12 Best and Worst Foods for Psoriasis

There's no strong scientific evidence that specific foods can impact psoriasis, but there is evidence that losing extra weight can ease symptoms. Nutritionists and physicians recommend a healthy, balanced diet to control your weight and your psoriasis, as well as lower your risk of heart disease, diabetes, and stroke (which are elevated in people with psoriasis). The foundation of a healthy diet is lean protein, low-fat dairy, whole grains, and fruits and vegetables, says Heather Mangieri, RD, a spokesperson for the Academy of Nutrition and Dietetics.

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Omega-3 fatty acidsabundant in fatty fish such as salmon, mackerel, sardines, and albacore tunaare the foundation of a heart-healthy diet. Fish oils are thought to reduce inflammation and help the immune system, which is overactive in people with psoriasis. Given that psoriasis is also linked to a higher risk of heart attack and stroke, it's a good idea to eat fish at least twice a week.

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"A diet that's high in fruits and vegetables can have an anti-inflammatory effect," says Mangieri, who is a Pittsburgh-based registered dietician. And although there are no studies connecting fruits and vegetables specifically with a reduction in psoriasis symptoms, psoriasis is an inflammatory condition. Specific vegetables that might have inflammation-fighting properties include carrots, squash, sweet potatoes, spinach, kale, and broccoli.

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Along with potatoes and peppers, tomatoes are a nightshade vegetable. Some people with psoriasis find these veggies aggravate their skin condition. There's little scientific evidence to support this, but if you notice a link between these types of vegetables and worsening of psoriasis symptoms, cut them out of your diet to see if your skin improves.

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Grains such as whole-grain bread, cereal, and pasta; oatmeal; and brown rice are another component of an overall healthy diet. Like fruits and vegetables, grains also contain a variety of anti-inflammation antioxidants and are high in fiber, which has been linked with lower inflammation levels and better regulation of blood sugar. Legumes such as beans and lentils also have antioxidants and fiber, so include them in your diet as well.

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12 Best and Worst Foods for Psoriasis