Where your DNA places you among other people, and the studies behind it.
Not tailored to your result, and not medical advice
Limit Ultraviolet Light Exposure: Ultraviolet light is the best established environmental trigger in lupus, and it can worsen skin lesions as well as set off flares of systemic disease. After UV exposure, skin cells die in greater numbers and are cleared incompletely, and nuclear autoantigens such as Ro/SSA are moved to the outer cell membrane, which contributes to the strong type I interferon signature found in lupus skin lesions. Shade, covering clothing, hats and broad-spectrum sunscreen are the everyday ways to reduce that exposure, and reviewers describe continuous photoprotection as essential for people with lupus. Frontiers in Medicine (PMC)
Quit or Avoid Smoking: In a meta-analysis of nine case-control studies, current smokers had about 1.5 times the odds of systemic lupus compared with never-smokers (OR 1.49, 95% CI 1.06 to 2.08), while former smokers showed no clear excess risk. The same review found that smoking was associated with reduced effectiveness of standard lupus treatments, for skin lesions and for systemic manifestations. This is observational evidence rather than a trial, but the contrast between current and former smokers is consistent with stopping being worthwhile. Autoimmunity Reviews (PubMed)
Limit Silica Dust at Work: Respirable crystalline silica, the fine dust thrown off by cutting stone, concrete, brick and engineered quartz, is a recognized risk factor for systemic autoimmune disease. In a Danish cohort of about 3 million workers followed from 1979 to 2015, risk rose with cumulative exposure in men, and the lupus incidence rate ratio was 1.09 per 50 micrograms per cubic meter-years (95% CI 1.01 to 1.17). At the highest exposure level the lupus estimate was not statistically significant, unlike those for systemic sclerosis and rheumatoid arthritis, and the estimates in women were inconclusive because few were heavily exposed. Where this dust is part of the job, wet cutting, local extraction and properly fitted respiratory protection are the standard controls. International Journal of Epidemiology (PMC)
Stay Physically Active: A 2023 Cochrane review pooled 13 randomised trials of exercise in lupus covering 540 participants. Exercise probably results in little to no difference in disease activity compared with education or relaxation therapy (moderate-certainty evidence), and no serious adverse events were reported, though the reviewers noted harms were poorly recorded. Benefits on fatigue and functional capacity were not confirmed: that evidence was low to very low certainty, from small trials mostly lasting 12 weeks or less. The fair reading is that activity appears safe in lupus rather than proven to relieve its symptoms. Cochrane Database of Systematic Reviews (PMC)
Be Skeptical of Diet Claims: This is the honest weak spot: no diet has been shown to prevent lupus. A review of environmental risk factors found no association between overall Western or prudent dietary patterns and lupus risk in the US Nurses' Health Studies, and no clear protective effect from vitamin D intake in food or supplements. The Black Women's Health Study did link a pattern high in carbohydrate and low in monounsaturated, saturated and trans fats to higher risk, but that is a single observational finding rather than settled evidence. Eating well is worth doing for general health, and it is not established as lupus prevention. Rheumatic Disease Clinics of North America (PMC)
How much of this is genetic?
Genetics explains 45% of why people differ in this trait. The rest is environment, daily habits and chance.
Heritability estimate: Twin and family heritability estimates for SLE (~44-66%); herit_hint 45
Background and further reading
Systemic lupus erythematosus (SLE), commonly called lupus, is a chronic autoimmune disease in which the immune system produces antibodies against the body's own tissues, driving inflammation that can affect the skin, joints, kidneys, blood cells, heart, lungs, and nervous system. It follows a relapsing-remitting course, with flares of active disease alternating with quieter periods. Lupus is far more common in women than men, with roughly nine female cases for every male case, and onset typically occurs between the teens and forties. Presentations vary widely, from mild joint and skin involvement to serious organ complications such as lupus nephritis.
Genetic Basis: Lupus is strongly heritable and highly polygenic. Twin studies show substantially higher concordance in identical than fraternal twins, and family history is one of the strongest known risk factors. Genome-wide association studies have identified more than a hundred risk loci. The largest single contribution comes from the HLA class II region (including HLA-DRB1), reflecting the disease's basis in adaptive immunity. Other well-replicated genes include IRF5 and STAT4 in interferon signaling, BLK and BANK1 in B-cell function, PTPN22 in immune-cell signaling, ITGAM, and TNFAIP3. Rare loss-of-function variants in early complement components such as C1q and C4 confer very high risk by impairing clearance of cellular debris.
Environmental and Other Factors: Genetics sets susceptibility, but environmental and hormonal factors influence whether and when disease appears. Ultraviolet light from sun exposure is a well-established trigger of skin and systemic flares. Cigarette smoking, certain infections such as Epstein-Barr virus, some medications (drug-induced lupus), and hormonal factors are also associated with risk or flares, consistent with the strong female predominance. A polygenic score reflects inherited susceptibility only and does not account for these exposures or predict whether an individual will develop lupus.
The published research behind your score, and the variants it draws on.
1 published score from 1 study
The lupus score combines 1 polygenic score drawn from 1 published study.
These traits are influenced by some of the same genes and variants as this one
Content updated August 2026.
ReadYourDNA provides educational interpretation of DNA data you already have. It is not diagnostic, not a substitute for professional medical advice, diagnosis, or treatment, and is not intended to diagnose, treat, cure, or prevent any disease. Talk to a clinician before acting on any result.
Raw DNA Data Reports for 23andMe & AncestryDNA · About ReadYourDNA · FAQ · Methodology & Science · Pricing · Support and complaints · Legal & Contact · Health Traits · Pharmacogenomics · Carrier Status · Variant Explorer · The Human Karyotype · Privacy Policy · Terms of Service · Accessibility · Consumer Health Data Privacy · Your Privacy Choices · Editorial Standards · Your Data, Checkable · Sample Report · ReadYourDNA and Promethease compared · What is inside a 23andMe raw data file · What is inside an AncestryDNA raw data file · What a chatbot can and cannot do with your raw DNA file · Where a raw DNA file can still be uploaded in 2026
Written, maintained and operated by Martin Pechhacker, sole proprietor, Vienna, Austria. Trade register GISA 40064420. support@readyourdna.com