For the past 13 years the American Lung Association releases a new State of the Air Report annually sharing their test results of air pollution across the United States.
You can find the list of the Most Polluted Cities in the United States 2012:
Chronic disease
The Importance of Methyl Groups!
–by Dr. Michael L. Johnson Did you ever wonder WHY all of a sudden someone develops a neurodegenerative disorder, heart disease, an autoimmune condition or
Schei, MD
May 9, 2013
