One circumstance which should cause concern because of its predominance in society and its difficulty in avoidance is car and truck exhaust.
Gasoline contains many toxic chemicals such as benzene, xylene, toluene and many other additives.
Dr. Gary Ginsberg and associates exposed test animals to this vehicle exhaust contaminant. Remember, it is the DNA and Genes that control the white blood cell movements and function. In other research involving vehicle exhaust and the immune system, Dr. John Sullivan, Medical Director of the University of Arizona Health Science Center, stated in a 1989 report that automobile exhaust lowered the interferon levels produced by macrophages. After Diesel Exposure Diesel exhaust contains different toxic chemicals than gasoline exhaust. A 1985 study by the National Institute for Occupational Safety and Health found that lab animals had an increased virus growth rate after exposure to diesel exhaust.