FOOD20003 Lecture Notes - Lecture 2: Catabolism
28 Jun 2018
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WEEK 1 – OVERVIEW OF NUTRITION – PART 2
Conversion factors and definitions
Essential nutrients – must be obtained from food (cannot be generated by body)
Energy Units – 1kcal = 4.2kJ
Metabolism: process by which nutrients are broken down to yield energy or rearranged
into body structures (catabolic and anabolic)
3. THE SCIENCE OF NUTRITION
Nutrients provide the physical & metabolic basis for us
It is the study of nutrients and other substances in foods and the body’s handling of them
Types of studies:
oEpidemiological studies (cross-sectional, case-control, cohort designs)
Observe what people eat and how healthy they are
For case-control: scientists match people based on age, gender, diseases
etc so differences in other factors stand out
oLab-based studies (animal studies)
Feeding animals special diet that provide or omit specific nutrients
Observe changes in health
oHuman intervention/clinical trials
Asking people to adopt a new behaviour (i.e. exercising, taking
supplements etc)
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Week 1 overview of nutrition part 2. Essential nutrients must be obtained from food (cannot be generated by body) Metabolism: process by which nutrients are broken down to yield energy or rearranged into body structures (catabolic and anabolic) Nutrients provide the physical & metabolic basis for us. It is the study of nutrients and other substances in foods and the body"s handling of them. Types of studies: epidemiological studies (cross-sectional, case-control, cohort designs) Observe what people eat and how healthy they are. For case-control: scientists match people based on age, gender, diseases etc so differences in other factors stand out: lab-based studies (animal studies) Feeding animals special diet that provide or omit specific nutrients. Observe changes in health: human intervention/clinical trials. Asking people to adopt a new behaviour (i. e. exercising, taking supplements etc) Correlation shows a relationship between 2 factors: not cause and effect, indication as to a possible association that needs to be investigated.
