Unit 3: Food Sociology Flashcards
What are the 4 factors affecting food selection?
Physiological, Psychological, Economic and Social
Define Physiological factors.
Based on the body’s need and desire for food as well as the physical responses to it.
What are the physiological factors?
Hunger, appetite and satiety.
Sensory reactions to food
Food sensitivities
Nutritional requirements
What is hunger?
Hunger is the drive to satisfy the need for food
What is appetite?
Appetite is the want for food even when you’re not hungry - can be triggered by appearance and aroma.
What is satiety?
Satiety is the feeling of fullness when the body has received adequate amounts of food.
What are the sensory reactions to food?
Shape, turgor, flavour, aroma.
How does shape affect food selection?
It influences appeal, and people usually go for certain shapes.
How does turgor affect food selection?
Refers to the pressure placed on the cell wall or membrane by fluids within the cells.
Gives food a full, fresh appearance, and crisp texture.
How does flavour affect food selection?
Refers to the taste and smell.
Tastebuds decrease with age, therefore, young children prefer less flavour due to high sensitivities whereas older people add spice, salt and sugar.
Main tastes are sweet, bitter, savoury, salty and sour
How does aroma affect food selection?
Refers to the smell
Indicates freshness and stimulates appetite and influences taste.
Smell through both the front and back of the nasal cavity.
What are the 2 types of Food sensitivities?
Allergies and Intolerances.
What is an allergy?
Abnormal immune response to food (particularly the proteins within)
Reactions can occur soon after eating and can be mild to severe.
What are the symptoms of an allergy and how to adjust diet?
Symptoms include hives, diarrhoea, vomiting, swelling of the face and anaphylaxis through either traces or contact.
Adjust diet by avoiding food that causes reaction eg, nuts, shellfish, dairy
What is an intolerance?
Chemical reaction to foods rather than an immune response as an individual may not have enzymes to digest certain nutrients.
Reaction can occur many hours after eating
What are the symptoms of intolerance and how to adjust diet?
Symptoms include bloating, nausea, diarrhoea, joint pain and headaches.
Adjust diet by limiting or removing foods eg. lactose or gluten.
Define psychological factors.
Based on the mind, emotions and patterns of thinking and behaviour.