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The month of May is very personal for us at MyPsoriasisTeam, because we honor Arthritis Awareness Month and our 8,000 members who live with psoriatic arthritis (PsA), a form of chronic inflammatory arthritis. About 30 percent of people who have psoriasis eventually develop PsA, according to the National Psoriasis Foundation. Help raise awareness by posting about your experience with PsA on social media. You can also make a donation to further research, or participate in an event.
If you’re among the 30 percent of people with psoriasis who also deal with psoriatic arthritis (PsA), changing your diet may help control joint pain, swelling, and other life-altering symptoms of this chronic inflammatory condition, according to the National Psoriasis Foundation (NPF). Adopting healthy eating habits can also prevent or reduce the risk of developing heart disease, diabetes, and other chronic illnesses that are more common in people with psoriatic arthritis.
While no single diet has been proven to treat or cure psoriatic arthritis, there are steps you can take to manage your psoriatic arthritis. In the absence of dietary guidelines for PsA, physicians recommend following a balanced, healthy diet rich in whole, fresh foods — similar to those advised by the American Heart Association and American Cancer Society.
Eliminating inflammatory trigger foods may also help control psoriatic arthritis, according to a 2017 national survey of NPF members’ dietary habits. When survey respondents made dietary changes — including cutting out alcohol, gluten, nightshade vegetables and other foods believed to cause psoriatic flares — more than half experienced a reduction in PsA symptoms.
Which diets helped them achieve these results? The Pagano diet (based on the theory that psoriasis is caused by toxic buildup, also known as leaky gut, in the intestine), a vegan diet, and the Paleo (caveman) diet were most frequently cited. Gluten-free, low-carbohydrate, Mediterranean, and vegetarian diets were also identified as beneficial.
The best, most successful diets for psoriatic arthritis incorporate anti-inflammatory and weight-loss approaches, according to researchers in the National Psoriasis Foundation study. Most of the diets mentioned by respondents offer those features.
Researchers caution, however, that treating psoriatic arthritis with diet alone is neither a safe, nor effective way to manage symptoms. Medical treatments that include dietary interventions have the greatest opportunity to reduce disease severity and the risk of developing comorbid (multiple) conditions, according to a 2018 systematic review in JAMA Dermatology.
Study authors recommended the following interventions for people with psoriatic disease:
An anti-inflammatory diet is one of the most popular nutritional choices among members of MyPsoriasisTeam. Diets in this category include the Mediterranean Diet and DASH Diet.
These diets are high in fresh fruits, vegetables, nuts, whole grains, and extra-virgin olive oil, and eliminate foods that may trigger a flare or worsen disease activity. Foods to limit or avoid on the Mediterranean or Dash diet plans include saturated fats, refined sugars, and refined carbs, such as white bread.
Staples of anti-inflammatory diets include:
Fresh fruits and vegetables. Blueberries, cherries, collards, spinach, kale, Swiss chard, and beet greens all contain antioxidants that can help decrease inflammation.
Olive oil. The cornerstone of the Mediterranean diet, olive oil is loaded with heart-healthy fats and oleocanthal, which has similar pain relief properties as nonsteroidal anti-inflammatory drugs (NSAIDs).
Fish and omega 3s. Fatty fish, such as salmon and mackerel, are high in omega-3s — a type of polyunsaturated fatty acid (PUFA) — whose anti-inflammatory properties may help protect people with PsA against heart disease.
Whole grains. Whole grains — such as brown rice, whole grain bread, quinoa, barley, and wheat berries — contain fiber, which may also decrease inflammation.
Nuts. Peanuts, almonds, walnuts, cashews, pistachios, and pecans have been linked with lower levels of inflammation in the body.
Beans. High in dietary fiber and protein, beans have significant antioxidant and anti-inflammatory compounds.
A diet of anti-inflammatory foods, however, may not work for everyone with PsA, or prevent someone from developing psoriatic arthritis or psoriasis. A 2019 cohort study of 85,000 nurses showed that the risk of developing psoriatic disease was equal, whether they ate an anti-inflammatory diet or not.
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