Agrochemical supporters tend to fall back on a “the dose makes the poison” theory, meaning tiny exposures aren’t really that harmful. Increasingly, though, independent scientists are debunking that belief, even proving that incredibly tiny doses could set a person up for health problems that might not crop up until decades down the line.
Here are 7 health problems associated with pesticide-based agrochemicals.
More than 260 studies link pesticides to various cancers, including lymphoma, leukemia, soft tissue sarcoma, and brain, breast, prostate, bone, bladder, thyroid, colon, liver, and lung cancers, among others.
More than 60 studies show a connection between pesticides and the neurological disease Parkinson’s, a condition characterized by uncontrolled trembling. The association is strongest for weed- and bug-killing chemical exposures over a long period of time, meaning it’s important to keep these toxic compounds out of your household routine.
The world’s leading autism researchers believe the condition develops from a mix of genes and the pollutants encountered in the mother’s womb and early in life. Many insecticides effectively kill bugs by throwing off normal neurological functioning. That same thing appears to be happening in some children. A 2010 Harvard study found that children with organophosphate pesticide breakdown materials in their urine were far more likely to live with ADHD than kids without the trace pesticide residues.
Babies conceived during the spring and summer months—a time of year when pesticide use is in full swing—face the highest risk of birth defects. During these months, higher pesticide levels turn up in surface waters, increasing a mother’s risk of exposure. Spina bifida, cleft lip, clubfoot, and Down syndrome rates are higher when moms become pregnant during high season for pesticides.
Pesticides spell trouble in the baby-making department, thanks to their bad habit of not staying put. For instance, atrazine, a common chemical weed killer used heavily in the Midwest, on Southern sugar cane farms, and on golf courses, has been detected in tap water. Doctors and scientists point to published evidence tying atrazine to increased miscarriage and infertility rates. Other pesticides cause a plunge in male testosterone levels. A 2006 study found chlorpyrifos, a chemical used in nonorganic apple and sweet pepper farming, and carbaryl, a go-to pesticide in strawberry fields and peach orchards, caused abnormally low testosterone levels.
Scientists have been noticing a link between pesticides and diabetes for years. The latest evidence comes out of the Endocrine Society’s 94th Annual Meeting, where Robert Sargis, MD, PhD, released the results of a study that suggest tolyfluanid, a fungicide used on farm crops, creates insulin resistance in fat cells. A 2011 study published in Diabetes Care found that overweight people with higher levels of organochlorine pesticides in their bodies also faced a higher risk of developing type 2 diabetes.
Some agrochemical pesticides act as hormone disruptors, meaning they act like a fake version of a naturally occurring hormone in your body, they block important hormone communication pathways in the body, or they interfere with your body’s ability to regulate the healthy release of hormones. More than 50 pesticides are classified as hormone disruptors, and some of them promote metabolic syndrome and obesity as they accumulate in your cells, according to 2012 study appearing in Environmental Health Perspectives.
*Excerpts taken from Leah Zerbe article on Rodale