We're just learning about potential environmental causes of health problems and diseases. Epidemiology is a growing field. We should be particularly alert to the epidemiology of our state or region. For me, that's North Carolina. My mother died earlier this year at age 86. She had Parkinson's. She lived in the same house for 60 years. I can't help but wonder if her long exposure to agricultural pesticides, in particular, cotton defoliation, as fields nearby were sprayed frequently, were a factor in her developing Parkinson's. Here's a Stanford University study in 2000 linking Parkinson's and pesticides. As my siblings and I were also exposed as children to cotton defoliation, my sister forwarded me a recommendation from Dr. Robert Rowen, "Why People Who Eat This Spice Don't Get Parkinson's," to eat curcumin as well as some glutathione supplements, to offset the impact of pesticides on the brain.