"Rational Diet and Food Safety" PPT download

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"Rational Diet and Food Safety" PPT download

Part One: Course Knowledge Points

Knowledge point 1: Nutritional evaluation indicates whether the diet is reasonable

To achieve a reasonable diet, you must first understand your own nutritional status. The evaluation method is generally to first measure your height (m) and weight (kg), and then evaluate according to body mass index.

Knowledge point 2: Eating habits and dietary structure affect nutritional status

1. Nutritional disorders

Both malnutrition and overnutrition are malnutrition, and the main cause of malnutrition is poor eating habits and unreasonable dietary structure.

2. Unreasonable diet structure

(1) The proportion of staple food and non-staple food is unreasonable;

(2) Use fruits instead of vegetables;

(3) The daily intake of vegetables is very small;

(4) Too many sweets;

(5) Insufficient daily water intake;

(6) Use high-sugar drinks or carbonated drinks instead of drinking water.

Knowledge point 3: A balanced diet is good for health

1. Basic requirements for a balanced diet

Eat a variety of foods, mainly cereals; eat more vegetables, fruits and potatoes; often eat milk, beans or their products; often eat appropriate amounts of fish, poultry, eggs, and lean meat, and eat less fatty meat and meat oil; the diet should be light Less salt; alcohol consumption should be limited; food should be clean and hygienic and not spoiled.

2. Balanced Diet Pagoda

It can be seen from the "Balanced Diet Pagoda" that among the three meals a day, cereals are the most consumed, followed by vegetables and fruits, and fats and oils are the least.

3. Adolescents have special nutritional needs

Teenagers are in a period of vigorous growth and development and have greater needs for various nutrients. The nutrient that teenagers need the most in a day is sugar, which is the main supplier of energy for the human body; followed by protein, teenagers need to supplement enough protein to meet the needs of body growth and development. Since teenagers are in the period of physical growth, they need relatively more vitamins and inorganic salts, especially calcium.

Reasonable Diet and Food Safety PPT, Part 2: Examination Points

Test points: Picture recognition and judgment questions on reasonable meals

[Example question] (2017·Shandong Linyi High School Entrance Examination) May 20th every year is the "Chinese Student Nutrition Day". Relevant data show that the situation of malnutrition and overnutrition among Chinese students is worrying. The picture below shows the proportion of food consumed by different groups of people every day. Which of the following statements is correct ()

A. Fruits and vegetables only provide the human body with two types of nutrients: water and inorganic salts.

B. Cereal foods contain more protein

C. Obese patients should reduce their intake of grains and meat

D. The reason for malnutrition is that the intake of fruits and vegetables is less than that of grains.

Analysis Fruits and vegetables mainly provide nutrients such as vitamins, water and inorganic salts to the human body. Protein is mainly obtained from lean meat, fish, milk, eggs, beans and other foods, while grain foods contain more starch. It can be seen from the graph that obese patients consume more cereals and meat in their diet than normal people. Therefore, obese patients should reduce their intake of cereals and meat. The cause of malnutrition is unreasonable eating habits and dietary structure, not less intake of fruits and vegetables than grains.

Answer C

Reasonable Diet and Food Safety PPT, Part 3: Classroom Activities

Activity "Self-design and analyze the nutritional status of a day's recipes" discussion topic

1. How to evaluate whether your diet structure is reasonable?

Tips: If your physique reaches a weak alkaline level, your weight is within the standard range, and your nutrient indicators are up to standard, it proves that your diet structure is reasonable.

2. What problems do you think there are in your dietary structure?

Tips: Make a detailed analysis based on your actual dietary situation.

3. How to further modify your recipes to make them more scientific and reasonable?

Tip: Combine the contents of the Balanced Diet Pagoda to achieve a reasonable diet and formulate a reasonable diet plan.

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For more information about the PPT courseware "Human Nutrition, Reasonable Diet and Food Safety", please click the Human Body Nutrition ppt, Reasonable Diet and Food Safety ppt tag.

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Update Time: 2024-09-09

This template belongs to biology courseware Beijing Normal University Edition Seventh Grade Biology Volume 2 industry PPT template

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