A new study recently published in American Journal of Industrial Medicine has discovered that farmers, hairdressers, aircraft mechanics, welders, teachers, clergymen and bank tellers appear to have the highest odds of dying from Alzheimer's and/or Parkinson's.

According to Robert Park of the National Institute for Occupational Safety and Health his study shows that many of the associations can be explained by on-the-job exposures to the chemicals that farmers, welders and hairdressers routinely use or inhale.

However, Park has been unable to identify why the increase of brain disease amoung teachers, clergymen and bank tellers.

It's thought that genes are a big factor but growing evidence also points to environmental factors, including some on-the-job exposures, and this research supports this.

For example, farmers exposed to pesticides have been shown in some studies to have a higher-than-average risk of Parkinson's disease, as have welders exposed to fumes containing the mineral manganese.

Hairdressers were at increased risk of death from Alzheimer's disease, presenile dementia and motor neuron disease.

These findings suggest a role for hair dyes, solvents or other chemicals used in salons.

Based on my research and review of the medical literature, I believe that the reason for the high incidence of brain diseases amoung teachers, clergymen and bank tellers is linked to indoor pollution.

source - Dr. Grisanti