If you live with chronic pain — whether from arthritis, migraines, or a condition without a clear cause — you’ve probably been told at some point to “try an anti-inflammatory diet.” It’s genuinely backed by research, but the details matter a lot more than the trend suggests.

The omega-6 to omega-3 balance

Modern diets have shifted dramatically over the past 60 years. Omega-6 fat intake — largely from vegetable oils used in processed and packaged foods — has risen from around 2.7g a day in the 1960s to as much as 21g a day now. At the same time, omega-3 intake has stayed relatively flat. The result is a ratio of omega-6 to omega-3 that’s climbed from roughly 4:1 to over 20:1 in the average Western diet.

This matters because omega-6 fats are precursors to pro-inflammatory compounds in the body, while omega-3 fats support the resolution of inflammation. Research has linked a high omega-6-to-omega-3 ratio with worse pain outcomes and greater functional limitation.

What the research actually shows about omega-3s

A recent systematic review pooling 41 clinical trials and nearly 3,800 participants found omega-3 supplementation produced a moderate, statistically meaningful reduction in pain intensity. A few useful details from that research:

• Benefits were clearest for rheumatoid arthritis, migraine, and other mixed chronic pain conditions
• Benefits were less clear for osteoarthritis
• Lower doses (around 1.35g/day or less) performed at least as well as higher doses
• Relief improved over time — noticeable at one month, stronger by six months

This isn’t a quick fix, and it isn’t universal — but for certain conditions, the evidence is genuinely solid.

Food sources worth prioritising

• Oily fish (salmon, sardines, mackerel) — aim for 2–3 serves per week
• Flaxseed, chia seeds, walnuts
• Extra virgin olive oil and canola oil for cooking and dressings

What to be more mindful of

• Ultra-processed foods, which are typically high in omega-6 vegetable oils
• Excess saturated and trans fats (butter, fried and packaged foods)
• Fish oil supplements at high doses — these can interact with medications, and the right dose depends on your specific condition, so it’s worth getting professional guidance rather than self-prescribing

What about turmeric and curcumin?

Turmeric’s active compound — curcumin — is one of the most heavily studied natural anti-inflammatories, and the evidence here is genuinely stronger than for most supplements on the market.

Multiple systematic reviews and meta-analyses of randomised controlled trials have found curcumin significantly reduces pain and improves function in osteoarthritis (Zeng et al., 2022), with effects in some trials comparable to low-dose NSAIDs but with fewer gastrointestinal side effects — based on a meta-analysis of 16 randomised trials and 1,810 adults. Similar benefit has been shown for rheumatoid arthritis.

A few things worth knowing before trying it:

• The dose that matters isn’t the dose in your curry. Clinical trials use concentrated curcumin extracts, not culinary turmeric.
• Bioavailability is the catch. Curcumin on its own is poorly absorbed by the gut. Most effective supplements pair it with black pepper extract (piperine), or use specialised formulations, to meaningfully raise blood levels.
• Evidence is strongest for osteoarthritis and rheumatoid arthritis specifically. For chronic pain more broadly, evidence is thinner and more preliminary.
• Curcumin is generally well tolerated, but high-bioavailability formulations have rarely been linked to liver enzyme changes, and curcumin can interact with some medications (particularly blood thinners) — another reason to get individual guidance rather than self-prescribing.

What about vitamin D and magnesium?

Worth knowing, but the honest picture here is more mixed than the omega-3 or curcumin evidence:

• Vitamin D — Evidence is inconsistent. Some reviews report a modest reduction in pain with supplementation, particularly in people who are deficient, while others found no meaningful effect on chronic musculoskeletal pain specifically (Karimi et al., 2024). The most defensible takeaway is that correcting a genuine deficiency may help, but vitamin D isn’t a reliable pain treatment on its own.
• Magnesium — Evidence across chronic pain conditions generally is equivocal. The exception is migraine, where magnesium has a “probably effective” recommendation from neurology and headache societies (typical studied dose: 600mg/day).

An anti-inflammatory eating pattern, not a diet

Rather than a strict protocol, most of the supporting evidence points to a broadly Mediterranean-style pattern: plenty of vegetables, legumes, wholegrains, nuts, olive oil and fish, with less red meat, refined carbohydrates and processed food. Small pilot studies using this kind of pattern in people with rheumatic disease have shown improvements in reported pain and quality of life.

Setting realistic expectations

It’s important to be upfront: nutrition is a genuinely useful piece of chronic pain management, but it’s a complementary tool, not a replacement for medical treatment. Some elements — like omega-3s and curcumin — have solid evidence behind them for specific conditions. Others — like vitamin D and magnesium for pain generally — are more “worth discussing with your practitioner” than proven fixes. It works best as one part of a broader plan — alongside your GP, medications, and the other allied health support you may already have in place.

The takeaway

The link between diet and chronic pain isn’t wellness-industry spin — it’s an active, evolving area of clinical research with real supporting evidence, particularly around the omega-6 to omega-3 balance and curcumin for arthritic conditions. The details (which condition, which dose, which foods, which supplements are actually worth your money) are where personalised advice makes the difference between “trying an anti-inflammatory diet” and actually seeing a change.

If you’re living with chronic pain, our dietetics team can work alongside your other AHP practitioners to build a nutrition approach tailored to your specific condition. Get in touch on 0432 441 104 or admin@acehp.com.au, or visit us at 98 Scarborough Beach Road, Mount Hawthorn.

References

1. Editorial: Diet, nutrition, and functional foods for chronic pain, Frontiers in Nutrition (2024)
2. Effects of omega-3 fatty acids on chronic pain: a systematic review and meta-analysis, Frontiers in Medicine / PMC (2025)
3. The effect of an anti-inflammatory diet on chronic pain: a pilot study, Frontiers in Nutrition / PMC (2023)
4. International Association for the Study of Pain (IASP). Nutrition and Chronic Pain — Fact Sheet
5. Rhitrition. Anti-Inflammatory Foods and Chronic Pain: Nourishing Your Way to Relief (2024)
6. (Zeng et al., 2022) — Efficacy and safety of curcumin and Curcuma longa extract in arthritis: a systematic review and meta-analysis of RCTs — https://doi.org/10.3389/fimmu.2022.891822
7. Efficacy of Curcuma longa in relieving pain symptoms of knee osteoarthritis patients: a systematic review and meta-analysis of clinical trials — https://www.jrd.or.kr/journal/view.html?uid=1595&vmd=Full
8. (Karimi et al., 2024) — Relationship Between Serum Vitamin D Levels and Chronic Musculoskeletal Pain in Adults: A Systematic Review — https://doi.org/10.3390/nu16234061
9. Diet and Dietary Supplements in Chronic Pain, ASRA (2021) — https://asra.com/news-publications/asra-newsletter/newsletter-item/asra-news/2021/11/01/diet-and-dietary-supplements-in-chronic-pain