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Obesity and nutrition

This document outlines Dongliang Wang's contact information and provides an overview of obesity including its definition, harms, diagnosis, causes, and treatment through dietary changes. Key points discussed include defining obesity as 20% or more over ideal body weight, various health risks it poses, using BMI to diagnose it, the role of energy intake and expenditure in its development, and treating it by reducing total energy and fat intake while increasing protein and carbohydrates.

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Name: Dongliang Wang Department: Nutrition Email ： wdliang@mail.sysu.edu.cn Tel ： 13433965139
Outlines  What is obesity ？  Harmness of obesity ？  How to diagnose obesity ？  What causes obesity ？  How to treat obesity by nutrition ？
What is obesity ？ An abnormal accumulation of body fat, usually 20 percent or more over an individual’s ideal body weight.
Harmness of obesity ？ Stroke Heart disease Breath hard Fatty liver Diabetes Gall-stone Hampered sexuality Arthritis Misfortunes (obesity) never come singly
How to diagnose obesity ？ Use a expensive machine to quantify the weight of body fat
How to diagnose obesity by a cheap and convenient way?
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
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
How to treat obesity ？
Obesity therapy by reducing energy intake
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
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%
Obesity and nutrition