Download - Obesity and nutrition
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Outlines
What is obesity?
Harmness of obesity?
How to diagnose obesity?
What causes obesity?
How to treat obesity by nutrition?
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What is obesity?
An abnormal accumulation of body fat, usually 20 percent or more over an individual’s ideal body weight.
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Harmness of obesity?
Heart disease
Stroke
Breath hard
Fatty liver
Gall-stone
Hampered sexuality
Diabetes
Arthritis
Misfortunes (obesity) never come singly
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Use a expensive machine to quantify the weight of body fat
How to diagnose obesity?
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How to diagnose obesity by a
cheap and convenient way?
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Body mass index (BMI) is defined as the individual's body mass divided by the square of his or her height.
BMI, an widely used index for obesity
Requirement:
1. Early morning
2. Fasting state (have not breakfast)
3. Emptying feces and urine
4. Wearing a vest shirt and shorts
Western countries: BMI≥30
China: BMI≥28
Strong but not obesity
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What causes obesity?
Type I: Primary obesity (genetic factors)
Energy
expenditure Energy intake
Type II:Secondary obesity(disruption in energy balance)
90% obesity belongs to the secondary type
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How to treat obesity?
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Obesity therapy by reducing energy intake
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Which nutrients could provide energy ?
1. carbohydrate
2. protein
3. fat
4. mineral
5. vitamin
6. fibre
7. water
EnergyNutrients
1 g= 4 kcal
1 g= 4 kcal
1 g= 9 kcal
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Key points to prevent/treat obesity by modulation of diets
Healthy individual Obesity individual
Total energy intake
Protein
Fat
Carbohydrate
2420 Kcal 1935 Kcal 20%
242 Kcal 484 Kcal
605 Kcal
1573 Kcal
194 Kcal
1275 Kcal
200%
310%
19%
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