There are many substances that are toxic to our body and that can cause serious damage to our body, including death. These substances can be ingested, inhaled or enter the body by contact with the skin and cause damage even in small amounts.
When a person dies from unknown causes, it is necessary for a forensic science professional to do a substance test, to find out which substance reacted in the victim's glass and caused his death.
The term stress as it relates to the human condition first emerged in scientific literature in the 1930s, but it did not enter the popular vernacular until the 1970s (Lyon, 2012).
