Research continues to link many medically unexplained symptoms and syndromes with exposures to chemicals, foods, and drugs.
Take the TILT Self Assessment to help identify and understand potential connections between symptoms and exposures for diagnosis, prevention, and treatment. The TILT Self Assessment was created by the TILT Research Program for Chemical Intolerance at UT Health San Antonio.
Share the results with your doctors!
The TILT Self Assessment is a complete evaluation to assess one’s chemical intolerance. The Self Assessment Test includes the Quick Environmental Exposure and Sensitivity Inventory (QEESI) and a 7-item exposure history.
Join the research
Future research participation
Join as a future research participant. You do not have to have chemical intolerance or be TILTed to join. By studying people with and without chemical intolerance we will further understand the underlying biological mechanisms that are responsible for chemical intolerance symptoms. If you are interested in participating as a future participant please contact us. Share your story and indicate you’d like to join the registry. Contact us to be a future research participant
Environmental House Calls
Our Environmental House Calls study demonstrated that indoor air quality was important in reducing symptoms of chemical intolerance. Homes of participants were assessed and inspected for TILT triggers. Recommendations for better air quality and removal of potential household triggers were given. In follow-up visits we determine if air quality has improved and if triggers were removed. We found that symptoms improved among the participants who improved indoor air. The results of this study are published and available here: Does improving indoor air quality lessen symptoms associated with chemical intolerance?.
Share your story
If you are TILTed, we’d like to hear about your experience. Was there a particular environmental exposure that initiated your illness? Would you be interested in joining a TILT participant registry?
Donate
Our research can be advanced through your generous donation. How your donation will help us:
- Develop a pipeline of knowledgeable health professionals who recognize and address the complex challenges people with TILT are facing.
- Improve participants’ health by conducting Environmental House Calls to help us identify environmental triggers and recommend ways to reduce exposures.
- Identify medical tests to help diagnose TILT and optimize treatment.

Over 55,000 individuals have completed the QEESI as part of research.
Researchers in nearly a dozen countries have used the QEESI for assessing Chemical Intolerance.
Listen to how these individuals describe their symptoms, which are triggered by chemicals, foods, drugs and that never bothered them before.