I tend to be near fastidious in citing references to support any statement of fact made in my writing. Thus, I’m not sure what to do now where a document declares itself off limits and asks the reader not to cite it.
Let me back up. I’ve been following air pollution studies closely, especially those on the fine particulates that are less than 2.5 micrograms in diameter referred to as PM2.5. This is really just very fine soot. Numerous studies link exposure to PM2.5 to higher risk of disease, in particular heart disease. I’ve recently reviewed one of these studies for the Natural Medicine Journal, a study by Ward-Caviness that looked at chronic PM2.5 exposure and outcomes for people suffering from heart failure. This study was published in the Journal of the American Heart Association in May 2021. These researchers used some fancy statistical tests to compare chronic exposure to PM2.5 in heart failure patients and their risk of ending up readmitted to the hospital after an initial cardiac event.










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