Reevaluating tear gas toxicity and safety.

Area of Science:

• Toxicology
• Environmental Health
• Public Health

Background:

• Tear gases, or chemical demonstration control agents (DCA), were developed as incapacitating agents.
• Despite being banned for warfare, these chemicals are utilized in domestic law enforcement.
• Existing research on DCA safety is limited and often outdated.

Purpose of the Study:

• To review and summarize existing scientific literature on tear gas safety.
• To identify gaps in current knowledge regarding human health and environmental impacts.
• To assess the adequacy of current safety data for domestic use.

Main Methods:

• Comprehensive literature review of animal, environmental, and human studies on tear gas.
• Analysis of study methodologies, including data limitations and variable parsing.
• Evaluation of the scientific evidence supporting DCA safety claims.

Main Results:

• A significant lack of robust scientific evidence supports the safety of tear gas exposure.
• Many studies are decades old and fail to account for chemical type, exposure duration, or individual variability.
• Current data does not adequately address long-term health consequences or environmental effects.

Conclusions:

• There is a critical need for a reevaluation of chemical DCA safety.
• More comprehensive, up-to-date studies are necessary to understand the risks associated with tear gas.
• Current safety assessments are insufficient given the available scientific evidence.