People with lower socioeconomic status not only die at a younger age and have a higher likelihood of having a major illness or condition, they also experience daily colds, influenza, headache, and pain at higher rates than those with higher socioeconomic status.
Gallup https://news.gallup.com/poll/127331/Socioeconomic-Gradient-Daily-Colds-Influenza-Headaches-Pain.aspx
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