1, when reading and writing, the distance between the eyes and the book should be one foot.
In order to protect your teeth, you must brush your teeth in the morning and evening.
When watching TV, the seat should be at least two meters away from the TV.
4. To prevent ascariasis and ascariasis, pay attention to food hygiene, do not drink raw water, and wash and peel raw fruits and vegetables.
5. The heart is in the left chest of the human body.
6. The lungs are in the chest of the human body.
7. The prevention of influenza is mainly to go to public places as little as possible during the influenza epidemic.
8. To prevent intestinal infectious diseases, it is necessary to prevent "people from entering the mouth"; Develop good hygiene habits and wash your hands before and after meals.
9. To prevent hepatitis A, we should do the following: pay attention to food hygiene; Drink boiled water; Wash your hands before and after meals.
10. Rats mainly transmit epidemic hemorrhagic fever.
1 1, flies can spread intestinal infections.
12, prevent anemia, eat more foods with high iron content such as animal liver and kelp.
Smoking can cause lung cancer.
14. Bone, shrimp skin and bean products contain more calcium and phosphorus.
15, after being bitten by a dog, you must go to the epidemic prevention department to treat the wound and inject rabies vaccine in time.
The second part:
1. Brushing your teeth in the morning and evening is one of the effective ways to protect your teeth.
2. Correct reading and writing posture is beneficial to protecting eyesight.
Because raw water contains bacteria and eggs, you can't drink it.
You can't go swimming in the swimming pool when pinkeye is popular.
5. The function of lung is to inhale oxygen continuously and exhale carbon dioxide.
6. Preventing myopia is mainly to achieve "three wants and three don't".
7. Hepatitis A is a highly contagious infectious disease.
8. Vaccination with BCG vaccine on time is a safe and effective method to prevent tuberculosis.
9. Sugar is good for protecting the liver.
10, not only do a good job in family hygiene, but also do a good job in environmental hygiene.
1 1, physical exercise is beneficial to our growth and physical fitness.
12, boys should not wear tight pants in the early adolescence, and girls should not wear corsets, waists and high heels.
13, children can't smoke; Because smoking is very harmful to health.
14. The simplest and most economical way to prevent iodine deficiency disorders is to insist on eating iodized salt for a long time.
The third part:
Our body consists of head, neck, trunk and limbs.
Vaccination can prevent diseases and keep healthy.
3, the correct way to brush your teeth is to brush the toothbrush, the upper teeth are brushed from top to bottom, the lower teeth are brushed from bottom to top, and the mandibular surface is brushed back and forth, from top to bottom.
The function of stomach is to digest food, absorb nutrition and discharge dregs.
The main function of teeth is to chew food.
True health means that a person's body, mind and ability to adapt to society and environment are in good condition.
7. The main function of fat is to supply human body with heat; Maintain body temperature; Promote the absorption of fat-soluble vitamins; Protecting internal organs and moisturizing the skin are very important to the human body.
8. To maintain public health, we must do a good job in residential areas, streets and public places and take good care of public health facilities.
9. To prevent anemia, we should correct bad eating habits such as partial eclipse and picky eaters.
10. First-aid facilities include emergency telephones (120); Ambulances and hospital emergency rooms, etc.
Don't eat fried things on the roadside, eat more fruits and vegetables and eat less fried things, overnight dishes or spoiled food.
Improper food collocation can lead to diseases.
Seafood and beer are prone to gout. Seafood contains purine and monophosphate, while beer is rich in vitamin B 1, which is an important catalyst for decomposing these two components. If you drink beer while eating seafood, it will promote the combination of harmful substances in the body and increase the uric acid content in human blood, thus forming urinary calculi that are difficult to excrete. If there is something wrong with your metabolism, drinking beer while eating seafood can easily lead to a sharp increase in uric acid levels in your blood, which will lead to gout.
Gouty nephropathy, gouty arthritis and so on.
Ham and lactic acid drinks are easy to cause cancer. People who often eat sandwiches and yogurt for breakfast should be careful. Lactic acid drinks (including organic acids) such as ham and bacon in sandwiches are easy to cause cancer. Because, in order to preserve sausages, ham, bacon, bacon and so on. Food manufacturers will add nitrates to prevent food spoilage and the growth of Botox. When nitrate meets organic acids (lactic acid, citric acid, tartaric acid, malic acid, etc. ), it will be converted into a carcinogen-nitrosamine. Therefore, don't eat this kind of processed meat products often, so as not to increase the risk of cancer.
Radish and orange are easy to induce goiter. Radish will produce an antithyroid substance thiocyanic acid. If a large number of fruits such as oranges, apples and grapes are eaten at the same time, flavonoids in fruits will be converted into thiocyanic acid that inhibits thyroid function after bacterial decomposition in the intestine, thus inducing goiter.
Eggs and soybean milk reduce protein's absorption. Raw soybean milk contains trypsin inhibitor, which can inhibit the activity of human protease and affect the digestion and absorption of protein. The egg white of eggs contains viscous protein, which can combine with trypsin in soybean milk, so that the decomposition of protein is blocked, thus reducing the absorption rate of protein.
Milk and chocolate have diarrhea easily. Milk is rich in protein and calcium, while chocolate contains oxalic acid. When they are mixed together, calcium in milk will combine with oxalic acid in chocolate to form a kind of water-insoluble calcium oxalate, which will not be absorbed after eating, and will also cause symptoms such as diarrhea and dry hair, thus affecting people's growth and development.
Fruits and seafood are not easy to digest. When eating seafood, if you eat grapes, hawthorn, pomegranate, persimmon and other fruits, you will have symptoms such as vomiting, bloating and diarrhea. Because these fruits contain tannic acid, when tannic acid meets protein in aquatic products, it will precipitate and solidify to form indigestible substances. After eating seafood, people should eat this fruit more than 4 hours apart.
Spinach and tofu are prone to lithiasis. Tofu contains magnesium chloride and calcium sulfate, and spinach contains oxalic acid. When they meet, they can produce magnesium oxalate and calcium oxalate. These two kinds of white sediments can not only be absorbed by human body, but also affect the absorption of calcium by human body, which is prone to lithiasis.
But if you want to talk about it, you can also have sex knowledge, which is our childhood physiology class. Let's talk about it briefly. . That's right. These health tips are easy to find. . . Come to Baidu and see what you have prepared. . Hope to adopt! ! Thank you. Thank you for giving compulsory education to primary schools! ! Like ~ ~