New Review of Epidemiological Studies on Chronic Obstructive Pulmonary Disease in Farmers

Farmer_and_the_Livestock_(6139558944)[1]The authors concluded that farmers are at greater risk of developing COPD, with livestock farmers having the highest risk.  Potential responsible exposures include organic dusts, endotoxins, mites, ammonia, and hydrogen sulfide.

Source: PubMed abstract

Association Between Pesticide Profiles and IQ in Children

The authors evaluated the possible effects of multiple pesticides on children’s IQs when applied near maternal residences in agricultural areas.  For one of the eight pesticide profiles there was a significant association with IQ.  The authors also found that there was the potential for sub-additive effects between pesticides.

Source: PubMed Abstract

New Epidemiology Review Evaluates Protection Provided by Current OELs for Silica

The review found that a cricial analysis of the epidemiology supported a qualitative association between occupational exposure to silica and obstructive lung function, but the data quality was not sufficient to calculate a quantitative relationship or define a threshold above which there was an increased risk.

Source: PubMed Abstract

New Study on Setting Occupational Exposure Levels for Hydrocarbon Solvents

The method used assumes additivity between similar hydrocarbon solvents, which is based on the similar toxicological properties observed in studies.  According to the abstract, “Practical demonstrations on how to use these recommendations to develop occupational exposure advice in different situations (from simple complex solvents to blends of complex solvents) are also provided.”

Source: PubMed Abstract

New Study of Parkinsonism Symptoms in Washington Pesticide Handlers

Published in the Journal of Agromedicine by researchers from Washington University, UW, UC-SD, and University of the Witwatersrand (South Africa).   The researchers concluded, “Symptoms and signs of parkinsonism were absent to mild in this small sample of active workers who apply cholinesterase-inhibiting insecticides in Washington State, USA. Future studies should be larger, and examine older, retired workers with greater cumulative exposure to agricultural pesticides at work and home, including other types of agricultural pesticides.”

Source: PubMed Abstract

New Study on ALS and Occupational Exposures

A number of different associations have been found between occupational exposures and amyotrophic lateral sclerosis (ALS or Lou Gehrig’s disase) in epidemiology studies.  The newly released study did find a positive association with extremely low frequency magnetic fields, but did not find an association with a number of previously suspected chemical agents (e.g. solvents, pesticides, metals).

Source: PubMed Abstract