1. weighing method: it is a commonly used dietary survey method. When weighing, we need to accurately grasp two aspects of information. One is the raw weight of various foods used in the kitchen and the cooked weight after cooking, thus obtaining the raw-cooked ratio of various foods.
The second is to weigh the cooked food eaten by individuals, and then calculate the weight of various raw foods of haunters according to the above raw-cooked ratio, and then calculate the daily intake of various raw foods of haunters. ?
A. Advantages: It can accurately reflect the food intake of the respondents and see the distribution of three meals a day.
B. Disadvantages: it consumes a lot of manpower and time and is not suitable for large-scale nutrition survey.
C. Scope of application: Weighing method can be used to investigate the consumption of various foods in three meals a day of a catering unit (collective canteen or family) or individual.
I. Dietary Guidelines for China Residents
A:
1, the food is diverse, mainly cereals.
2. Eat more fruits, vegetables and potatoes.
3. Eat milk, soybean or its products every day.
4. Eat proper amount of fish, poultry, eggs and lean meat.
5. Reduce the consumption of edible oil, and the diet is light and low in salt. 6. Eat too much, exercise every day and keep a healthy weight. 7. The distribution of three meals should be reasonable and snacks should be moderate.
8. Drink plenty of water every day and choose drinks reasonably.
9. If you drink, you should limit it.
10, eat fresh and hygienic food.
Second, the demand of each population for three nutrients.
1, adults: protein 10%- 15% 2, children and adolescents: protein 12%- 14%.
20%-30% fat, 25%-30% fat.
55%-65% of carbohydrate, 55%-65% of dietary fiber, 20-30g.
4. Standard weight and obesity standard 1, ideal weight (kg)= height (cm)- 105.
2. Body mass index = weight (kg) ÷ (height m) (not suitable for athletes)
Standard: 18.5-23.9 Overweight ≥24 Obesity ≥28 3, Waist circumference (judging centripetal/central obesity) Male ≥85 Female ≥80. 4, waist-hip ratio
Male > 0.9 female > 0.8 can be judged as central obesity.
5. Obesity = (measured weight-ideal weight) ÷ ideal weight × 100%
≤- 10% thin ≤ -20% emaciated ≥ 10% overweight ≥20% obese.
6. Rough formula for calculating children's weight
Standard weight (kg) = age (years) × 2+7 (under 3 years old).
Standard weight (kg)= age (years old) ×2+8(3 years old to pre-puberty) Standard height (cm)= age ×7+702.