We explored how Vitamin D3 impacts autoimmune thyroiditis, a specific autoimmune disorder. In this study, researchers established a mouse model of experimental autoimmune thyroiditis (EAT) to see how Vitamin D3 could influence this condition. After eight weeks of treatment, they assessed thyroid health and immune response through various methods, including staining tissues and measuring hormone levels.
Our observations revealed that administering Vitamin D3 helped reduce damage to the thyroid and decreased the presence of inflammatory cells within the thyroid. This treatment also led to lower levels of thyroid hormones and autoimmune antibodies in the blood, highlighting its positive effect on thyroid function. Additionally, Vitamin D3 appeared to promote the regulatory T cell (Treg) subset while decreasing the levels of Th17 cells, which are often involved in autoimmune processes.
Mechanistically, the study found that Vitamin D3 triggered specific pathways that influence Treg cell activity and survival. Notably, it activated a signaling pathway involving YAP and JAK/STAT, which are crucial for immune cell regulation. These findings suggest that Vitamin D3 could play a significant role in balancing immune responses in autoimmune thyroiditis, making it a promising candidate for further research and potential treatment strategies.
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9.5
Vitamin D3 aids autoimmune thyroiditis
Supplementation with active vitamin D3 ameliorates experimental autoimmune thyroiditis in mice by modulating the differentiation and functionality of intrathyroidal T-cell subsets.
We observed that vitamin D3 supplementation may play a significant role in managing autoimmune thyroiditis, a condition often marked by thyroid inflammation. In this study, researchers induced autoimmune thyroiditis in female mice and administered vitamin D3 to evaluate its effects on the disease.
After eight weeks of treatment, the results showed a notable reduction in thyroid damage and lower levels of thyroid autoantibodies in the mice receiving vitamin D3. Specifically, the vitamin appeared to inhibit the activity of certain inflammatory immune cells, which are typically elevated in autoimmune conditions. At the same time, it seemed to support the activity of regulatory immune cells that help keep inflammation in check.
This study highlights the potential of vitamin D3 as a therapeutic option to mitigate the effects of autoimmune thyroiditis, suggesting that it could help balance the immune response in affected individuals. As researchers continue to delve into the role of vitamin D in autoimmune disorders, findings like these support the notion that maintaining adequate vitamin D levels might be crucial for immune health.
Read More
9
Vitamin D3 mitigates autoimmune thyroiditis
Supplementation with active vitamin D3 ameliorates experimental autoimmune thyroiditis in mice by modulating the differentiation and functionality of intrathyroidal T-cell subsets.
Our research aimed to understand how vitamin D3 affects autoimmune thyroiditis, particularly in the context of Hashimoto's thyroiditis, which is characterized by low levels of vitamin D3 in patients. We induced a model of autoimmune thyroiditis in female mice and treated them with vitamin D3 to see if it could alleviate the symptoms of this condition.
After 8 weeks of treatment, we observed that vitamin D3 significantly improved the condition of the thyroid in these mice. The inflammation that commonly accompanies autoimmune thyroiditis decreased, and levels of thyroid autoantibodies, which indicate the severity of the disorder, also dropped. Notably, the application of vitamin D3 inhibited the activity of harmful immune cells while promoting the function of protective cells, providing a better balance in the immune response.
Overall, our findings suggest that vitamin D3 supplementation could be a promising strategy to manage autoimmune thyroiditis by restoring immune balance and reducing inflammation. This not only enhances our understanding of the disease but also opens up potential avenues for treatment in humans facing similar issues with autoimmune disorders.
Read More
Most Useful Reviews
8.8
Improved health
A good quality vitamin at a high dosage and an adequate price. I take it weekly in winter due to the lack of sunlight in Germany, which has contributed to my autoimmune disorders. Thank you, iHerb, for such a great offer. Capsules here are costly, so this is a brilliant alternative after being homebound.
Read More
8.8
Vitamin D deficiency
When I feel lethargic, fatigued, or have joint pain, I know it's my autoimmune disorder and vitamin D deficiency. Doctors recommend it for everyone as sunlight exposure is minimal. The pill is easy to swallow, but the dosage is large, so I suggest consulting a doctor for the right amount.
Read More
9.5
Restored memory
After using the vitamin for four months, I took it bi-weekly. Tests showed my vitamin D levels were excellent. My hair loss decreased significantly, joint pain vanished, and my memory improved. The pills are small, easy to swallow, and I didn’t experience any stomach issues.
Supplementation with active vitamin D3 ameliorates experimental autoimmune thyroiditis in mice by modulating the differentiation and functionality of intrathyroidal T-cell subsets.
We observed that vitamin D3 supplementation may play a significant role in managing autoimmune thyroiditis, a condition often marked by thyroid inflammation. In this study, researchers induced autoimmune thyroiditis in female mice and administered vitamin D3 to evaluate its effects on the disease.
After eight weeks of treatment, the results showed a notable reduction in thyroid damage and lower levels of thyroid autoantibodies in the mice receiving vitamin D3. Specifically, the vitamin appeared to inhibit the activity of certain inflammatory immune cells, which are typically elevated in autoimmune conditions. At the same time, it seemed to support the activity of regulatory immune cells that help keep inflammation in check.
This study highlights the potential of vitamin D3 as a therapeutic option to mitigate the effects of autoimmune thyroiditis, suggesting that it could help balance the immune response in affected individuals. As researchers continue to delve into the role of vitamin D in autoimmune disorders, findings like these support the notion that maintaining adequate vitamin D levels might be crucial for immune health.
Read More
9
Vitamin D3 mitigates autoimmune thyroiditis
Supplementation with active vitamin D3 ameliorates experimental autoimmune thyroiditis in mice by modulating the differentiation and functionality of intrathyroidal T-cell subsets.
Our research aimed to understand how vitamin D3 affects autoimmune thyroiditis, particularly in the context of Hashimoto's thyroiditis, which is characterized by low levels of vitamin D3 in patients. We induced a model of autoimmune thyroiditis in female mice and treated them with vitamin D3 to see if it could alleviate the symptoms of this condition.
After 8 weeks of treatment, we observed that vitamin D3 significantly improved the condition of the thyroid in these mice. The inflammation that commonly accompanies autoimmune thyroiditis decreased, and levels of thyroid autoantibodies, which indicate the severity of the disorder, also dropped. Notably, the application of vitamin D3 inhibited the activity of harmful immune cells while promoting the function of protective cells, providing a better balance in the immune response.
Overall, our findings suggest that vitamin D3 supplementation could be a promising strategy to manage autoimmune thyroiditis by restoring immune balance and reducing inflammation. This not only enhances our understanding of the disease but also opens up potential avenues for treatment in humans facing similar issues with autoimmune disorders.
Read More
9
IgG4-RD case report findings
IgG4-RD-Associated Mikulicz Syndrome Without Classic Systemic Involvement-A Case Report.
We explored an intriguing instance of IgG4-related disease (IgG4-RD) manifesting as Mikulicz syndrome in an 85-year-old male patient. This condition usually involves significant systemic symptoms, yet our patient exhibited primarily local manifestations, specifically bilateral dacryoadenitis and orbital pseudotumor, without major organ complications.
Interestingly, despite normal serum IgG4 levels, which were below 135 mg/dL, the clinical and imaging findings strongly suggested the diagnosis of IgG4-RD. This scenario underscores the importance of undertaking a biopsy for accurate diagnosis. Histopathological examination revealed notable signs, such as a dense lymphoplasmacytic infiltrate and storiform fibrosis, with a considerable percentage of IgG4-positive cells, ultimately confirming our diagnosis.
We observed that treatment with prednisone, alongside azathioprine for long-term control, was effective. To mitigate the risk of glucocorticoid-induced osteoporosis, we added calcium and vitamin D3 supplementation. Remarkably, the patient showed significant clinical improvement within just 24 hours, with resolution of orbital and glandular symptoms over the following year. There was a complete recovery of vision and no relapses, with only minor dry eye as a long-term concern.
This case demonstrates the necessity of considering IgG4-RD even when serum IgG4 levels are normal and highlights the role of histopathology in diagnosis. Furthermore, it showcases the effectiveness of corticosteroids as a first-line treatment in managing this condition.
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9
Calcitriol improves immune regulation
Calcitriol Treated Mesenchymal Stem Cells Modulated Immune Response in Collagen-Induced Rheumatoid Arthritis in BALB/c Mice.
We examined the effects of calcitriol, an active form of vitamin D3, on mesenchymal stem cells (MSCs) in a model of rheumatoid arthritis. To do this, we induced arthritis in BALB/c mice and divided them into three groups: those without treatment, those treated with untreated MSCs, and those treated with calcitriol-exposed MSCs.
After conducting our experiments, we found that MSCs treated with calcitriol demonstrated improved regulatory functions and inhibited inflammatory responses more effectively than untreated MSCs. Specifically, we observed differences in the behavior of immune cells, with calcitriol-treated cells showing reduced levels of certain inflammatory cytokines, like INF-γ and IL-17, while increasing beneficial cytokines such as IL-4, IL-10, and TGF-β.
These findings suggest that vitamin D3 may play an important role in moderating the immune response in autoimmune conditions like rheumatoid arthritis, potentially offering a pathway for more effective treatment options.
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9
Vitamin D3 aids immune balance
1,25(OH)D-treated mouse bone marrow-derived dendritic cells alleviate autoimmune hepatitis in mice by improving TFR/TFH imbalance.
We aimed to understand how vitamin D3, specifically its active form 1,25(OH)D, affects autoimmune hepatitis (AIH), a complex autoimmune disease that causes liver damage. Researchers focused on the role of a special type of immune cell known as dendritic cells (DCs), which are influenced by vitamin D3 to promote a more balanced immune response.
Through our investigation using a mouse model, we observed that injecting these vitamin D3-modulated dendritic cells, which overexpress a molecule called PD-L1, significantly lessened liver injury and severity of autoimmune hepatitis. This treatment appeared to correct the imbalance between two types of T cells: regulatory T cells (TFR) and follicular helper T cells (TFH).
By increasing the TFR population and restoring their balance with TFH cells, vitamin D3 treatment helped regulate this immune response. Additionally, the infusion boosted the production of anti-inflammatory substances while decreasing those linked to inflammation, suggesting a potential new avenue for treating autoimmune hepatitis. Overall, these findings indicate that vitamin D3-modulated dendritic cells could be a promising strategy for managing autoimmune conditions like AIH.
A good quality vitamin at a high dosage and an adequate price. I take it weekly in winter due to the lack of sunlight in Germany, which has contributed to my autoimmune disorders. Thank you, iHerb, for such a great offer. Capsules here are costly, so this is a brilliant alternative after being homebound.
Read More
8.8
Vitamin D deficiency
When I feel lethargic, fatigued, or have joint pain, I know it's my autoimmune disorder and vitamin D deficiency. Doctors recommend it for everyone as sunlight exposure is minimal. The pill is easy to swallow, but the dosage is large, so I suggest consulting a doctor for the right amount.
Read More
9.5
Restored memory
After using the vitamin for four months, I took it bi-weekly. Tests showed my vitamin D levels were excellent. My hair loss decreased significantly, joint pain vanished, and my memory improved. The pills are small, easy to swallow, and I didn’t experience any stomach issues.
Read More
9.5
Strengthened immunity
Vitamin D3 is crucial for combating autoimmune inflammation. I buy it for my elderly parents in Kazakhstan, where sun exposure is limited. They take it twice a week, which is convenient and effective. Their immunity and vitamin D levels have improved remarkably.
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9.5
Health improvements
A fantastic dosage of vitamin D! I recommend one capsule per week for maintenance, or every other day for severe deficiencies. Our family has seen significant health improvements, including stronger bones and better skin. It’s essential for our immunity!
An autoimmune disorder occurs when the body's immune system mistakenly attacks its own healthy cells and tissues, believing them to be foreign invaders, such as bacteria or viruses. This reaction can lead to inflammation, tissue damage, and impaired function of the affected organs. There are over 80 known autoimmune diseases, including rheumatoid arthritis, lupus, multiple sclerosis, and type 1 diabetes, each with its own specific symptoms and treatment options. The exact cause of these disorders is still unclear, but a combination of genetic, environmental, and hormonal factors is believed to play a role in their development.
Diagnosis of autoimmune disorders often involves a combination of physical examinations, assessment of symptoms, blood tests, and imaging studies to evaluate organ involvement. Treatment typically focuses on managing symptoms and controlling the immune response using medications such as corticosteroids, immunosuppressants, and biologics. In addition to medication, lifestyle modifications, such as stress management and a balanced diet, can be beneficial in managing symptoms. If you suspect you have an autoimmune condition, it's important to consult a healthcare professional for proper evaluation and tailored treatment options.
Vitamin D is a fat-soluble vitamin that's essential for maintaining healthy bones and teeth, supporting immune system function, and facilitating normal cell growth and development. It plays a crucial role in calcium absorption in the gut, which is vital for bone health. Unlike most vitamins, our bodies can produce Vitamin D when exposed to sunlight, specifically UVB rays, which is why it’s often referred to as the "sunshine vitamin." However, depending on your geographical location, lifestyle, and skin type, getting sufficient Vitamin D from the sun alone can be challenging, particularly during the winter months.
In addition to sunlight, Vitamin D can be obtained from certain foods such as fatty fish (like salmon and mackerel), fish liver oils, and fortified foods like milk and cereals. Some individuals may also consider supplements, especially if they're at risk for deficiency. Insufficient vitamin D levels are linked to various health issues, including rickets in children, osteomalacia in adults, and even an increased risk of chronic diseases. Regularly checking your vitamin D levels and consulting with a healthcare professional can help ensure you're meeting your needs for optimal health.
Research suggests that Vitamin D may play a role in modulating the immune system, which could be beneficial for individuals with autoimmune disorders. Vitamin D is known to help regulate immune function, and a deficiency may contribute to the development or exacerbation of autoimmune conditions. Some studies have found correlations between low Vitamin D levels and increased severity of autoimmune diseases, such as multiple sclerosis, rheumatoid arthritis, and lupus. This has led some healthcare professionals to recommend monitoring Vitamin D levels and considering supplementation, particularly in populations at risk for deficiencies.
However, it is crucial to approach supplementation with caution. While some evidence supports the use of Vitamin D to aid in immune regulation, more research is needed to establish definitive cause-and-effect relationships and optimal dosages. As with any supplement, it is essential to consult with a healthcare provider before starting Vitamin D, especially for those with autoimmune disorders or those currently taking medication. They can provide personalized recommendations based on individual health needs and current research findings.
Users report varying timelines for experiencing results when taking vitamin D supplements for autoimmune disorders. Many have noted improvements in their symptoms after approximately three to four months of consistent use. For instance, one user mentioned that after four months of taking the vitamin, they saw significant benefits such as decreased hair loss and improved memory (Read Review). Another user echoed a similar timeframe, stating that after three months of taking a weekly dosage, they observed notable improvement in their vitamin D levels and overall health (Read Review), while another highlighted the benefits they experienced within only a week (Read Review).
Optimal results may require continuous monitoring and adjustment of dosage under professional guidance to ensure that levels reach a therapeutic range suitable for managing autoimmune conditions. Illicit use without adequate medical supervision might lead to variability in effectiveness, as seen in some user experiences (Read Review). While individual responses can certainly vary, aiming for at least a few months of consistent intake can be a beneficial approach for those managing autoimmune disorders.
Vitamin D supplementation is gaining attention for its potential beneficial effects on various autoimmune disorders, with several studies lending support to this idea. For instance, research has shown that vitamin D3 supplementation can significantly improve conditions such as autoimmune thyroiditis and Graves' disease by reducing thyroid damage and autoantibody levels in affected patients [15][3]. Additionally, a study indicated that maintaining adequate vitamin D levels might improve muscle health in patients with idiopathic inflammatory myopathies, a type of autoimmune disorder, highlighting its role in physical fitness and overall health [14].
Furthermore, investigations into rheumatoid arthritis and multiple sclerosis have revealed that vitamin D can modulate immune responses and potentially alleviate symptoms associated with these conditions [17][6]. While compelling anecdotal and clinical evidence suggests a protective and regulatory role for vitamin D in autoimmune disorders, the nuances of its effectiveness vary by condition. Some studies, however, have indicated that vitamin D might not significantly lower thyroid autoantibody levels in Hashimoto's thyroiditis and autoimmune hepatitis, pointing to a need for careful consideration regarding its use in these contexts [9][18]. Overall, while the potential for vitamin D supplementation in managing autoimmune disorders is promising, further research is required to establish standardized treatment protocols across diverse conditions.
Based on user reviews, many individuals have reported significant improvements in their symptoms when incorporating vitamin D supplements into their routines, particularly those with autoimmune disorders. A common theme among users is the alleviation of joint pain, fatigue, and lethargy, with numerous reviews noting these benefits shortly after starting supplementation. For instance, one user experienced a remarkable reduction in hair loss and joint pain after four months of consistent use, alongside a boost in memory and overall health (Read Review). Another user noted that after switching to a weekly dosage, they felt energized and experienced a significant reduction in bone pain and improved immunity (Read Review).
In addition to physical symptoms, users have also reported improvements in overall health metrics, such as enhanced immune function and better vitamin D levels confirmed by testing. One reviewer mentioned how their elderly parents in Kazakhstan benefited from twice-weekly doses, leading to remarkable improvements in immunity and vitamin D status (Read Review). While individual experiences may vary, many users advocate for the clarity of results, highlighting how the supplement helped correct deficiencies and improve their quality of life.
Based on user reviews, many individuals have reported positive experiences when combining vitamin D supplements with other supplements while managing autoimmune disorders. One reviewer mentioned that using vitamin D3 alongside vitamin K2 and beta carotene significantly improved their energy levels and reduced pain associated with their condition (Read Review). This combination seems to facilitate better calcium management and enhance overall well-being, particularly in individuals sensitive to insufficient vitamin D absorption from sunlight or food sources.
Users also highlighted that high doses of vitamin D3 can work synergistically with other supplements to support the immune system, particularly in those with autoimmune disorders. For instance, another reviewer emphasized that taking vitamin D3 along with regular lab tests made them feel secure in managing their health as they navigated their autoimmune condition (Read Review). It's clear that for many, the thoughtful combination of vitamin D with other nutrients not only addresses deficiencies but also promotes a significant enhancement in their quality of life.
Based on user reviews, many individuals with autoimmune disorders suggest that a high dosage of Vitamin D is beneficial for managing their health. Several users reported taking one capsule per week as a routine maintenance dose, with some opting for a bi-weekly schedule. For instance, one user mentioned that taking one capsule weekly has significantly improved their immunity, alleviated numbness and pain, and enhanced overall well-being (Read Review). Others recommended a higher dosage, such as 50,000 IU, especially for those with severe deficiencies or specific health conditions like MS (Read Review).
Users emphasize the importance of consulting a doctor for personalized recommendations, as dose needs can vary greatly depending on individual health requirements (Read Review). Many experienced significant improvements after consistent supplementation, including better energy levels, reduced pain, and enhanced mood (Read Review). Ultimately, while a dose of one capsule weekly appears common, many report that higher dosages tailored to specific health needs may yield the best results for those managing autoimmune disorders.
9.5
Restored memory
After using the vitamin for four months, I took it bi-weekly. Tests showed my vitamin D levels were excellent. My hair loss decreased significantly, joint pain vanished, and my memory improved. The pills are small, easy to swallow, and I didn’t experience any stomach issues.
7
Monthly dosage effectiveness
Both my sister and I suffered from vitamin D deficiency, and after taking a weekly 50,000 IU pill from my doctor for three months, we saw improvement. Now, I order vitamin D monthly to maintain normal levels, as many in our region also face similar deficiencies.
9.5
Improved immunity
Super! I purchased this on my gynaecologist's advice due to a vitamin deficiency from lack of sunlight. The quality is satisfactory; the ingredients absorb quickly, and the capsule size is convenient. The weekly dosage of one capsule has significantly strengthened my immunity, alleviated my bone pain, and provided a surge of strength and energy. I've recommended it to my friends, all of whom have ordered it and praised its effects.
7.5
Convenient dosing
I ordered six packs due to my satisfaction with this product. A weekly dose suits me better than a daily one.
9.5
Strengthened immunity
Vitamin D3 is crucial for combating autoimmune inflammation. I buy it for my elderly parents in Kazakhstan, where sun exposure is limited. They take it twice a week, which is convenient and effective. Their immunity and vitamin D levels have improved remarkably.
8.8
Alleviated pain
I was impressed with the vitamin quality! After developing post-COVID autoimmune disorder, it alleviated my body aches. Combined with vitamin K2, it improved my energy levels and reduced pain, delivered promptly. I am very grateful for its effectiveness.
9.5
Cancer support
I recommend Now Foods Vitamin D3 50,000 IU to my cancer patients. It's crucial for them, often prescribing one capsule weekly or daily for some. It elevates serul calcidiol levels swiftly and is safe with regular lab tests.
9.5
Satisfactory results
I order this for my husband, who needs 50,000 IU daily due to MS. So far, I am pleased with the outcomes. The manufacturer has consistently provided quality products.
8.8
Vitamin D deficiency
When I feel lethargic, fatigued, or have joint pain, I know it's my autoimmune disorder and vitamin D deficiency. Doctors recommend it for everyone as sunlight exposure is minimal. The pill is easy to swallow, but the dosage is large, so I suggest consulting a doctor for the right amount.
9
Vitamin D3 mitigates autoimmune thyroiditis
Supplementation with active vitamin D3 ameliorates experimental autoimmune thyroiditis in mice by modulating the differentiation and functionality of intrathyroidal T-cell subsets.
Our research aimed to understand how vitamin D3 affects autoimmune thyroiditis, particularly in the context of Hashimoto's thyroiditis, which is characterized by low levels of vitamin D3 in patients. We induced a model of autoimmune thyroiditis in female mice and treated them with vitamin D3 to see if it could alleviate the symptoms of this condition.
After 8 weeks of treatment, we observed that vitamin D3 significantly improved the condition of the thyroid in these mice. The inflammation that commonly accompanies autoimmune thyroiditis decreased, and levels of thyroid autoantibodies, which indicate the severity of the disorder, also dropped. Notably, the application of vitamin D3 inhibited the activity of harmful immune cells while promoting the function of protective cells, providing a better balance in the immune response.
Overall, our findings suggest that vitamin D3 supplementation could be a promising strategy to manage autoimmune thyroiditis by restoring immune balance and reducing inflammation. This not only enhances our understanding of the disease but also opens up potential avenues for treatment in humans facing similar issues with autoimmune disorders.
8
Vitamin D aids Graves' disease therapy
A beneficial levels of 25-hydroxyvitamin D for a decrease in thyrotropin receptor antibody (TRAB) in patients with Graves' disease: a real-world study.
We explored the connection between vitamin D levels and the management of Graves' disease, an autoimmune disorder characterized by overactive thyroid function. Through our research with 171 patients, we aimed to see if pre-treatment levels of 25-hydroxyvitamin D could influence the reduction of thyrotropin receptor antibodies (TRAB) during treatment.
Our study divided patients into three groups based on their vitamin D levels: less than 20 ng/mL, between 20-29 ng/mL, and 30 ng/mL or more. The findings were quite revealing. We observed that patients with vitamin D levels ranging from 20 to 29 ng/mL experienced significantly higher rates of TRAB remission and negative conversion compared to the other groups during follow-ups at 6, 12, and 24 months.
This suggests that maintaining vitamin D within this specific range can be beneficial for patients newly diagnosed with Graves' disease as they undergo antithyroid treatment. However, we noted that vitamin D levels did not seem to affect the normalization of free triiodothyronine and free thyroxine levels over time.
In summary, our findings emphasize the potential role of adequate vitamin D levels in supporting immune regulation and therapeutic outcomes in autoimmune disorders, particularly Graves' disease.
7
Vitamin D's role in muscle health
Vitamin D and its receptor in skeletal muscle are associated with muscle disease manifestation, lipid metabolism and physical fitness of patients with myositis.
We investigated how vitamin D levels and its receptor in muscle tissue relate to autoimmune disorders like idiopathic inflammatory myopathies (IIM). By examining 46 patients alongside 67 healthy controls, we sought to understand the connection between vitamin D, muscle function, and disease symptoms.
Over the course of our research, we observed that patients with IIM had reduced levels of biologically active vitamin D in their blood. This suggests that these patients might struggle with how their bodies metabolize vitamin D. Interestingly, regular exercise appeared to modify the blood vitamin D levels and gene expression associated with its receptor and activation enzyme in muscle tissue.
Furthermore, we found that these vitamin D levels and receptor expression correlated with the physical fitness of the IIM patients, as well as with the muscle's lipid metabolism and various disease manifestations. This indicates that maintaining adequate vitamin D levels could potentially play a role in improving muscle health in those affected by autoimmune conditions.
9
Calcitriol improves immune regulation
Calcitriol Treated Mesenchymal Stem Cells Modulated Immune Response in Collagen-Induced Rheumatoid Arthritis in BALB/c Mice.
We examined the effects of calcitriol, an active form of vitamin D3, on mesenchymal stem cells (MSCs) in a model of rheumatoid arthritis. To do this, we induced arthritis in BALB/c mice and divided them into three groups: those without treatment, those treated with untreated MSCs, and those treated with calcitriol-exposed MSCs.
After conducting our experiments, we found that MSCs treated with calcitriol demonstrated improved regulatory functions and inhibited inflammatory responses more effectively than untreated MSCs. Specifically, we observed differences in the behavior of immune cells, with calcitriol-treated cells showing reduced levels of certain inflammatory cytokines, like INF-γ and IL-17, while increasing beneficial cytokines such as IL-4, IL-10, and TGF-β.
These findings suggest that vitamin D3 may play an important role in moderating the immune response in autoimmune conditions like rheumatoid arthritis, potentially offering a pathway for more effective treatment options.
7
Vitamin D's role in MS management
Epstein-Barr virus, vitamin D and the immune response: connections with consequences for multiple sclerosis.
We explored how vitamin D interacts with other factors like Epstein-Barr virus (EBV) infection to influence autoimmune disorders, particularly multiple sclerosis (MS). Research shows that individuals who are deficient in vitamin D are at a greater risk of developing MS. This suggests that vitamin D could play a protective role, potentially helping to modulate the immune response in these patients.
In our observations, adequate levels of vitamin D appear to support a balanced immune system. This balance is crucial because an overactive immune response can lead to the body attacking its own tissues, as seen in MS. Additionally, studies suggest that vitamin D may enhance the effectiveness of our immune cells, which could provide some level of defense against triggering factors like EBV.
However, while the connection between low vitamin D levels and an increased risk of MS is well-recognized, there is still ongoing debate regarding the direct benefits of vitamin D supplementation in treating MS. We recognize the need for further research to clarify its effectiveness and potential as a therapeutic option.
Overall, vitamin D's interaction with the immune system offers intriguing possibilities, which we believe may lead to new approaches for managing autoimmune disorders.
4
Vitamin D's limited effect on HT
Effects of different supplements on Hashimoto's thyroiditis: a systematic review and network meta-analysis.
We set out to discover how effective vitamin D is in treating autoimmune disorders, specifically in patients with Hashimoto's thyroiditis (HT). Our analysis involved looking at several studies examining various dietary supplements, including selenium and vitamin D, to see how they impact thyroid autoantibody levels and overall thyroid function.
Within the studies we reviewed, vitamin D did not seem to significantly reduce thyroid autoantibody levels like other supplements. In particular, we noted that treatments involving vitamin D, whether alone or in combination with other nutrients, did not show a meaningful effect on reducing thyroid peroxidase autoantibodies (TPOAb) or thyroglobulin autoantibodies (TgAb).
This lack of significant benefit suggests that while vitamin D is often included in treatment plans for autoimmune disorders, it may not play a critical role in alleviating the symptoms or autoimmunity associated with HT. Therefore, it might be wise for those seeking supplemental help to consider other options, particularly selenium, which showed more promising results.
8
Vitamin D3's clinical implications in AIH
Autoimmune Hepatitis and Vitamin D Deficiency: A Nationwide Perspective.
In our exploration of vitamin D3's role in autoimmune hepatitis (AIH), we conducted a thorough study using a large patient database to highlight how vitamin D deficiency affects those struggling with this condition.
We found that individuals with low levels of vitamin D, especially those below the threshold of 20 ng/mL, faced significantly worse health outcomes compared to their counterparts who had sufficient vitamin D levels. This included a staggering increase in the likelihood of all-cause mortality, hospitalizations, and even the need for liver transplants.
While the study set out to uncover the potential benefits of vitamin D3 treatment, it lacked the necessary details to isolate its direct effects. Despite confirming that vitamin D deficiency is linked to serious complications in AIH, we were unable to draw firm conclusions regarding how vitamin D3 treatment might specifically improve patient outcomes.
Overall, our findings signal a compelling call for further research into the benefits of vitamin D3 supplementation for individuals battling autoimmune diseases like AIH, paving the way for possibly critical health interventions.
References
Vernerová L, Vokurková M, Laiferová NA, Nemec M, Špiritović M, et al. Vitamin D and its receptor in skeletal muscle are associated with muscle disease manifestation, lipid metabolism and physical fitness of patients with myositis. Arthritis Res Ther. 2025;27:48. doi:10.1186/s13075-025-03516-9
Wang CM, Chen YJ, Yang BC, Yang JW, Wang W, et al. Supplementation with active vitamin D3 ameliorates experimental autoimmune thyroiditis in mice by modulating the differentiation and functionality of intrathyroidal T-cell subsets. Front Immunol. 2025;16:1528707. doi:10.3389/fimmu.2025.1528707
Chen X, Zhang Y, Lin L, Chen Y, Shen X, et al. A beneficial levels of 25-hydroxyvitamin D for a decrease in thyrotropin receptor antibody (TRAB) in patients with Graves' disease: a real-world study. BMC Endocr Disord. 2025;25:14. doi:10.1186/s12902-024-01823-x
Rafati A, Ramezani R, Esmaeili Gouvarchin Ghaleh H, Bahrami S, Alvanegh AG, et al. Calcitriol Treated Mesenchymal Stem Cells Modulated Immune Response in Collagen-Induced Rheumatoid Arthritis in BALB/c Mice. Transplant Proc. 2025;57:355. doi:10.1016/j.transproceed.2024.12.020
Casas R, Tompa A, Åkesson K, Teixeira PF, Lindqvist A, et al. Redosing with Intralymphatic GAD-Alum in the Treatment of Type 1 Diabetes: The DIAGNODE-B Pilot Trial. Int J Mol Sci. 2025;26. doi:10.3390/ijms26010374
Rasheed A, Khan G. Epstein-Barr virus, vitamin D and the immune response: connections with consequences for multiple sclerosis. Front Immunol. 2024;15:1503808. doi:10.3389/fimmu.2024.1503808
Wu R, Li Y, Peng H, Yang Z, Wang Y, et al. Association Between Serum Trace Elements Level and Alopecia Areata: A Systematic Review and Meta-Analysis. J Cosmet Dermatol. 2025;24:e16740. doi:10.1111/jocd.16740
Hijjawi N, Tout FS, Azaizeh B, Aljaafreh B. The role of vitamins D, B12, C, and K in modulating inflammation and disease management in rheumatoid arthritis: a comprehensive review. Clin Rheumatol. 2025;44:591. doi:10.1007/s10067-024-07285-9
Peng B, Wang W, Gu Q, Wang P, Teng W, et al. Effects of different supplements on Hashimoto's thyroiditis: a systematic review and network meta-analysis. Front Endocrinol (Lausanne). 2024;15:1445878. doi:10.3389/fendo.2024.1445878
Balshi A, Leuenberger G, Dempsey J, Baber U, Sloane JA. Glucagon-like peptide-1 agonist safety and efficacy in a multiple sclerosis cohort. Mult Scler Relat Disord. 2025;93:106229. doi:10.1016/j.msard.2024.106229
Mourelatou NG, Kounatidis D, Jude EB, Rebelos E. Vitamin D Supplementation as a Therapeutic Strategy in Autoimmune Diabetes: Insights and Implications for LADA Management. Nutrients. 2024;16. doi:10.3390/nu16234072
Huo R, Yang Y, Wei C, Huo X, Meng D, et al. Vitamin D affects antiphospholipid syndrome by regulating T cells (Review). Int J Mol Med. 2025;55. doi:10.3892/ijmm.2024.5471
Kilani Y, Alsakarneh S, Madi MY, Mosquera DAG, Ferreira MN, et al. Autoimmune Hepatitis and Vitamin D Deficiency: A Nationwide Perspective. Aliment Pharmacol Ther. 2025;61:682. doi:10.1111/apt.18438
Vernerová L, Vokurková M, Laiferová NA, Nemec M, Špiritović M, et al. Vitamin D and its receptor in skeletal muscle are associated with muscle disease manifestation, lipid metabolism and physical fitness of patients with myositis. Arthritis Res Ther. 2025;27:48. doi:10.1186/s13075-025-03516-9
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