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Diet as a DMARD? The Evidence Is Still Hard to Swallow
Dietary interventions are rarely taken as seriously as pharmacological therapies in rheumatology. Yet patients ask about them constantly, and an increasing number of studies suggest that nutrition may influence disease outcomes. Two randomized controlled trials presented at EULAR 2026 add to this growing literature in PsA and RA. However, before we start prescribing Mediterranean diets, the data deserve a closer look.
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Does Exercise and Lifestyle Modification Improve RA?
Does exercise or lifestyle modifications reduce the risk of getting rheumatoid arthritis (RA) or change those with early RA?
Infectious Rheumatology (5.15.2026)
Dr. Jack Cush discusses his favorite journal articles from the past week on RheumNow.com.
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Fatigue in SLE
An NIH lupus cohort study looked at fatigue in SLE and found associations with organ damage, obesity, but does not correlate with disease activity in systemic lupus erythematosus (SLE) patients.
Vitamin D in Rheumatic Disease - is it Good Enough?
Vitamin D deficiency or insufficiency of is highly prevalent and has been often associated with inflammatory rheumatic diseases, raising the question of whether inadequate vitamin D status contributes to immune dysregulation, incipient disease, increased disease activity, or poor skeletal outco
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Review of GLP-1 Receptor Agonists in Psoriasis
Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) have transformed cardiometabolic medicine and are now attracting intense interest in inflammatory disorders.
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It's unclear whether GLP-1agonists inmpvove PsA from weight loss or other MoA
74 PsA patients on GLP-1RA vs 74 matched controls (BMI + disease activity matched)
After adjusting for BMI change PROs still improve cDAPSA (-0.4/mo) DAPSA (-0.6/mo) and pain but not SJC, TJC or CRP https://t.co/dcaU2jwbKJ
Aurelie Najm AurelieRheumo ( View Tweet)
DIPSA RCT: diet in PsA
92 pts 3 arms Mediterranean vs DASH low-calorie vs standard advice
Primary takeaway: amount of weight loss matters more than diet!
-All groups lost modest weight 1–2.5 kg
-All improved similarly in DAPSA -4 to -6 wk 24
-No differences for disease https://t.co/U0cxtdl2Yb
Links:
Aurelie Najm AurelieRheumo ( View Tweet)
#OP0112 at #EULAR2026: Real world RISE registry data shows incr use of semaglutide and tirzepatide across RMDs, particularly RA and PsA. Tirzepatide achieved greater weight loss than semaglutide, with ongoing analyses assessing effects on disease activity and function. @RheumNow
Mrinalini Dey DrMiniDey ( View Tweet)
TOGETHER PsA trial
IXE+TIRZEPATIDE TZP vs. IXE alone RCT
Obese or Overweight PsA IR to <3 bioDMARDs
Primary endpoint ≥10% weight & ACR50 wk 36
31.7% IXE+TZP vs. 0.8% for IXE alone
ACR50 IXE+TZP 33.5% & IXE 20.4%, p=0.02)
No clear difference by gender/age/BMI/previous DMARDs https://t.co/zBcfpj2MF6
Links:
Aurelie Najm AurelieRheumo ( View Tweet)
Treating inflammation and obesity in PsA with IXEKIZUMAB AND CONCOMITANT TIRZEPATIDE effective with no new safety signals
OP069 @RheumNow #EULAR2026 https://t.co/rkhYvZWpHn
Jiha Lee JihaRheum ( View Tweet)
TOGETHER-PsA :ACR50 was already significantly higher with IXE+TZP as early as Week 4 (11.1% vs 3.9%, p=0.029). The metabolic and anti-inflammatory effects of GLP-1/GIP agonism may act synergistically Abstr#069 @RheumNow #EULAR2026 https://t.co/NBQ6CccuCn
Antoni Chan MD (Prof) synovialjoints ( View Tweet)
💉 Add tirzepatide to biologics in obese #PsA?
#POS0050: Yes! Propensity score-matched study (n=93):
better PROs, HAQ & PASI at 6 months
#EULAR2026 @RheumNow
@vincevenerito https://t.co/rrhNKZByjc
Nelly ZIADE 🍀 Nellziade ( View Tweet)
Integrating D2T into T2T Practices in RA
Researchers at Semmelweis University analyzed how depression, smoking, obesity, sleep disorders, and other health problems are linked to difficult-to-treat rheumatoid arthritis (D2T-RA) and how this can inform treat-to-target (T2T) and https://t.co/buCXeK2jNS
Dr. John Cush RheumNow ( View Tweet)
Fatigue in SLE
An NIH lupus cohort study looked at fatigue in SLE and found associations with organ damage, obesity, but does not correlate with disease activity in systemic lupus erythematosus (SLE) patients.
https://t.co/63JVDUwu88 https://t.co/3dPOThMbMD
Links:
Dr. John Cush RheumNow ( View Tweet)
Fatigue in SLE
An NIH lupus cohort study looked at fatigue in SLE and found associations with organ damage, obesity, but does not correlate with disease activity in systemic lupus erythematosus (SLE) patients.
https://t.co/JEAnhMFJD8 https://t.co/sROKzsyISl
Links:
Dr. John Cush RheumNow ( View Tweet)
Vitamin D in Rheumatic Disease - Is It Good Enough?
Vitamin D in rheumatic disease — is it sufficient? Vitamin D deficiency/insufficiency is common and linked to inflammatory rheumatic diseases, raising the question of whether low vitamin D drives immune dysregulation, disease https://t.co/CLBFii2TbR
Dr. John Cush RheumNow ( View Tweet)
U.S. spending on prescription drugs in 2025 jumped 13% to $915 billion=projected to surpass $1 trillion in 2026, according to ASHP/USA today. One major reason– the popularity of the weight-loss and diabetes drugs tirzepatide and semaglutide. https://t.co/EQ9yFCCdBp https://t.co/cig1jNp6NF
Dr. John Cush RheumNow ( View Tweet)
Review of GLP-1 Receptor Agonists in Psoriasis
Psoriasis is a chronic immune-mediated inflammatory disease plaqued by systemic comorbidities that increase morbidity, mortality, and treatment complexity. Obesity is a significant contributor to psoriatic disease. https://t.co/R1Uutdjcvz
Dr. John Cush RheumNow ( View Tweet)
Weight-loss drugs may affect joints directly
A new study from Aarhus University shows that the hormone GLP-1, which is mimicked in medication for diabetes and weight loss, is present in joint fluid. In the long term, this may open up new treatments for arthritis. https://t.co/HkcPUQp05H
Dr. John Cush RheumNow ( View Tweet)
