Environmental Health Cheat Sheet

The core ideas of Environmental Health distilled into a single, scannable reference — perfect for review or quick lookup.

PiqCue — piqcue.com/environmental-health/cheatsheet

Quick Reference

Exposure Assessment

The process of measuring or estimating the intensity, frequency, and duration of human contact with environmental agents such as chemicals, biological organisms, or physical hazards. It is a critical step in environmental health risk evaluation.

Dose-Response Relationship

The principle that the magnitude of a biological effect (response) is related to the amount of exposure (dose) to an environmental agent. This relationship is foundational to toxicology and is used to establish safe exposure limits.

Environmental Justice

The fair treatment and meaningful involvement of all people regardless of race, income, or national origin with respect to the development and enforcement of environmental laws, regulations, and policies. It addresses the disproportionate environmental burdens borne by marginalized communities.

Risk Assessment

A systematic process for evaluating the potential health effects of environmental exposures. The four-step framework includes hazard identification, dose-response assessment, exposure assessment, and risk characterization.

Bioaccumulation and Biomagnification

Bioaccumulation is the gradual buildup of a substance in an organism over time. Biomagnification is the increasing concentration of a substance as it moves up the food chain, with top predators accumulating the highest levels.

Endocrine Disruptors

Chemicals that interfere with the endocrine (hormonal) system, potentially causing developmental, reproductive, neurological, and immune effects. They can mimic, block, or alter hormone signaling even at very low doses.

Epidemiological Study Design

The methodology used to investigate the relationship between environmental exposures and health outcomes in human populations. Common designs include cohort studies, case-control studies, and cross-sectional surveys.

One Health Approach

An integrated framework recognizing that human health, animal health, and ecosystem health are interconnected. It promotes collaboration across disciplines to address threats at the human-animal-environment interface.

Precautionary Principle

The concept that when an activity raises threats of harm to human health or the environment, precautionary measures should be taken even if some cause-and-effect relationships are not fully established scientifically.

Environmental Epidemiology

A subdiscipline focused on studying the distribution and determinants of health outcomes related to environmental exposures in populations, using observational methods to establish associations between exposures and disease.

Key Terms at a Glance

Asbestos:A group of naturally occurring fibrous minerals formerly used in construction and insulation. Inhalation of asbestos fibers causes mesothelioma, asbestosis, and lung cancer.

Bioaccumulation:The buildup of a chemical substance in an organism's body over time, occurring when absorption exceeds metabolism and excretion.

Biomarker:A measurable biological indicator of environmental exposure, disease state, or physiological change, such as blood lead levels or urinary metabolites of pesticides.

Biomagnification:The increasing concentration of a persistent toxic substance at each successive trophic level in a food chain.

Brownfield:A former industrial or commercial property where redevelopment is complicated by the presence or potential presence of hazardous substances or contaminants.

Carcinogen:An agent (chemical, physical, or biological) capable of causing cancer. Classifications are maintained by IARC, EPA, and other agencies.

Criteria Pollutants:Six common air pollutants regulated by the EPA under NAAQS: ground-level ozone, particulate matter, carbon monoxide, lead, sulfur dioxide, and nitrogen dioxide.

Dose-Response:The quantitative relationship between the amount of exposure to a substance and the resulting health effect.

Endocrine Disruptor:A chemical that interferes with the body's hormonal system, potentially causing adverse developmental, reproductive, or neurological effects.

Environmental Justice:The equitable distribution of environmental risks and benefits, ensuring no group bears a disproportionate share of environmental hazards.

Epidemiology:The study of the distribution and determinants of health-related states and events in populations, and the application of this study to control health problems.

Exposure Pathway:The route by which a contaminant moves from its source to a receptor (human), including source, transport medium, point of contact, and route of entry (inhalation, ingestion, dermal).

Hazardous Waste:Waste that poses a substantial or potential threat to public health or the environment due to its quantity, concentration, or physical, chemical, or infectious characteristics.

Maximum Contaminant Level (MCL):The highest level of a contaminant allowed in drinking water under the Safe Drinking Water Act. Set by the EPA to protect public health.

Morbidity:The rate or frequency of disease occurrence in a population. Used in environmental health to measure the burden of illness from environmental exposures.

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