1, go to a regular store and don't buy the "three noes" food around the campus and in the streets.

2. Buy food produced by regular manufacturers and try to choose brands with good reputation.

3. Check the product label carefully. Food labels must be marked with: product name, ingredient list, net content, factory name, address, production date, shelf life, product standard number, etc. Don't buy products with nonstandard labels.

4. Whether the food is suitable for your own consumption.

5. Don't blindly follow advertisements. Advertising does not represent science, but reflects the interests of businesses.

Second, what dietary hygiene habits should primary and secondary school students pay attention to?

1, boiled water is the best drink, and some drinks contain preservatives, pigments and so on. And regular drinking is not good for children's health;

2. Develop good hygiene habits to prevent the spread of intestinal parasitic diseases;

3. Wash raw vegetables and fruits before eating to avoid pesticide poisoning;

4. When choosing food, pay attention to the production date and shelf life of the food;

5. Try to eat less or not eat leftovers. If you eat leftovers, you must heat them thoroughly to prevent bacterial food poisoning;

6, do not eat raw food without health care, such as sashimi, raw water chestnut;

7. Do not eat street food without health protection;

8. Eat less fried, smoked and grilled food, which will produce toxic substances if it is not properly made.

Third, do primary and secondary school students eat sweets as much as possible?

Summer drinks are rich in sugar, and children who eat too much are prone to skin inflammation and various diseases. Eating too much sugar in summer will also produce a lot of acidic substances, thus breaking the normal acid-base balance of blood and making children acidic. Medical data show that 70% of diseases occur in people with acidic constitution, which undoubtedly makes children the "number one bed for slimming in Korea". In addition to the above functions, many drinks also lack protein and fat necessary for children's development. Drinking too much will affect children's eating dinner and cause malnutrition, so it is best not to drink more than 100 ml every day.

4. What are the nutritious foods that make students smart?

Nutritional foods that make students smart are:

1, eat more fish, egg yolk, shrimp skin, seaweed, kelp and lean meat.

2. Eat pig liver, animal brain and other animal viscera once a week.

Eat oranges, apples and other fruits rich in vitamin C every day.

4. Eat beans or bean products every day.

5. Eat mushrooms 1-2 times a week.

6. Eat more bananas, carrots and spinach.

Eat more milk, preferably children's formula containing taurine, instead of malt extract.

5. How can individuals prevent food poisoning?

1, wash your hands before and after meals;

2, cooked food placed for more than 2 hours, reheat to 70℃ or above before eating;

3. Wash and peel the fruits before eating;

4. Don't buy food of unknown origin and beyond the shelf life;

5. Don't buy food from small shops or roadside stalls without hygiene license and business license (especially those without sealed packaging);

6. Don't eat food that has been confirmed to be spoiled or suspected to be spoiled;

7. Don't eat food that you know that preservatives or pigments have been added, but you are not sure whether the added amount meets the food hygiene and safety standards.

6. What vegetables are best for children to eat in summer?

The water in melon vegetables is natural, clean, nutritious and bioactive water filtered by multi-layer biofilm, which is irreplaceable by drinking water. Summer is also the peak season for melons and vegetables, and its water content is above 90%. The water content of wax gourd ranks first among all dishes, reaching 96%, followed by cucumber, golden melon, loofah, bergamot, pumpkin and bitter gourd.

After the cool vegetables enter the summer, the biggest factor affecting the human body is the poison of summer dampness, so eating some cool vegetables is conducive to promoting fluid production and quenching thirst, clearing away heat and toxic materials, and relaxing bowels. Such as bitter gourd, towel gourd, cucumber, tomato, eggplant, celery, lettuce, asparagus, watercress and so on. They are all cool vegetables, so you might as well eat them often.

"Disinfecting" vegetables in summer is a season of frequent diseases, especially intestinal infectious diseases. At this time, eating more "sterilized" vegetables can play a role in preventing diseases. This kind of vegetables include garlic, onion, leek, chives, garlic sprouts and so on.

7. What should I pay attention to when drinking milk?

1, it is not advisable to drink alcohol on an empty stomach. Many people like to boil milk and drink it when it is cold, as a common drink and juice. Although this is convenient, drinking milk on an empty stomach will make the milk stay in the stomach too short and enter the excretory system too fast, thus affecting the comprehensive absorption of nutrients. Eat snacks, such as bread, when drinking milk. Biscuits, etc., to extend its residence time in the digestive system. Dietary health knowledge of nephropathy

It is not advisable to drink iced milk. Drinking cold or ice-filled milk can refresh you, but the stimulation of frozen milk on the stomach is easy to cause diarrhea.

3, not suitable for warm storage. Some people like to save trouble, cook milk in the morning, put it in a thermos and throw it away when they want to drink it. As we all know, milk, a nutritious beverage, is easy to breed bacteria in an environment with suitable temperature, which leads to milk spoilage.

4, should not be cooked for a long time. Some people boil milk for too long, but it's not good. Because boiled milk usually needs white sugar, and boiled for too long, lysine and white sugar in milk will produce fructosyl lysine at high temperature, which is a substance that is difficult to be digested and absorbed by human body.

5, it is not advisable to drink caked milk. If there are lumps or flocculent substances in milk, it is not suitable to drink any more, because such milk has gone bad.

Eight, how to distinguish the shelf life and shelf life of food?

The so-called shelf life (the best edible period and the shortest applicable date) refers to the period to maintain the quality under the storage conditions specified in the label. After this period, you can still take healthy and effective diet pills for a certain period of time.

Shelf life (suggested last edible date) refers to the expected date of termination of consumption under the storage conditions specified in the label, after which the product is no longer edible.

Nine, how to buy drinks correctly?

First of all, it depends on whether the label, QS mark, production date, shelf life, factory name and address are complete, and whether the ingredients in the ingredients meet the standards of this kind of beverage.

Secondly, choose the products that have been produced recently. When buying carbonated drinks, try to choose products that have been produced recently and whose tanks are hard and not easily deformed.

Third, the choice of drinks should vary from person to person. Fruit juice drinks have certain nutrients and are suitable for teenagers and children, but they cannot be drunk in large quantities for a long time or at one time.

X. Why are some bad habits of hands potentially dangerous?

There are many small moves in our hands that are involuntary and often repeated. For example, wiping your nose, scratching your hair, scratching your beard, touching your mouth and scratching, if these actions are combined with making drinks and food, there is a risk of mutual pollution. There have also been incidents in history in which diseases spread because of these behaviors. We should avoid these little tricks when making food. If you find these actions, you should wash your hands immediately and don't be afraid of trouble. This is especially true for collective canteens, hotels and restaurants. Developing good health habits is one of the important links to prevent the epidemic of diseases and ensure food hygiene.

XI。 Why should we avoid direct contact with ready-to-eat foods such as cooked food?

You have a lot of bacteria on your hands. Although you will wash food before touching it, it is impossible to wash it all off. Cooked food and other ready-to-eat foods are mostly unheated. Once the bacteria are contaminated, they will enter the human body with these foods, causing food poisoning. Wear gloves if you must handle food by hand (gloves are not needed if the food is already wrapped or needs to be cooked again). Pay attention to the following requirements when wearing gloves: 1. When gloves are damaged, contaminated or removed for any reason, these gloves should be discarded. 2. Change gloves between handling raw and cooked food. 3, gloves should be changed frequently (at least once an hour). 4. gloves can't be used after use.

Twelve, why do you say that leftovers should be thoroughly heated before eating?

All kinds of leftovers should be put into the refrigerator as soon as possible, and then heated thoroughly, which is the best way to eliminate the knowledge of health education of microbial pupils. The microorganisms may have grown and multiplied when the leftovers are stored, because proper storage can only slow down the growth of microorganisms, but can't kill them. Therefore, try to eat as much leftovers as possible. Thorough heating means that the temperature of all parts of food reaches at least 70℃. Usually this can ensure the hygienic quality of food. But it is best not to eat fresh vegetables overnight and every other meal. This is especially true for all kinds of leafy vegetables, such as Chinese cabbage, which contains a lot of nitrate. After a night, non-toxic nitrate will be transformed into highly toxic nitrite by bacteria. Nitrite can oxidize low-iron hemoglobin in human blood into methemoglobin, causing poisoning symptoms such as headache, dizziness, nausea, vomiting and palpitation. Nitrite is also a carcinogen.

13. What is the principle of food safety preparation 10 advocated by the World Health Organization?

1, select the food after safe treatment;

2. Cook food thoroughly;

3. Cooked food should be eaten immediately;

4. Pay attention to the storage of cooked food;

5, stored cooked food, thoroughly heated before eating;

6. Prevent raw food from polluting cooked food;

7. Wash your hands repeatedly;

8. Pay attention to keep the surface of kitchen utensils clean;

9. Prevent insects, mice and other animals from polluting food;