By Marc Dellière, Medical Consultant & Trainer – Specialist in Stress, Prevention & Integrative Health
Osteoarthritis is a chronic, multifactorial joint disease involving cartilage degeneration, bone remodeling, low-grade inflammation, and mechanical overload. Beyond symptomatic treatment, targeted nutritional approaches can help delay progression, reduce pain, and optimize quality of life for patients at risk or with symptoms.
The latest systematic reviews and meta-analyses now make it possible to prioritize nutritional recommendations based on the level of evidence.
Nutritional goals for preventing or slowing osteoarthritis:
- Reduce low-grade systemic inflammation
- Promote gradual weight loss (if overweight or obese)
- Improve the quality of the gut microbiota
- Maintain adequate nutritional density (vitamins, antioxidants, fiber)
Key findings from recent data (2020–2025)
Calorie restriction remains the most robust intervention: it significantly improves pain and joint function, while indirectly reducing the progression of osteoarthritis through weight loss. (Level of evidence: high – ⭐⭐⭐⭐)
The so-called “prudent” diet (similar to the DASH or plant-based Mediterranean diet) shows moderate but consistent effects on pain and function, and a probable effect on slowing the progression of symptoms. (Level of evidence: moderate – ⭐⭐⭐)
A high fiber intake, through fruits, vegetables, whole grains, or legumes, is associated with a moderate reduction in pain and a protective effect against symptom worsening. (Level of evidence: intermediate – ⭐⭐)
Omega-3, antioxidant-rich fruits, and curcumin have partial benefits on pain, but the effects on function or progression remain limited or mechanistic. (Level of evidence: modest – ⭐⭐)
Conversely, the Western diet (rich in added sugars, saturated fats, and ultra-processed foods) is associated with worsening pain, function, and progression of osteoarthritis. (Level of evidence: moderate – ⭐⭐⭐)
Targeted nutritional recommendations
1. Top priority: appropriate calorie restriction
Indication: BMI > 25 or symptomatic osteoarthritis with excess weight
Proven effects: significant improvement in pain, function, and weight loss.
2. Adopt a prudent/Mediterranean-style plant-based diet
Rich in fruits, vegetables, fatty fish, whole grains, legumes
Reduction in saturated fats, simple sugars, processed foods
Modest but consistent effect on symptom progression, especially in the long term
3. Increase dietary fiber intake
Favorable effect on pain and symptom progression
Promotes satiety, weight loss, and healthy microbiota
4. Include certain micronutrients and natural anti-inflammatories
Omega-3: fatty fish or supplements (DHA/EPA ≥1g/day)
Curcumin, polyphenols (berries, green tea): possible antioxidant and anti-inflammatory effects –
Xelflex®: anti-inflammatory effects
Vitamins D, C, K2: support bone and cartilage health
What to avoid or discourage
Diet rich in ultra-processed foods, added sugars, excess omega-6, red meat → worsens inflammatory profile and progression of osteoarthritis
For the prevention or management of symptomatic osteoarthritis, personalized calorie restriction, combined with a prudent/Mediterranean plant-based diet rich in fiber and anti-inflammatory micronutrients, is the most consistent strategy based on current data. This nutritional approach should be integrated into a multidisciplinary support program, including therapeutic education, adapted physical activity, and regular weight monitoring.
Learn more about Xelflex for joint health!
Scientific sources :
✍️ Asadi S, Grafenauer S, Burley CV, Fitzgerald C, Humburg P, Parmenter BJ. The effectiveness of dietary intervention in osteoarthritis management: a systematic review and meta-analysis of randomized clinical trials. Eur J Clin Nutr. 2025 Apr 28. doi: 10.1038/s41430-025-01622-0. Epub ahead of print. PMID: 40295866.
✍️ Kurapatti M, Carreira D. Diet Composition's Effect on Chronic Musculoskeletal Pain: A Narrative Review. Pain Physician. 2023 Nov;26(7):527-534. PMID: 37976478.
✍️ Zeng J, Franklin DK, Das A, Hirani V. The effects of dietary patterns and food groups on symptomatic osteoarthritis: A systematic review. Nutr Diet. 2023 Feb;80(1):21-43. doi: 10.1111/1747-0080.12781. Epub 2022 Oct 24. PMID: 36278278; PMCID: PMC10092134.
✍️ Xu C, Liu T, Driban JB, McAlindon T, Eaton CB, Lu B. Dietary patterns and risk of developing knee osteoarthritis: data from the osteoarthritis initiative. Osteoarthritis Cartilage. 2021 Jun;29(6):834-840. doi: 10.1016/j.joca.2021.02.571. Epub 2021 Mar 17. PMID: 33744430; PMCID: PMC8318673.
✍️ Genel F, Kale M, Pavlovic N, Flood VM, Naylor JM, Adie S. Health effects of a low-inflammatory diet in adults with arthritis: a systematic review and meta-analysis. J Nutr Sci. 2020 Aug 27;9:e37. doi: 10.1017/jns.2020.31. PMID: 32983422; PMCID: PMC7503186.
Xu C, Marchand NE, Driban JB, McAlindon T, Eaton CB, Lu B. Dietary Patterns and Progression of Knee Osteoarthritis: Data from the Osteoarthritis Initiative. Am J Clin Nutr. 2020 Mar 1;111(3):667-676. doi: 10.1093/ajcn/nqz333. PMID: 31912140; PMCID: PMC7049524.
Morales-Ivorra I, Romera-Baures M, Roman-Viñas B, Serra-Majem L. Osteoarthritis and the Mediterranean Diet: A Systematic Review. Nutrients. 2018 Aug 7;10(8):1030. doi: 10.3390/nu10081030. PMID: 30087302; PMCID: PMC6115848.