1. Food Nutrition and Public Health
UG3, Semester 6
Course Code: FAB-361
Food Nutrition and Public Health
Lecture X

2. Epidemiology
The study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to control of health problems.
epidemiologists study sick and healthy people
to determine the crucial difference between those who get the disease and those who are spared
epidemiologists study exposed and non-exposed people
to determine the crucial effect of the exposure

3. Uses of Epidemiology..

4. Two Broad Types of Epidemiology..

7. Person.....

8. Geographic Place....
Time.....
Time since an event
Age
Seasonality

9. Jemal et. al., 2010

10. Trends in lung cancer mortality rates by sex in select countries, 1950-2006
Jemal et. al., 2010

12. Host..... Agent..... Environment..... Personal traits Behaviours
Genetic predisposition
Immunologic factor
Agent.....
Influence the chance for disease or its severity
Biological
Physical
Chemical
Environment.....
Contribute to the disease process
External conditions
Physical/biological/social

13. Epidemics Occur when
host, agent and environmental factors are not in balance
due to new agent.
due to change in existing agent (infectivity, pathogenicity, virulence).
due to change in number of susceptibles in the population
due to environmental changes that affect transmission
of the agent or growth of the agent.

14. A Mixed Bag in Michigan