Article of Interest: Time’s Up for Chlorpyrifos on Food

May 26, 2021

Our team at the Hoffman Toxicant-Induced Loss of Tolerance (TILT) Program at UT Health San Antonio wanted to share this important external article: “Time’s up for chlorpyrifos on food in the US” from Chemical & Engineering News: In a win for environmental and farmworker groups, a federal appeals court ruled April 29 that the US […]




The Nose Knows, But Not Always

October 24, 2018

Odors can serve as important warning signals for Toxicant-Induced Loss of Tolerance (TILT). An odor can let us know when a chemical is present that is not good for us, or has the potential to make us sick. It is not always easy to identify a harmful chemical, however. Some initiators and/or triggers lack any […]


ADHD Has Doubled Among Girls

October 10, 2018

A new national study documents rising rates of ADHD, including in young girls. Unfortunately, there is no discussion of the environmental factors that can contribute to ADHD or how to control them. Our 2015 study on autism and ADHD demonstrated that mothers with high scores on the validated, 50-item chemical intolerance questionnaire—the QEESI—had triple the […]


Chemical Intolerance and Organic Foods

September 5, 2018

If you are among the subset of our population who is chemically intolerant, organic foods are the best choice for one simple reason— they are pesticide-free.


Pesticide Exposure during Pregnancy Increases the Risk of Autism and ADHD

August 22, 2018

Pregnant women and their developing children are especially vulnerable to chemical exposures. Finnish researchers recently found a link between pregnant mothers who were exposed to pesticides and having a son with autism. We already know that organophosphate pesticides interfere with neurodevelopment. Our study on autism, published in 2015 demonstrated that mothers with high scores on […]


Pesticides and Damaged Brains

October 30, 2017

Despite its ban for indoor use several years ago, Chlorpyrifos remains common in agriculture and other outdoor applications. An investigative report by New York Times columnist Nicolas Kristof decries this pesticide, deeming it a significant public health risk.




E.P.A. Promised ‘a New Day’ for the Agriculture Industry, Documents Reveal

September 12, 2017

Many individuals, including those suffering from Toxicant-Induced Loss of Tolerance or TILT and veterans with “Gulf War Illness” encountered chlorpyrifos, an organophosphate pesticide, linked to the initiation of chemical, food and drug intolerances. Decades later, unknown numbers still suffer from chronic multi-system symptoms and debilitating cognitive and mood difficulties that continue to be triggered and re-triggered […]




Oxidative Mechanisms Contributing to the Developmental Neurotoxicity of Nicotine and Chlorpyrifos

August 18, 2017

A 2005 study by Qiao D, et al., published in the journal of Toxicology and Applied Pharmacology demonstrates the potential benefits of Vitamin E in preventing the adverse effects of pesticides. Nicotine and chlorpyrifos, (a common pesticide), are known to harm the developing brain. Both promote the formation of oxidative radicals. Interestingly, nicotine is found to […]