Toxicology combines the elements of biology and chemistry with many other disciplines to help us understand the effects of chemicals on living organisms.

  • Toxicologists develop new and better ways to determine the potentially harmful effects of chemical and physical agents and the amount that will cause such effects. An essential part of this is to develop an understanding of the basic molecular, biochemical, and cellular processes responsible for diseases caused by exposure to chemical or physical substances.
  • Toxicologists design and carry out carefully controlled studies of specific chemicals of social and economic importance to determine the conditions under which they can be used safely (i.e.; have little or no impact on human health or the environment); and
  • Toxicologists assess the probability or likelihood, that particular chemicals, processes, or situations present a significant risk to human health and/or the environment, and assist in the establishment of rules and regulations aimed at protecting and preserving human health and the environment.


Entrance in the graduate program begins in the fall semester. Applications are accepted between September and February and the applicants are encouraged to apply as soon as possible. Applications from US citizens and resident aliens submitted before January 15 will be considered for institutional fellowships. The final deadline for application submission is March 1. Applications are no longer being accepted for Fall 2024.

Training Options

The Toxicology training program at Texas A&M University has three main elements: (i) thesis-based masters (MS) ; (ii) pre-doctoral (PhD), and (iii) postdoctoral training. This program is not based in one department, but is inter-disciplinary in nature where trainees may select faculty from twenty TAMU departments in five colleges, two divisions of the Health Science Center, and three associated laboratories.