A spread of fresh foods on a surface: fish, grains, vegetables, tomatoes, nuts

Diets That May Be Able to Help Manage Psoriatic Arthritis

Last updated: April 2023

When you have psoriatic arthritis, you're likely all too familiar with how it can affect your joints. The word inflammation seems to become an everyday word, and discomfort is the norm. 

While it hasn't been scientifically proven that certain foods can affect your joints, many patients have claimed that an improved diet has helped to decrease inflammation.

Inflammation, diet and how it's linked directly to psoriatic arthritis

When it comes to what you're chowing down on, it makes sense that what you put in your body affects its inner workings. For example, foods high in omega-3 fatty acids are proven to help lower inflammation, while processed foods or foods containing sugar can increase inflammation.

Altering your diet can also be beneficial to your weight. Maintaining a healthy weight is essential for your PsA, as additional weight stresses your joints.

Weight management is a struggle for those with PsA

Rheumatologist Binita Sapkota, MD, from the Cleveland Clinic, states, "Obesity can increase trauma in the joints and in areas where tendons insert into the joint. Weight management is an essential component in the management of psoriatic arthritis." 1

All of this can feel overwhelming, but it's not about making significant drastic changes - but starting with small little ones. As I said, inflammation is a big part of psoriatic arthritis management. Let's jump off from there.

Let's build your anti-inflammatory shopping list

Ideally, you want to focus on eating anti-inflammatory foods to help tame flare-ups. According to Harvard Medical School, here are some anti-inflammatory foods to include in your diet.2

Were talking tomatoes and olive oil; green leafy vegetables, such as spinach, kale, and collard greens; nuts like almonds and walnuts; fatty fish like salmon, mackerel, tuna, and sardines and fruits, such as strawberries, blueberries, cherries, and oranges.

Claire Daien, MD, Ph.D., is a rheumatologist at the Regional University Hospital of Montpellier, France, and a professor at the university there. Daien explains, "Seventy percent of immune cells are located in the gut. This is why the quality of the food one eats so important."

Following a study by Dr. Daien on 300 adult patients with immune-mediated inflammatory disease, 44% changed their eating habits following their diagnosis. Of those patients, two-thirds (66%) who had modified their diet experienced a positive change.3

Well, what food cause inflammation linked to PsA?

Sugar! Sugar releases small proteins called cytokines that cause inflammation. Foods that cause inflammation include refined carbohydrates, such as white bread and pastries, french fries and other fried foods, soda, and other sugar-sweetened beverages.

Additionally, red meat (burgers, steaks), processed meat (hot dogs, sausage), and processed foods. Items like cereal and frozen dinners tend to contain trans fat, which can trigger inflammation. Don't forget certain dairy products, either!2

Consider swapping your dairy products for plant-based items like soy, almond, or coconut milk. Dr. Sapkota says, "These foods are known to increase inflammation, and they can also cause an increase in your weight, which is not good for psoriatic arthritis." 1

A look at different diets that may improve symptoms of PsA

Exercise, weight management, lowering stress levels, and a good night's sleep are also essential to maintaining a healthy lifestyle and, in turn, healthier joints.

Always pay attention to your body. Remember that everybody is different, and people react differently to various changes in diet. There is never one right fit for everyone. You want to live the healthiest version of yourself, which doesn't end with dieting alone.

Mediterranean diet

This diet focuses on eating fewer carbohydrates and red meat, which are big staples of the American diet. There are also fewer sugary foods. Mediterranean regions have been following this method of eating for years. No wonder they're healthier than us!

The Mediterranean diet focuses on eating: fruits, vegetables, healthy fats (like olive oil), seafood, legumes, nuts, and seeds. The Mediterranean diet is rich in omega-3 fatty acids in fish like salmon, and nuts and sources like flaxseeds and chia seeds. Omega-3 fatty acids help reduce inflammation and joint stiffness.

Paleolithic diet

This diet is also known as the Paleo diet, and it consists of eating what humans back in the caveman error might have consumed some 2.5 million years ago. Anything you can hunt or gather rather than farm is part of the Paleo diet.

The Paleolithic diet focuses on eating: lean meats, fish, vegetables, fruits, nuts, and seeds. Foods to avoid include grains, legumes, dairy products, potatoes, refined sugar, and processed foods.

Vegetarian or Vegan diet

Eating vegetarian or vegan means cutting meat and fish and focusing on plants, vegetables, fruits, nuts, seeds, and grains. If you choose to include fish, this is also great for your PsA, but you would be considered to be on a pescatarian diet.

A vegan diet is a bit more strict. Like the vegetarian diet, this also excludes meat, poultry, fish, and anything an animal, such as eggs, dairy, and honey, could produce.

Gluten-free diet

A gluten-free diet is pretty self-explanatory, but this diet cuts out foods that contain the protein gluten. This includes grains such as wheat, barley, and rye.

This or That

Have you tried integrating the anti-inflammatory diet into your routine?

By providing your email address, you are agreeing to our privacy policy.

This article represents the opinions, thoughts, and experiences of the author; none of this content has been paid for by any advertiser. The Psoriatic-Arthritis.com team does not recommend or endorse any products or treatments discussed herein. Learn more about how we maintain editorial integrity here.

Join the conversation

Please read our rules before commenting.

Community Poll

Do you usually need to recover from a vacation?