various clinical situations, and many of them are safe and effective even for people receiving immunosuppressive therapy. It is important to note that research in the field of vaccinology continues, aimed at increasing the safety and efficacy of vaccines. For example, in allergen immunotherapy (AIT), new strategies are being developed, including the use of immunostimulating substances, new adjuvants, and modified allergens to improve the safety and efficacy profile [6]. New approaches are also being studied, such as passive immunization using recombinant IgG4 antibodies [6].
Consulting with a physician will help determine the most appropriate and safe vaccination schedule, taking into account individual health status and medications being taken.
The Role of the Gut and Nutrition in Supporting Immunity
Gut health plays a fundamental role in the functioning of the immune system. The gut microbiome, consisting of trillions of bacteria, actively interacts with immune cells, influencing their development and activity. Maintaining a healthy gut barrier and a balance of microflora can be an important aspect of supporting immunity.
Some studies show the potential of certain metabolites to improve gut health. For example, one study in mice showed that metabolites derived from the bacterial strain Komagataeibacter rhaeticus SLAM-JS1B (isolated from kombucha) significantly improved gut barrier integrity and reduced the expression of pro-inflammatory cytokines in the colon of mice with obesity induced by a high-fat diet [2]. These changes may indirectly contribute to strengthening immune function. However, it is important to emphasize that this study was conducted on animals, and further research is needed to confirm these effects in humans.
Vitamin D is also known for its important immunomodulatory role, and its deficiency is linked to an increased risk and activity of autoimmune diseases, such as multiple sclerosis. The use of high-dose vitamin D as a therapeutic approach has been proposed, but systematic reviews point to the need for caution due to safety concerns and conflicting data on the efficacy of high doses [8]. Therefore, any supplements, especially in high doses, should be taken only under medical supervision.
Caution in Activating Immunity: Risks
It is important to understand that not every "strengthening" or activation of immunity is safe or beneficial. In some cases, excessive or uncontrolled activation of the immune system can lead to serious side effects. A striking example is immunotherapeutic drugs, such as checkpoint inhibitors, used in oncology for the treatment of metastatic melanoma and other types of cancer [4]. These drugs activate the immune system to fight the tumor but can cause immune-related adverse events (irAEs), such as immune-mediated hepatitis, which can be potentially fatal [4]. This example underscores that interfering with the immune system requires deep knowledge and strict medical control to avoid dangerous consequences.
Conclusion and Recommendations
Strengthening immunity in the presence of immunodeficiency is a complex task that requires an individualized and evidence-based approach. The safest and most proven method for preventing infections is timely and adequate vaccination, coordinated with the attending physician. Maintaining a healthy lifestyle, a balanced diet, and possibly supporting gut health also play an important role, although some methods require further research. Always consult with a physician before starting any new supplements or methods of "strengthening" immunity to ensure the safety and efficacy of the chosen strategies.
Sources
- [1] Updates on vaccinating the inflammatory bowel disease patient. https://pubmed.ncbi.nlm.nih.gov/30791761/
- [2] Protective Effects of Komagataeibacter rhaeticus SLAM-JS1B Derived Metabolites in High-Fat Diet-Induced Obesity. https://pubmed.ncbi.nlm.nih.gov/42532965/
- [3] Vaccinations in patients with inflammatory bowel disease. https://pubmed.ncbi.nlm.nih.gov/34116972/
- [4] 18F-FDG PET/CT-visualised immune-related hepatitis after immune checkpoint inhibitor combination treatment in a patient with metastatic melanoma. https://pubmed.ncbi.nlm.nih.gov/42716692/
- [5] Vaccinating the inflammatory bowel disease patient. https://pubmed.ncbi.nlm.nih.gov/25160668/
- [6] Highlights of Novel Vaccination Strategies in Allergen Immunotherapy. https://pubmed.ncbi.nlm.nih.gov/31761116/
- [7] Role of vaccinations and prophylaxis in rheumatic diseases. https://pubmed.ncbi.nlm.nih.gov/26362746/
- [8] Effects of high-dose vitamin D supplementation in patients with multiple sclerosis: A systematic review of efficacy and safety. https://pubmed.ncbi.nlm.nih.gov/42320168/
The information provided in this article is for reference purposes only and cannot replace professional medical advice. Always consult a qualified specialist for diagnosis and treatment.