Arthritis and Nutrition: Can What You Eat Make a Difference?
Arthritis affects millions of people and is one of the leading causes of pain and reduced mobility. While medication, physiotherapy and exercise are often central to treatment, nutrition can also play an important supportive role.
One of the biggest misconceptions is that all arthritis is the same. In reality, there are over 100 different forms of arthritis, each with different causes and therefore different nutritional considerations. As a nutritional therapist, I always look at the individual as a whole rather than taking a one-size-fits-all approach. Nutrition cannot cure arthritis, but it can help support overall health, reduce risk factors for disease progression, and improve quality of life alongside appropriate medical care.
Understanding the Different Types of Arthritis
Osteoarthritis
Osteoarthritis is the most common form of arthritis. It develops when the cartilage that cushions the joints gradually wears down over time. Although often associated with ageing, previous injuries, repetitive strain, genetics and excess body weight can all increase the risk.
While osteoarthritis is primarily considered a degenerative joint condition, research has shown that low-grade inflammation also contributes to cartilage breakdown and symptoms.
Rheumatoid Arthritis
Rheumatoid arthritis (RA) is an autoimmune condition where the immune system mistakenly attacks the lining of the joints. This causes inflammation, pain, stiffness and swelling and, over time, can lead to permanent joint damage if not effectively managed.
Medication remains the cornerstone of treatment, but nutrition may help support immune function, reduce systemic inflammation and improve overall wellbeing.
Psoriatic Arthritis
Psoriatic arthritis is another autoimmune inflammatory arthritis associated with psoriasis. It affects both the skin and joints and often fluctuates between periods of flare-ups and remission.
Lifestyle measures that support a healthy immune response, reduce inflammation and maintain a healthy body weight may all contribute to improved symptom management.
Gout
Gout differs from other forms of arthritis because it is caused by elevated uric acid levels, leading to crystal formation within joints. Flare-ups can be extremely painful and may be triggered by dehydration, alcohol, certain foods or underlying metabolic conditions.
Nutrition is an important part of gout management alongside any prescribed medication.
An Anti-inflammatory Eating Pattern
Rather than focusing on individual “superfoods”, research consistently suggests that overall dietary patterns have the greatest impact on long-term health.
A Mediterranean-style diet has the strongest evidence for reducing inflammation and supporting cardiovascular health. It encourages:
- Plenty of colourful vegetables and fruit
- Whole grains
- Beans, lentils and pulses
- Nuts and seeds
- Extra virgin olive oil
- Oily fish rich in omega-3 fats
- Herbs and spices
- Moderate amounts of dairy and lean protein
- Limiting ultra-processed foods and foods high in added sugars
This style of eating provides antioxidants, fibre, vitamins, minerals and healthy fats that support overall health.
What About the Paleo Diet?
You may have heard that a Paleo (Palaeolithic) diet can help arthritis. While the research is still evolving, there are some encouraging findings, particularly in inflammatory arthritis.
Many of the proposed benefits appear to come from eating more whole, minimally processed foods rather than simply eliminating grains or dairy. A well-planned Paleo diet typically includes:
- Plenty of vegetables and fruit
- Fish and lean meats
- Nuts and seeds
- Healthy fats
- Avoiding refined sugars and ultra-processed foods
These principles overlap considerably with a Mediterranean-style dietary pattern.
Some small studies investigating Paleo-style or elimination diets, including the Autoimmune Protocol (AIP), have reported improvements in pain, fatigue and quality of life in some people with rheumatoid arthritis. However, these studies have generally been small, and larger, long-term clinical trials are needed before firm recommendations can be made.
For most people, the emphasis should be on eating a varied, nutrient-dense diet that is sustainable, enjoyable and tailored to individual needs rather than following any one dietary philosophy.
Omega-3 Fats
Omega-3 fatty acids (EPA and DHA), found in oily fish, have one of the strongest evidence bases for supporting people with inflammatory arthritis.
Studies suggest they may help reduce:
- Morning stiffness
- Joint tenderness
- Disease activity in some individuals
- The need for anti-inflammatory medication (under medical supervision)
Aim for two portions of oily fish each week or discuss supplementation with a qualified healthcare practitioner.
Weight Management
Maintaining a healthy body weight is particularly important in osteoarthritis.
Every additional kilogram of body weight places significantly greater force through the knees and hips during movement. Research has shown that even modest weight loss can improve pain, mobility and physical function.
Healthy body composition may also help reduce inflammation throughout the body.
The Gut–Joint Connection
One of the most exciting areas of arthritis research is the relationship between gut health and inflammation.
Around 70% of the immune system is associated with the gut, and the trillions of microorganisms living within the digestive tract, collectively known as the gut microbiome, play an important role in regulating immune function.
Research suggests that alterations in the gut microbiome (sometimes referred to as dysbiosis) may influence inflammation and contribute to the development or progression of autoimmune conditions such as rheumatoid arthritis and psoriatic arthritis. Although scientists are still uncovering exactly how this relationship works, it highlights the importance of supporting overall gut health.
Ways to support a healthy gut microbiome include:
- Eating a wide variety of plant foods (aiming for around 30 different plant foods each week where possible)
- Increasing fibre intake from vegetables, fruit, whole grains, legumes, nuts and seeds
- Including fermented foods such as live yoghurt, kefir or sauerkraut if tolerated
- Eating polyphenol-rich foods such as berries, herbs, spices, olive oil and green tea
- Limiting ultra-processed foods where possible
While improving gut health is not a treatment for arthritis, supporting the gut microbiome may contribute to better immune regulation and overall health.
Vitamin D and Bone Health
People living with arthritis may have an increased risk of reduced bone density, particularly if mobility is limited or long-term steroid medication is required.
Vitamin D supports normal immune function, muscle health and bone maintenance, while calcium, magnesium, vitamin K and adequate protein all contribute to maintaining healthy bones.
Testing may be appropriate where deficiency is suspected before supplementation is considered.
What About Supplements?
Many supplements are marketed for joint health, but the quality of evidence varies.
Those with the strongest research include:
- Omega-3 fish oil
- Curcumin
- Boswellia serrata
- Collagen peptides
- Glucosamine sulphate (mixed evidence)
- Chondroitin sulphate (mixed evidence)
The most appropriate supplements depend on the type of arthritis, medications, nutritional status and individual health goals. Supplements should complement, not replace, a balanced diet and appropriate medical care.
Nutrition for Gout
Unlike other forms of arthritis, gout has more specific dietary recommendations.
Helpful strategies include:
- Staying well hydrated
- Limiting excessive alcohol, particularly beer
- Reducing intake of organ meats and other foods very high in purines
- Moderating sugary drinks containing fructose
- Achieving gradual, sustainable weight loss where appropriate
Most people do not need to eliminate all purine-containing foods but instead benefit from an overall balanced dietary approach.
Is There One Food That Causes Arthritis?
There is no convincing evidence that one specific food causes arthritis in everyone.
However, some people notice individual foods appear to worsen their symptoms. Keeping a food and symptom diary may help identify personal triggers, although highly restrictive diets should only be undertaken with professional guidance to ensure nutritional adequacy.
A Whole-Person Approach
Nutritional Therapy focuses on supporting the whole person rather than simply targeting one symptom or one diagnosis.
This may include:
- Optimising nutritional status
- Supporting healthy blood sugar balance
- Reducing chronic inflammation
- Supporting gut health
- Maintaining a healthy body weight
- Encouraging regular movement
- Managing stress
- Improving sleep quality
Every person experiences arthritis differently. A personalised approach considers your symptoms, medical history, lifestyle, medications and health goals to develop practical strategies that support your overall wellbeing.
Further Reading and Evidence
- Calder PC. Omega-3 fatty acids and inflammatory processes. Nutrients. 2010.
- Sköldstam L et al. Mediterranean diet and rheumatoid arthritis. Annals of the Rheumatic Diseases. 2003.
- Philippou E, Nikiphorou E. Are we really what we eat? Nutrition and rheumatoid arthritis. Mediterranean Journal of Rheumatology. 2018.
- Tedeschi SK et al. Dietary patterns and rheumatoid arthritis: current evidence. Current Rheumatology Reports. 2021.
- European Alliance of Associations for Rheumatology (EULAR). Lifestyle recommendations for rheumatic diseases.
- National Institute for Health and Care Excellence (NICE). Osteoarthritis and Rheumatoid Arthritis Guidelines.
- British Dietetic Association. Arthritis and healthy eating resources.
- Versus Arthritis. Diet and arthritis information.
- Arthritis Foundation. Nutrition and arthritis resources.
Topics covered in this article
Nutrition and arthritis • Arthritis diet • Osteoarthritis nutrition • Rheumatoid arthritis diet • Psoriatic arthritis nutrition • Gout diet • Anti-inflammatory foods • Mediterranean diet • Paleo diet and arthritis • Gut microbiome and arthritis • Gut health and inflammation • Omega-3 for arthritis • Weight management and osteoarthritis • Nutritional therapy for arthritis • Joint health • Autoimmune arthritis • Healthy eating for arthritis.
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What is Nutritional Therapy?
Nutritional Therapy is a holistic approach to health and wellbeing that focuses on using food and nutrition to support the body's natural healing processes.
I provide personalised nutrition plans tailored to individual needs.
Whether you're looking to improve digestion, boost energy levels, manage weight, improve your nutrition intake, or address specific health concerns. Nutritional Therapy can offer valuable insights and support on your journey to optimal health.
My Nutritional Therapy diploma is held with the School of Health, and I am a registered Nutritional Therapist with the Federation of Nutritional Therapy Practitioners.
What is the difference between a; dietitian, nutritionist and nutritional therapist.
Dietitian's - Dietitian's provide practical guidance to sick individuals to help them make appropriate, healthy choices for a specific medical conditions. They often work as part of a clinical team, including for example doctors, nurses, physiotherapists etc. They take a direct approach to the illness being presented to them, not the body as a whole.
Nutritionists - Registered nutritionists are qualified to provide information and nutrition advice about food and eating habits. They may take a similar approach to a Nutritional Therapist. Nutritionists normally operate out of private practices. Dieticians will normally operate out of the NHS.
In general, nutritionists provide evidence-based information and guidance about the impacts of food and nutrition on the health and wellbeing of humans
Nutritional Therapists - Nutritional therapists practice complementary medicine, taking a holistic approach to the symptoms that are presenting in the body, They provide recommendations for diet and lifestyle to reduce or prevent health issues and illnesses. They work on the belief that the body has underlying nutritional and biochemical imbalances that lead to poor health, including mental health problems.
