Topic 2: Eating and body-weight control Flashcards
- Physiological regulation
a) Short term regulation
- level of blood sugar
- Fullness of the stomach and other visceral, interoceptive stimuli
- Body temperature
b) Long term regulations
- Responsible for stable body weight
- Environmental stimuli
Taste, smell & learning
3.Social and cultural factors
Determine how much to eat, idael body weight etc
Changes from culture to culture
Pathological eating habits
Anorexia Nervosa, Binge eating disorder, Bulimia Nervosa, Othrorexia Nervosa
Obesity
Chronic disease, characterized by an excess of body fat
- eat more than we need - much less active than some years ago
Unsolved emotional problems may be a cause of obesity(hunger for love)
No personality correlates of obesity
Anorexia Nervosa
- Achieving pathological slimness through self starvation, overtraining and feeling fat even much below ideal body weight.
- Intense fear of becoming fat
- No menstruation
- Extremely conserned about the weight and shape of their body
Binge eating disorder
Periods of uncontrolled, impulsive, or continuously eating to the point of feeling uncomfortably full.
May result in fasting or dieting, and feeling of shame and self-hatred
May strugglewith anxiety, depression and loneliness
Bulemia Nervosa
Secret cycles of binge eating followed by getting rid of the calories. the cycles are repeated.
Extremely concerned about their weight and body shape.
Body weight may vary form normal to mild, moderate or severe obesity.
Orthorexia Nervosa
Taking the concept of healty eating to a level that influences your daily life. May become physically dangerous.
Energy use in the body
2/3 of the energy is used for metabolism and body functioning.
1/3 of the energy is used for real activity
Body Mass Index (BMI)
Measures you hight/weight ratio. (kg/m^2)
Underweight = BMI below 18,5
Normal weight = BMI between 18,5-24,9
Overweight = BMI between 25-29,9
Obesity = BMI 30 or greater
Set point hypothesis
States that everybody has a biologically determined, homeostatically defended, ideal body weight, which would explaine the normally stable body weight
“set point” would be determined by number of fat cells. “set point” can according to this not be changed in adults
The setting point hypothesis
States that there are no homeostatically defended ideal body weight, rather body weight can and does stabilize around any point, if food intakes and energy used are stable.
Restraint
Food intake is influenced by the balance between the physiological factors promoting the desire to eat, and the cognitively mediated efforts to overcome this desire
This cognetive struggle is called the Dietary Restraint
Levels of food intake and body weight regulation
- Physiological regulation
- Environmental stimuli
- Social and cultural factors