popular science on obesity and nutrition

1. Name: Dongliang Wang
Department: Nutrition
Email ：
wdliang@mail.sysu.edu.cn
Tel ： 13433965139

2. Outlines
 What is obesity ？
 Harmness of
obesity ？
 How to diagnose obesity ？
 What causes obesity ？
 How to treat obesity by nutrition ？

3. What is obesity ？
An abnormal accumulation of
body fat, usually 20 percent or
more over an individual’s ideal
body weight.

4. Harmness of obesity ？
Stroke
Heart
disease
Breath
hard
Fatty liver Diabetes
Gall-stone
Hampered
sexuality
Arthritis
Misfortunes (obesity) never come singly

5. How to diagnose obesity ？
Use a expensive machine to quantify the weight of body fat

6. How to diagnose obesity by a
cheap and convenient way?

7. BMI, an widely used index for obesity
Body mass index (BMI) is defined as
Western countries: BMI≥30
the individual's body mass divided by
the square of his or her height. China: BMI≥28
Requirement:
2. Early morning
3. Fasting state (have not breakfast)
4. Emptying feces and urine
5. Wearing a vest shirt and shorts
Strong but not obesity

8. What causes obesity ？
Energy
Energy intake
expenditure
Type I: Primary obesity Type II:Secondary obesity
(genetic factors) (disruption in energy balance)
90% obesity belongs to
the secondary type

9. How to treat obesity ？

10. Obesity therapy by reducing energy intake

11. Which nutrients could provide energy ?
Nutrients Energy
1. carbohydrate 1 g= 4 kcal
2. protein 1 g= 4 kcal
3. fat 1 g= 9 kcal
4. mineral
5. vitamin
6. fibre
7. water

12. Key points to prevent/treat obesity by modulation of diets
Healthy individual Obesity individual
Total energy intake 2420 Kcal 1935 Kcal 20%
Protein 242 Kcal 484 Kcal 200%
Fat 605 Kcal 194 Kcal 310%
Carbohydrate 1573 Kcal 1275 Kcal 19%