Lupus and Your Gut: Inflammation, the Microbiome and Healing Through Plant Based Foods

By Anca Vereen | Integrative Dietitian + Somatic Psychotherapist

If you have lupus, or suspect something autoimmune is driving your chronic fatigue, joint pain, brain fog and skin changes, one of the most important conversations happening in the research right now is about your gut which is directly linked to anything autoimmune related

Your digestive system houses approximately 70 % of your immune cells, produces neurotransmitters that regulate your mood and energy, and maintains a barrier between the outside world and your bloodstream that determines, in large part, how inflamed your body becomes on any given day. When that barrier is compromised and the community of microorganisms living within it falls out of balance, the consequences for autoimmune conditions like systemic lupus erythematosus are increased with a growing and compelling body of peer-reviewed research confirming that gut health sits at the very centre of lupu and autoimmune disease activity.

What Lupus Is Doing in Your Body

Systemic lupus erythematosus, known as SLE, is an autoimmune condition in which the immune system loses its ability to distinguish between foreign invaders and your own healthy tissues. It begins attacking your joints, skin, kidneys, brain, lungs and blood vessels, creating waves of inflammation that ripple through the entire system. Lupus affects women at a rate nine times higher than men, with the majority of diagnoses occurring between the ages of 15 and 45. More than 20,000 Australians are estimated to be living with it.

The butterfly rash across the cheeks and nose, the bone-deep exhaustion, the joint pain that moves around the body, the hair loss, the brain fog and the photosensitivity combine into a picture that is complex, deeply personal and frequently misunderstood by the conventional medical system.

What the research is now illuminating is that much of this complexity originates, at least in part, in the gut.

The Gut Microbiome and Lupus: What the Science Shows

A 2025 study published in Gut Pathogens found that patients with SLE showed significantly lower gut bacterial richness and diversity compared to healthy volunteers. The researchers found measurable evidence of dysbiosis, which is an imbalance in the microbial community of the digestive tract, alongside elevated markers of gut permeability across all levels of disease activity.¹

A 2025 systematic review published in Microorganisms confirmed that alterations at the level of microbial phyla are consistently observed in SLE. Elevated Proteobacteria and a reduced Firmicutes-to-Bacteroidetes ratio, alongside decreased microbial diversity overall, appear as recurring findings across multiple studies. The researchers identified that specific bacterial species, particularly Ruminococcus gnavus and Bacteroides thetaiotaomicron, play direct roles in lupus nephritis, a serious lupus complication affecting the kidneys.²

Research from NYU Grossman School of Medicine published in Frontiers in Immunology found that Ruminococcus gnavus, a bacterial strain consistently elevated during lupus flares, triggers intestinal permeability through a mechanism involving zonulin, a protein that regulates the tight junctions of the gut lining. The level of lupus-induced intestinal permeability correlated directly with anti-DNA autoantibodies, which are biomarkers of active lupus disease. When the researchers targeted the zonulin pathway specifically, gut permeability was fully reversed, offering a direct mechanistic link between gut barrier function and lupus autoimmunity.³

A 2022 systematic review published in BioMed Research International found that diet significantly influences gut microbiome diversity in SLE patients, and that the composition and activity of the gut microbiome is associated with disease activity. The researchers concluded that an appropriate dietary pattern in SLE can improve body homeostasis, prevent medication side effects, increase periods of remission and improve both physical and mental wellbeing.⁴

What all of this tells us is both confronting and empowering. Your gut microbiome is actively participating in your lupus. And the single most powerful lever you have for modifying your microbiome is what you eat.

Leaky Gut, Lupus and the Immune Cascade

Leaky gut refers to increased intestinal permeability, a state in which the tight junctions between the cells lining your gut wall become compromised, allowing bacteria, bacterial fragments and inflammatory compounds to cross into your bloodstream. Your immune system, encountering these substances where they should never be, mounts an inflammatory response that becomes chronic and systemic.

Research from the Lupus Research Alliance published in 2025 found that gut bacteria called Enterococcus gallinarum, when they escape the intestinal barrier, activate Th17 immune cells that drive inflammation and stimulate the production of IgG3 autoantibodies, contributing directly to disease flares and the chronic immune dysregulation that characterises lupus.⁵

A landmark review in Gut by Dr Michael Camilleri established clear mechanisms by which leaky gut contributes to autoimmune conditions, identifying the signalling pathways through which intestinal permeability drives systemic inflammation.⁶

The clinical implication here is significant. If you are living with lupus and your gut is compromised, you are dealing with an immune education problem. Your immune system is being repeatedly exposed to antigens that amplify the autoimmune response, and that exposure is happening in your gut every single day. Healing the gut lining, restoring microbial diversity and removing the triggers that perpetuate intestinal permeability are therefore not peripheral concerns in lupus management. They sit at the centre of the work.

The Nutrients Lupus Depletes and Why You Need to Correct Them

Lupus creates nutrient deficiencies through multiple mechanisms simultaneously. Chronic inflammation accelerates the consumption of antioxidants. Medications, particularly corticosteroids, deplete specific vitamins and minerals. Digestive dysfunction reduces absorption. Kidney involvement alters the metabolism of several key nutrients.

• Vitamin D functions as a powerful immune modulator. Multiple studies confirm that vitamin D deficiency is more prevalent in lupus patients than in the general population, and that lower vitamin D levels correlate with higher disease activity. Sun avoidance, often necessary due to photosensitivity in lupus, compounds this deficiency significantly.
• Magnesium is required for over 300 enzymatic reactions in the body, including those that regulate the inflammatory cascade. Chronic stress and the use of corticosteroids both accelerate magnesium depletion. Low magnesium is consistently associated with elevated C-reactive protein, a primary marker of systemic inflammation.
• Vitamin A has been shown in research to decrease inflammation specifically in lupus, supporting healthy skin, bones and immune regulation. It is found abundantly in kale, spinach, sweet potato, carrot, broccoli, pumpkin and mango.⁷
• Vitamin C regulates immune function and prevents further tissue damage. Research confirms it supports the body's ability to neutralise the free radical burden that comes with active inflammation.⁷
• B vitamins, particularly B6 and folate, have been identified as potentially protective against lupus symptom occurrence. B12 requires particular attention for anyone with gut absorption issues, which in lupus is common.⁷
• Zinc supports immune regulation and the integrity of the gut lining. Zinc deficiency promotes the kind of intestinal permeability that accelerates autoimmune activity.
• Omega-3 fatty acids, specifically EPA and DHA, have demonstrated consistent anti-inflammatory effects in autoimmune conditions across multiple clinical trials. Flaxseed, hemp seeds and walnuts provide plant-based sources daily.
• Calcium demands attention in lupus, particularly for women on corticosteroid therapy, given the elevated risk of bone loss, osteopenia and osteoporosis associated with both the disease and its conventional treatment.⁷

Understanding which of these nutrients your body is currently depleted in requires proper clinical assessment, not guesswork.

What to Eat: A Plant-Based Anti-Inflammatory Framework for Lupus

Research consistently points toward a whole food, plant-forward anti-inflammatory dietary pattern as the most supportive approach for lupus. A 2022 systematic review found that a Mediterranean-style diet high in fibre reduced cardiovascular disease risk and inflammatory markers, and improved physical wellbeing in SLE patients.⁴

• Prioritise plant diversity. Every different plant food you eat feeds a different species of beneficial bacteria in your gut. Research on microbiome health consistently shows that diversity of plant foods is one of the strongest predictors of microbial diversity, and microbial diversity is protective in autoimmune conditions. Aim for at least 30 different plant foods across a day. Thats right I know that it sounds like a lot but this is achievable with personalised nutrition advice.
• Make legumes your protein foundation. Legumes are among the most powerful foods for gut microbiome restoration. They feed the short-chain fatty acid-producing bacteria that maintain the integrity of your gut lining, reduce systemic inflammation and regulate immune function. Lentils, chickpeas, black beans and kidney beans all belong in your daily meals. In my experience legumes although there are proponents to suggest otherwise have never been a triggering food for any of my clients. These are introduced gradually once the gut interactivity and power is restored, and cooked and combined in ways that enhances their nutrient dense and fibre effects. To learn how about how to optimise legume intake please visit www.plantfullyme.com for more advice.
• Eat your greens in abundance. Dark leafy greens including kale, silverbeet, spinach, rocket and broccoli provide calcium, magnesium, folate, vitamin K, antioxidants and fibre simultaneously. They support the gut lining, reduce inflammatory load and nourish the immune-regulating microorganisms that lupus dysbiosis specifically depletes.
• Eat a rainbow of fruit every day. Berries in particular, including blueberries, raspberries, blackberries and strawberries, carry potent antioxidant and anti-inflammatory properties. Research has identified polyphenols in berries as having direct microbiome-modulating effects, increasing the abundance of beneficial bacterial strains while reducing pathogenic ones.
• Use herbs, turmeric and ginger generously. The curcumin in turmeric and the gingerols in ginger have well-documented anti-inflammatory effects. They reduce the production of pro-inflammatory cytokines and support liver detoxification, which becomes important when the body is managing both active inflammation and medication.
• Hydrate deeply and consistently. A well-hydrated body maintains mucosal integrity throughout the digestive tract, supports lymphatic flow and facilitates the clearance of inflammatory compounds. Begin each day with water before anything else.

What Drives Lupus Flares: The Evidence

Research from the University of Newcastle involving 101 Australian women with lupus identified stress, infection and UV light as the primary patient-perceived flare triggers. The researchers also identified temperature changes, work demands and chemical exposure from household cleaning products as emerging triggers not previously documented in the medical literature.⁸

The mechanism connecting stress to lupus flares is well established. Chronic psychological stress dysregulates the HPA axis and elevates cortisol over time, which paradoxically allows inflammatory pathways to run unchecked while depleting the nutrients the body needs to regulate its immune response. Stress also directly compromises gut barrier integrity, increasing intestinal permeability and therefore the immune cascade that drives autoimmune activity.

This is why addressing the nervous system alongside nutrition produces results that nutrition alone cannot achieve. The gut and the nervous system are in constant bidirectional communication. Healing one without attending to the other produces partial results at best.

To this list I will add any chlorinated and fluoridated water, gluten and dairy, sugar, alcohol, coffee, spicy foods, fermented foods and any foods sprayed with chemicals like pesticides and herbicides especially roundup. This is heavily sprayed on grains and legumes which is now acknowledged to be one of the main causes for your reactivity, intestinal permeability, inflammation and nutrient deficiencies.

What to do to manage lupus

The short of it, is that remission is possible when the body receives the right information and everyone's journey is unique. There are however some fundamentals that all autoimmune disease suffers should implement. Starting with fixing your gut and correct for existing nutrient deficiencies which is a must do. The work on your diet and ensure you eat organic, filter your water, supplement under the supervision of an integrative dietitian. Optimise your sleep because this is where most of your healing lives and move daily. Aim to spend ample time grounded in nature and ensure deal with your unresolved, trauma, unprocessed emotions and inner and our conflict because they are the silent drivers that stress and deplete your body. There is obviously a lot more to include but this is where personalised advice is key for health and healing.

To reduce overwhelm which is common when already fatigued and unwell ensure you work with a health professional that understands you and have experience supporting you as a whole. Implement on step at a time and remember the body when when heard, listened and supported in its healing journey will create extraordinary healing. Stay focused and patient and tweak what you need as you need it.

Anca Vereen is a Melbourne Integrative Dietitian and Somatic Psychotherapist who specialises in trauma, gut health and autoimmune conditions. If you need personalised advice and need to start your very own recovery journey please visit www.ancavereen.com or www.bmelifestyle.com

References

1. Gut microbiota dysbiosis and associated immune response in systemic lupus erythematosus: impact of disease and treatment. Gut Pathogens, 2025. gutpathogens.biomedcentral.com/articles/10.1186/s13099-025-00683-7
2. The complex role of gut microbiota in systemic lupus erythematosus and lupus nephritis: from pathogenetic factor to therapeutic target. Microorganisms, 2025. mdpi.com/2076-2607/13/2/445
3. Silverman GJ, Deng J, Azzouz DF. Sex-dependent Lupus Blautia (Ruminococcus) gnavus strain induction of zonulin-mediated intestinal permeability and autoimmunity. Frontiers in Immunology, 2022. ncbi.nlm.nih.gov/pmc/articles/PMC9405438
4. Putri PZ, Hamijoyo L, Sahiratmadja E. The role of diet in influencing the diversity of gut microbiome related to lupus disease activities: a systematic review. BioMed Research International, 2022. ncbi.nlm.nih.gov/pmc/articles/PMC9825236
5. Gut bacteria may hold the key to new lupus treatments. Lupus Research Alliance, 2025. lupusresearch.org/gut-bacteria-may-hold-the-key-to-new-lupus-treatments
6. Camilleri M. Leaky gut: mechanisms, measurement and clinical implications in humans. Gut, 2019; 68: 1516-1526.
7. Lupus and diet: how nutrition can reduce your symptoms. WellTheory, 2024. welltheory.com/resources/lupus-and-diet-how-nutrition-can-reduce-your-symptoms
8. Squance ML, Reeves GEM, Bridgman H. The lived experience of lupus flares: features, triggers, and management in an Australian female cohort. International Journal of Chronic Diseases, 2014. ncbi.nlm.nih.gov/pmc/articles/PMC4590935