Treating Psoriatic Arthritis

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The Impact of Weight on Psoriatic Arthritis

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Psoriatic arthritis is a type of inflammatory arthritis that affects up to 20% of people who have psoriasis, a chronic autoimmune condition that makes skin cells grow faster than they should and build up in patches. When you have psoriatic arthritis, maintaining a healthy weight can benefit you in more ways than you might expect. It can reduce pain, help treatment work better, and control the disease faster.

Psoriatic Arthritis and Excess Weight

With psoriatic arthritis, certain proteins in your body trigger the inflammation that causes swelling, pain, and stiffness in your joints. Proteins in everyone’s fat cells trigger inflammation, too. Inflammation rises as weight increases, and the result can be an inflammation overload that can be tough for anti-inflammatory treatments to fight.

5 Tips For People With Psoriatic Arthritis From People With Psoriatic Arthritis

Carrying extra weight also makes aching joints work harder than they have to. Maintaining a healthy weight can reduce pain, boost energy, and support greater mobility. In fact, even losing one pound of weight can take four pounds of pressure off your knees.

Weight Loss and Minimal Disease Activity

The main goal of psoriatic arthritis treatment is minimal disease activity, which is determined by:

  • How many joints are tender

  • How many joints are swollen

  • Degree of tenderness where tendons and ligaments attach muscle to bone

  • How much skin is affected by psoriasis

  • Your quality of life

Maintaining a healthy weight can help you get to the goal of minimal disease activity more quickly. According to one study, those with psoriatic arthritis who maintained a healthy weight were 65% more likely to achieve minimal disease activity within one year compared to those who were overweight.

Diet and Exercise When You Have Psoriatic Arthritis

Before you begin a new diet or exercise program, talk with your doctor. Ask what a healthy target weight would be for you. The Body Mass Index, or BMI, is often used as a starting point. It calculates your height relative to your current weight to arrive at one of four broad categories:

  • Underweight

  • Normal weight

  • Overweight

  • Obesity

Your doctor may recommend you work with a registered dietician to set parameters for daily calorie intake and to guide you on spending calories wisely for the nutrition you need.
Becoming more physically active can not only help you lose weight, but also help improve flexibility, build muscle strength to support joints, and increase your range of motion. Remember to get your doctor’s advice before jumping in. You may need to begin with stretching and build up to weight training and aerobic exercise. If any exercise causes pain, stop immediately and let your doctor know.

Making changes to your diet and exercise routine may not seem easy at first, but there’s a big payoff for those with psoriatic arthritis. Know the effort will get easier with time, and improvements in your symptoms will motivate you to keep going.

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Medical Reviewer: William C. Lloyd III, MD, FACS
Last Review Date: 2018 Sep 27
  1. What is psoriatic arthritis? Arthritis Foundation. https://www.arthritis.org/about-arthritis/types/psoriatic-arthritis/what-is-psoriatic-arthritis.php
  2. Psoriatic arthritis overview. Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/psoriatic-arthritis/symptoms-causes/syc-20354076
  3. Psoriatic arthritis diagnosis. Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/psoriatic-arthritis/diagnosis-treatment/drc-20354081
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  5. How Overweight and Obesity Affect Psoriatic Arthritis.
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  7. How Can Psoriasis and Psoriatic Arthritis Affect Your
    Health? Arthritis Foundation. https://www.arthritis.org/about-arthritis/types/psoriatic-arthritis/articles/psoriasis-psoriatic-arthritis-health-effects-5.php
  8. Weight loss with treatment can help psoriatic arthritis.
    National Psoriasis Foundation. https://www.psoriasis.org/advance/weight-loss-with-treatment-can-help-psoriatic-arthritis
  9. Defining minimal disease activity in psoriatic arthritis: a
    proposed objective target for treatment. Annals of the Rheumatic Diseases.  https://ard.bmj.com/content/69/01/48
  10. Minimal disease
    activity in patients with psoriatic arthritis treated with ustekinumab: results
    from a 24-week real-world study. Clinical rheumatology. https://link.springer.com/article/10.1007%2Fs10067-017-3700-z
  11. Physical Activity and Psoratic Arthritis. National Psoriasis Foundation.
    https://www.psoriasis.org/psoriatic-arthritis/living-well/exercise




































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