Environmental Health. What is the relationship between the health of the planet and our own health?. Types of Environmental Health Hazards.
What is the relationship between the health of the planet and our own health?
Identifying hazards in the environment is just one part of environmental health. Scientists also want to understand
how these hazards affect people.
The study of how poisonous substances affect an organism’s health
Toxicity is a measure of how harmful a substance is.
Toxicologists look at toxicity by determining dose-response relationships.
Did You Know?Thalidomide, a drug that currently shows promise for treatment of Alzheimer's, AIDS, and some cancers, caused thousands of severe birth defects when it was used as an anti-nauseal in the 1950s and 60s.
Risk AssessmentScientists try to determine how likely it is that a given hazard will cause harm. With chemical hazards, scientists determine toxicity, human exposure, frequency of exposure, concentration of exposure, etc.
Three quarters of infectious disease deaths are caused by five types of diseases: respiratory infections, AIDS, diarrheal diseases, tuberculosis, and malaria.
Biological and Social Health Hazards in the Environment
Did You Know?In 2002, AIDS killed about 2 million people worldwide— almost equal to the entire population of Arkansas.
Click HERE: History of Pandemics
Chemicals are all around us, and all of them can be harmful to our health in large enough amounts. In other words, “The dose makes the poison.”
Chemical Health Hazards
in the Environment
Dust mite protein is a common allergen.
A landslide caused by the Great Sichuan Earthquake in Sichuan Province, China
Although we cannot prevent most natural disasters, there are steps that scientists, engineers, governments, and citizens can take to resist damage and deal with the aftermath.
Physical Health Hazards
in the Environment
CLICK HERE: Mercury in fish