Toxicologists research the hazards of chemical, biological, and physical agents at different levels of exposure. Their goal is to improve industrial and environmental safety. They also promote public health and protect the environment.
In general, toxicologists:
- Do lab studies on potentially harmful substances, such as drugs, food additives, solvents, and herbicides, or with high energy services such as radiation
- Determine the effects of these substances on lab animals, plants, and human tissues
- Research new tests for use in toxicological studies
- Assess potential risks based on levels and periods of exposure
- Study and evaluate data gathered from studies and peer-reviewed scientific documents
- Determine suitable controls for various chemical and physical hazards
- Develop standards or guidelines for safe levels of chemical and physical agents in workplaces, the air we breathe, the food we eat, the water we drink, and the environment (land-based, aquatic, and airborne)
- Inform and advise policy and program developers on the health and legal aspects of chemical use
- Supervise and coordinate technologists, technicians, or trainees (students)
- Share findings through publications such as journals and the media
Analytical toxicologists specialize in using detection methods for identifying and characterizing harmful compounds. This includes analyzing:
- Toxins (poisons that passively enter the body by being absorbed, swallowed or inhaled)
- Venoms (poisons that actively enter the body through a bite, spray, stab or sting)
- Toxicants (toxic substances produced by humans, directly or as a by-product of producing another substance) and environmental chemicals
- Poisonings or overdoses with pharmaceutical or illicit substances
- Versions of toxins, toxicants, or other poisons that have been transformed by the body’s metabolism
Clinical (biomedical) toxicologists work in medical environments or pharmaceutical companies. They study the effects of drugs or other chemicals on the human body. They may be part of a medical team responding to emergencies such as drug overdoses. Or they may monitor drug therapies for patients with certain diseases, such as epilepsy or asthma.
Environmental toxicologists study the effects of chemical, physical, and biological agents. They determine levels of toxicants in the environment. They study humans and other organisms that have been exposed to those agents through food, air, water, or soil. This helps them establish background or naturally occurring levels. They then identify acceptable guidelines.
Forensic toxicologists examine post-mortem body fluids and tissues for drugs and poisons. In general, they are called upon when deaths are suspicious, unexpected, or have no clear anatomical cause. They are concerned with the medical and legal aspects of impairment or death. These may relate to drugs, including alcohol. They often testify in court. They may help train police to use breath-testing equipment. Forensic toxicology also includes workplace drug testing. Some forensic toxicologists also perform sport-related testing for performance-enhancing drugs.
Industrial toxicologists test new products such as pesticides and drugs. This helps manufacturers determine a product’s toxicity. This is important during production to protect industrial workers. It also helps establish safe uses for consumers and the public.
Nutritional toxicologists test food additives and new food products. They study how additives interact with nutrients in foods to determine their safe use for consumers.
Regulatory toxicologists develop controls for safe uses of new chemical products. These can include industrial and agricultural chemicals and pharmaceuticals (prescription drugs).
Risk assessment toxicologists study the possible results of exposure to toxic substances. They develop guidelines for safe exposure.
Veterinary toxicologists study health problems or non-infectious diseases of unknown cause in animals. These are most often domestic animals (livestock or pets) or zoo species.