Ch.4 Globalization and Eating Culture Flashcards
Problem of fast food culture
Fast food contains high sugar, salt and fat content which contribute to heart disease and obesity
Function and features of cholesterol
- Essential for many of the body’s metabolic processes, including hormone and bile production, and to help the body use vitamin D
- Cholesterol is the most prominent member of steroid family of lipids
- Cholesterol is found in the lipids, bloodstream and all your bodies cells.
- Form cell membrane, some hormones and needed in other function
Source of cholesterol
- Mainly from the saturated fats found in animals products.
2. Foods from plants do not contain cholesterol
Two types of cholesterol in the body
- Low density lipoprotein (LDL) cholesterol
- > bad cholesterol
- > it goes into the bloodstream and clogs up your arteries - High density lipoprotein (HDL) cholesterol
- > good cholesterol
- > it helps to take the bad cholesterol out of the bloodstream
Types of fat
- Saturated fat
- > no double bonds between carbon atoms - Mono-unsaturated fat
- > one double bond between carbon atoms - Polyunsaturated fat
- > two or more double bonds between carbon atoms - Trans fats
Which butter/margarine got the most trans fat
Margarine (stick)
Properties of saturated fatty acids
- Contain only single C-C bonds
- Closed packed
- Strong attractions between chains
- High melting points
- Solids at room temperature is
Properties of unsaturated fatty acids
- Few interactions between chains
- Low melting points
- Liquids at room temperature
Omega 3 and omega 6 fatty acids
- The body can’t make these fats, they must be gained via food
- Omega 3s are anti- inflammatory and help protect against heart disease
- Omega 6 fatty acids lower LDL cholesterol and reduce inflammation
Trans fat in foods
- Also called trans fatty acids
- Type of unsaturated fats
- Mainly formed during the process of hydrogenation of vegetable oils
- > allows the hydrogenated oil to have longer shelf-life and provide desirable texture to the food.
Source of trans fat
- Found naturally in small amounts in milk and fat of cow and sheep
- Formed in very low level during the refining of vegetable oils
- Formed mainly when hydrogen is added to vegetable oils under a process called “hydrogenation”
Health effects of trans fat
- Increase LDL cholesterol
- Decrease HDL cholesterol
- Increase he risk of cardiovascular disease
- More harmful than saturated fats
Source of Saturated fats
High proportion in most animal fats
E.g. Butter, lard, chicken skin, full cream milk, cheese)
And some vegetable oils
E.g. Coconut oil, palm oil
Health effects of saturated fats
- Increase LDL cholesterol
2. Increase the risk of cardiovascular disease
What is malnutrition
- An incorrect or unbalanced intake of nutrients
- The condition that results from taking an unbalanced diet in which certain nutrients are lacking , in excess ( too high an intake) or in the wrong proportion