Pesticide exposure may be positively associated with depression. Few previous studies have considered the episodic nature of depression or examined individual pesticides. The researchers evaluated associations between pesticide exposure and depression among male
private pesticide applicators in the Agricultural Health Study.

Reasons for the variability in survival among ALS cases are unknown but may include exposure to environmental neurotoxicants. The authors aimed to determine whether lead exposure, assessed by measuring blood and bone lead levels, is associated with survival in amyotrophic lateral sclerosis (ALS).