Hi, I am writing an article titled: 5 Foods You Should Avoid With Arthritis (& 4 That Could Help). Can you please write me an introduction paragraph and include all of the following in the content: 
- Arthritis - joint condition, many different types
- Painful flare-ups can be triggered by weather, stress, or lifestyle choices, such as what we drink or eat
- Healthy lifestyle can improve our lives in many ways - some foods can help strengthen bones + boost immune system, which can help ease pain + arthritis symptoms
- Here are some foods you should avoid with arthritis + some that can help
- Use keyword: foods to avoid with psoriatic arthritis The letter c should appear at least 3 times.
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