Lecture 01 - Overview - 21 Jan 2015 Flashcards
Population Growth - What is ZPG - What problem was presented by Malthus in 1791?
- ZPG = Zero Population Growth = the number of children needed to be born to replentish the population (2.1 per capita)
- Malthus - Humans are unsustainable because there is a finite amount of land.
What are population pyramids?
A visual representation of the population distribution based on age.
Population Pyramids - What shape is a developing country? - What shape is a developed country?
Developing Country = triangle
Developed Country = rectangle
Reasons for the pyramid shape in a developing country
- problems with waste water because low income countries less likely to use improved sanitation methods
- problems with drinking water because low incomes less likely to get drinking water from an improved source.
- lack of immunizations = infectious disease - basically lots of PH problems
What environmental health programs could help change the pyramid shape for a developing country? (name 3)
- Vaccination programs
- drinking Water cleaning
- waste water cleaning
What are the birth rate trends in developing and developed countries?
- Developing = increasing
- Developed = stagnating
Also, urban population is increasing for low income countries and leveling off in high income countries
4 Methods of Disease Transmission (plus examples)
- Intestinal discharges = cholera, salmonella
- Nose and throat respiratory = influenza
- Animals = rabies, lyme - Insects = west nile
Past Enviro Health in USA (4 things)
- Earlu 1900s - control of diseases like TB, cholera, typhoid, other infectious diseases
- Success of sanitation = controlling disease through prevention and regulation
- Safe food, drinking water, sewage disposal
- Emphasis on educating the public
Checks to Population Growth (4)
- Push/Pull
- Urban v. Rural
- Squatting v. Homeless
- Environmental Supply/Demand (Biosphere)
4 Major Determinants of Health
- Heredity
- Environment (sanitation/controls)
- Lifestyle 4. Medical Care System
3 Major Causative Agents of Disease
- Microorganisms
- Chemical/Physical exposures
- Chronic Disease
List 2 types of pollution that were occurring in the 1960s that raised public awareness about environmental issues.
Visible pollution in the AIR and WATER (largely due to increased manufacturing)
List 5 sentinel events (total) that occurred in the 1960s and early 1970s that focused the public’s interest on issues of the environment.
- 1962, Silent Spring by Rachel Carson = dangers of pesticides on birds.
- Oil spills
- Drinking water contamination
- Untreated sewage
- Smog
What is DEEP?
Dept. of Energy and Environmental Protection
What is PURA and what does it report to?
Public Utilities Regulatory Authories
Reports to DEEP