Medical Expert Witness Forensic Toxicologist | Medical Expert Witness Services & More | Dr. Nachman Brautbar

What is Environmental Toxicology?

Environmental Toxicology(Toxic & Chemical Exposures)

As an expert witness, Dr. Brautbar can provide expert medical opinion in regards to health effects, causation, and future medical monitoring related to toxic & chemical Exposures. Dr. Brautbar has testified as an expert witness and provided scientific evidence as to the cause and effect relationship between exposure and health effects, including, but not limited to:

Exposure to Toxic & Irritant Chemicals

Upper & Lower Respiratory Tract Symptoms (Asthma, Reactive Airway Disease, Pulmonary Fibrosis), Kidney Failure, Liver Damage, Cardiovascular Effects, Central & Peripheral Nervous System Symptoms, Gastrointestinal Manifestations, and Metabolic Effects.

Exposure to Carcinogenic Agents:

Leukemias, Lymphomas, Myelomas, Myelodysplasias Lung Cancer, Mesothelioma, Stomach Cancer, Bladder Cancer, Kidney Cancer, Liver Cancer, and Brain Cancer.

Due to the ever changing regulations, re-classification of chemical hazards, recently discovered health effects, and newly published information, Dr. Brautbar has kept himself abreast of the current developments and recent peer-reviewed publications, and is continuously expanding his knowledge. He’s also been awarded a certificate by the city of Los Angeles, CA for teaching and researching the field of medicine. Dr. Brautbar has extensive experience in providing expert medical opinion regarding the forensic, occupational, clinical, and environmental aspects of exposure to the following toxins, among others:

  • Gasoline
  • Diesel
  • Benzene
  • MTBE
  • Ammonia
  • Solvents
  • Manganese
  • Lead
  • Hydrochloric Acid
  • Asbestos
  • Chromium
  • Cadmium
  • Dioxins
  • Carbon Tetrachloride
  • Molds
  • Latex
  • Formaldehyde
  • Trichloroethylene
  • Pesticides
  • Herbicides
  • Perchloroethyhlene
  • PAH's
  • Drinking Water Contamination
  • BTEX (Benzene, Toluene, Ethyl Benzene, & Xylene)

The multidisciplinary science of environmental toxicology is important in studying the effects of chemical, biological and physical agents on individuals, animals, land, water and air. Environmental toxicologists investigate and provide evidence to understand the biological effect chemical agents have on DNA mutations, linkage to cancers, increases in morbidity and mortality rates. Statistical information collected from the toxicology studies assists with identifying rate and amount of exposure that is detrimental, along with finding agents to counteract effects. Environmental toxicology information is also useful as forensic evidence in criminal or negligent cases, for example exposure to nuclear material from an accident or purposeful criminal act, such as adding arsenic to someone’s food or drinking water.

There is supporting evidence that the ozone layer is deteriorating and that skin cancer rates have increased. Environmental statistical data on air pollution's effect on man and animal is useful for local, state and federal agencies in creating and enforcing laws related to air pollution. Chemicals and other toxic agents in our water and soil is another area of research with legal implications. Some chemicals in small quantities are added to the soil and water systems to destroy or control harmful bacteria, or to assist in growing crops, but when application procedures are not followed there is a potential for introduction of toxic levels, which could lead to dangerous environmental diseases.


Dr. Brautbar is a board-certified internist and nephrologist. If you are interested in Dr. Brautbar's services as a forensic toxicologist, toxicology expert witness or his other specializations, please submit the Contact Form.


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