You thought maybe

Dr. Sammons was making this stuff up?
In physorg.com from 2009,

Inhaling a heart attack: How air pollution can cause heart disease:

Accumulating evidence indicates that an increase in particulate air pollution is associated with an increase in heart attacks and deaths. Research has begun in the relatively new field of environmental cardiology — a field that examines the relationship between air pollution and heart disease.

This link owed to Laura Wiggins Norris and

NO COAL PLANT IN BEN HILL COUNTY!

-jsq