发生这些症状的原因是，你的免疫系统错误地开始攻击关节内部，使其发炎。

This occurs because your immune system mistakenly starts attacking the linings of your joints, making them inflamed.

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尽管具体作用方式尚不完全明了，但研究人员认为，腹部的多余脂肪组织限制了气道并使其发炎，从而增加了罹患哮喘的风险。

While the specific pathways aren't crystal clear, excess fat tissue in the abdomen is thought to increase the risk for asthma by restricting and inflaming airways.

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