Science handwritten newspaper pictures

Scientific knowledge has made the world change very rapidly. It can be seen that science is indeed the primary productive force. Scientific knowledge also changes our quality of life and allows us to live and work more reasonably and healthily. Below are pictures of hand-written popular science newspapers compiled by us. Welcome to read them. For more related handwritten newspapers, please pay attention to this column. Pictures of popular science handwritten newspapers (1) Pictures of popular science handwritten newspapers (2) Pictures of popular science handwritten newspapers (3)

Life science knowledge

1. Eat less salt, world health The organization recommends that the appropriate daily salt intake is 6 grams, but the actual daily salt intake per capita in my country is more than 13 grams, which is more than 1 times higher than the standard amount.

2. What should you eat when you are worried? Vitamin C has the function of balancing psychological stress. When you are under strong psychological stress, your body will consume 8 times more vitamin C than usual, so you should eat as much vitamin C-rich foods as possible. Such as stir-fried cauliflower, cabbage, spinach, sesame seeds, fruits, etc. People who are under high work pressure will get unexpected results by taking vitamin C tablets.

What to eat when you are exhausted? You can eat peanuts, nuts, cashews, walnuts and other dried fruits. This kind of sweet snack has a magical effect on restoring physical energy. Because they are rich in protein, vitamin B and vitamin E, calcium, iron, and vegetable fats, but contain no cholesterol.

In addition, germ can also rejuvenate people. Clam soup, green pepper shreds, cold vegetables, sesame seeds, strawberries and other foods are rich in protein and moderate calories, which can protect and strengthen the liver. You might as well eat more. .

What does bad temper mean? If calcium is added to the food of delinquent teenagers, their aggressiveness and destructiveness can be changed. Calcium has a calming effect on mood, and milk, lactic acid, cheese and other dairy products, as well as dried fish, are extremely rich in calcium.

What should you eat when you are too drunk? 1. Eating more fish, meat, eggs, tofu, cheese and other high-protein foods can prevent drunkenness and has the effect of replenishing nutrients. In addition, beef jerky will form a protective membrane in the stomach wall, so drinking a glass before drinking can not only protect the stomach, but also reduce the degree of wine fermentation.

What to eat when working overtime continuously? The ideal late-night snack should be easy to digest.

Foods rich in vitamins and proteins that do not contain excessive calories. However, it should also depend on the situation. If you have a late-night snack after work, you should choose foods that are easy to digest and will not increase the burden on the stomach, such as vegetable porridge, egg drop soup, squid, etc.

Don’t fall asleep after eating a big bowl of noodles before going to bed.

What to eat for breakfast in a hurry? Skipping breakfast will inevitably lower blood sugar, make you unable to concentrate throughout the morning, make you drowsy, and work very poorly.

Therefore, if you want to sleep more and don’t have time to eat breakfast, you should at least drink some milk, eat a few biscuits and take multivitamins.

3. How to eat dinner well? Eat dinner early.

Eating dinner early is a good health strategy recommended by medical experts. Relevant studies have shown that eating breakfast early can greatly reduce the incidence of urinary tract stones. People's peak period of calcium excretion is often 4-5 hours after a meal. If dinner is too late, when the peak period of calcium excretion arrives, the person has already gone to bed and fallen asleep, and urine will remain in the ureters, bladder, urethra and other urinary tracts, and cannot be Excreted from the body in time, the calcium in the urine continues to increase, and it is easy to deposit and form small crystals. Over time, it gradually expands to form stones. Therefore, it is more appropriate to have dinner around 6 p.m.

Have a vegetarian dinner.

Dinner must be vegetarian, mainly foods rich in carbohydrates, and the less protein and fat, the better. But in real life, because most families have plenty of time to prepare dinner and eat a hearty meal, this is not good for health. According to relevant research reports, eating a large amount of meat, eggs, milk and other high-protein foods at dinner will increase the amount of calcium in the urine. The increased amount of calcium in the urine reduces the calcium storage in the body and induces urinary tract disease in children, myopia in adolescents and osteoporosis in middle-aged and elderly people. On the other hand, high calcium concentration in urine greatly increases the possibility of developing urinary tract stones. .

In addition, if you consume too much protein, the body will absorb too much and it will remain in the intestines, where it will deteriorate, produce ammonia, hydrogen sulfide and other toxins, which can stimulate the intestinal wall and induce cancer.

If you eat too much fat, your blood lipids can rise. Research data shows that people who often eat meat for dinner have 2-3 times higher blood lipids than vegetarians.

Carbohydrates can produce more serotonin in the human body and exert a calming and soothing effect, which is especially beneficial to those with insomnia.

Compared with breakfast and lunch, dinner should be eaten less. Eating too much at dinner can cause cholesterol to rise, stimulate the liver to produce more low-density and very low-density lipoproteins, and induce arteriosclerosis; long-term overeating at dinner can repeatedly stimulate a large amount of insulin secretion, often causing premature failure of insulin B cells. Thus burying the root cause of diabetes.

In addition, an overly full dinner can cause the stomach to bulge and cause pressure on surrounding organs. The intense work of the stomach, intestines, liver, gallbladder, pancreas and other organs after a meal will send messages to the brain, causing the brain to become active. And spread to other parts of the cerebral cortex, inducing insomnia.

4. Be careful, don’t eat yourself when you are old. In daily life, some people especially like to eat pickled meat, vegetables or pickled fish products. Some people, especially some men, like to eat pickled meat, vegetables or pickled fish products. Do you often indulge in hotels and keep company with alcohol? Don’t you know that these bad living habits will eat you up? 3. Alcohol and alcoholic beverages. Drinking a large amount or regularly in daily life can cause the liver to become inflamed and swollen due to alcohol poisoning, leading to sperm deformity, sexual function decline, impotence, etc. in men. Women who often drink alcohol or drinks containing alcoholic beverages will experience symptoms such as irregular menstruation, cessation of ovulation, and loss of sexual desire, making the body show signs of premature aging.

Mildy food Generally speaking, middle-aged women are mostly good housekeepers and are reluctant to throw away the rice, noodles, soybean oil, peanuts, frozen meat, etc. at home after they have gone bad. You may not know that when the above-mentioned moldy food becomes moldy, it will produce a large amount of bacteria and aflatoxin, and aflatoxin is a carcinogen. When people eat moldy food, it can cause diarrhea, vomiting, and dizziness in mild cases, or cause cancer, teratology, and premature aging in severe cases.

Pickled food Pickled food is a high-salt food. If people eat too much, it can easily induce cardiovascular and cerebrovascular diseases and cause the body to enter premature aging.

Scale In daily life, some people do not pay attention to cleaning tea sets or water sets, causing scale to accumulate in tea sets and water sets after long use. Scale contains many harmful metal elements such as mercury, arsenic, and aluminum. If these elements are excessively retained in the human body for a long time, they can damage human organs. Frequent use of scale-contained utensils to drink water can cause digestive, neurological, urinary, hematopoietic and other system diseases, thus causing aging.

Expired instant noodles, biscuits, fried food, cooking oil left after frying, dried fish and cured meat that have been exposed to the sun for a long time, biscuits, instant noodles, grease, etc. that have been stored for a long time, especially Foods that already have a hala flavor contain peroxylipids. Lipid peroxide is a peroxidation product of unsaturated fatty acids. Studies have found that after lipid peroxide enters the human body, it has a destructive effect on the acid system and vitamins in the body, promoting premature aging.

Although there are many causes of premature aging, the intake of substances that promote premature aging due to bad living habits is one of the important reasons that cannot be underestimated.

5. How to eat lighter, lighter, lighter? Nutritionists suggest that efforts should be made to change the dietary concept of "salty is fresh", and strive to ensure that a family of three uses no more salt every month. Over 500 grams.

It is best to have a bottle of milk every day. Milk is rich in nutrients and rich in calcium. Fresh milk (227 grams) contains about 250 mg of calcium.

An egg a day. Eggs are foods with excellent nutritional value among natural foods. Egg protein can provide extremely rich essential amino acids, and its composition ratio is very suitable for the needs of the human body. Most of the fat in eggs is in the yolk, and is dispersed into fine particles, which are easily absorbed.

At least one meal of fish should be on the table every week. Researchers have found that fish are rich in N-3 series unsaturated fatty acids. Among them, polydilute fatty acids such as DHA can take cholesterol away from blood vessels after combining with cholesterol in the blood.

Chicken and duck are used instead of pork.

Scientific analysis shows that every 100 grams of chicken contains 16.6 grams of protein and 14.1 grams of fat, while every 100 grams of pork contains only 1.6 grams of protein and 89.5 grams of fat. Fat is one of the nutrients necessary for human life activities, but excessive intake is also detrimental to human health.

Increase your intake of soy products. Soybeans are rich in nutrients and can be called a flower among nutritious foods. It is particularly worth mentioning that the protein content in soybeans is 2-3 times that of pork, 5.2 times that of eggs, and 12 times that of milk. According to research by Japanese scholars, the protein inhibitors of soybeans can prevent gastric cancer.

It is best to eat 500 grams of vegetables per person per day. Some people think that vegetables are low-end foods, 5 but they are not.

Take garlic as an example. It has inhibitory or killing effects on a variety of bacteria. It also has anti-cancer, lipid-lowering, detoxification, hemostasis and other functions, so it can be both edible and medicinal.

Incorporate mushroom foods into the dietary structure. Mushroom foods such as shiitake mushrooms, shiitake mushrooms, black fungus, and black fungus are not only delicious, but also contain higher protein than ordinary vegetables. They have a suitable proportion of essential amino acids and a variety of trace elements. They are a type of nutritional food worth recommending.

Shiitake mushrooms contain 18 kinds of amino acids and more than 30 enzymes, as well as vitamin B1 and vitamins A and D, which can improve the body's ability to inhibit malignant tumors. In addition, shiitake mushrooms also contain shiitake mushroom cell fluid and lentinan, which not only have good anti-tumor effects, but can also induce the production of interferons in the human body, thereby improving the body's immunity and playing an antiviral effect. In addition, the nucleic acid substances in shiitake mushrooms can inhibit cholesterol in serum and liver, prevent and treat hyperlipidemia, and thereby prevent and treat coronary heart disease. Mushrooms have similar effects to shiitake mushrooms, and long-term consumption can play a good health role. Black fungus is also a kind of mushroom and is known as the "meat among vegetables". It is a good health food. Long-term consumption of black fungus can prevent coronary heart disease and atherosclerosis.

Eat enough to eat. Foreign medical experts believe that the traditional Chinese diet is the best dietary structure to prevent atherosclerosis. Domestic nutritionists have also called for many times to maintain the basic characteristics of our country's diet, which is mainly plant-based food, supplemented by animal-based food, and the main energy source is grain. Eat enough to avoid poor dietary protein quantity and quality. And other disadvantages.

6. The dietary structure must be reasonable. What exactly is a balanced diet, and how to achieve this standard? The so-called balanced diet means that the nutrients contained in the diet are complete in variety, sufficient in quantity, and in appropriate proportions, that is:

Amino acid balance, caloric nutrient balance, acid-base balance and various nutrient intakes 6 must also be balanced. Only in this way can the absorption and utilization of nutrients be facilitated.

As we all know, people divide necessary foods into five categories in daily life. The first category is grain, which is the main source of calories. Generally, the daily intake of light manual workers is 300-500 grams, and the rest of the calories are supplied by non-staple foods. Therefore, grain foods account for 60%-70% of the caloric energy supply, accounting for about 32% of the total diet. %.

The second category is food rich in animal protein, including lean meat, eggs, poultry, fish, etc. Adults should consume 70-100 grams of protein every day. According to research, the human body’s absorption rate of animal protein is higher than that of plant protein. The ideal protein intake should be 1/4 animal protein, 1/4 soy protein, and the remaining 2/4 provided by grain. Therefore, nutrition experts recommend that each person should consume 50-100 grams of poultry and livestock meat, 50 grams of fish and shrimp, and 25-50 grams of eggs per day. Such foods should make up 13% of the total diet.

The third category is beans, milk and products. Because beans are rich in protein, unsaturated fatty acids, lecithin, etc., the composition of their protein amino acids is close to the needs of the human body, so each person should supplement 50% of beans every day. Gram, 100 grams of milk, this type of food accounts for 9.5% of the total.

The fourth category is vegetables and fruits, which are the main sources of vitamins, inorganic salts and dietary fiber for the human body. However, because there are many varieties of vegetables, the nutritional content also varies greatly.

For example, green leafy vegetables contain a large amount of carotene, ascorbic acid, calcium, phosphorus and other inorganic salts; root vegetables are rich in starch, protein and carotene; fresh legumes and vegetables contain carbohydrates, iron Thiamine and thiamine are incomparable to other vegetables, so each person should consume 400-500 grams per day, and the amount of green leafy vegetables should be kept at more than 1/2. Fresh fruits are a good source of ascorbic acid and can provide a large amount of protein, phosphorus, iron and other inorganic salts. Therefore, each person should consume 100-200 grams of fresh fruits every day. Such foods 7 should account for 40% of the total.

The fifth category is oils and fats, which can provide calories, promote the absorption of fat-soluble vitamins, and supply unsaturated fatty acids.

Vegetable oils contain higher amounts of essential fatty acids than animal oils. Animal oils have more saturated fatty acids and a higher melting point, so they are not easily digested and absorbed by the human body. Therefore, you should eat less animal fats and more vegetable oils. Therefore, nutritionists recommend that the intake ratio of fats and oils is 1/3 each of saturated fatty acids, polyunsaturated fatty acids, and monoethylenically unsaturated fatty acids. Fats should be consumed at 1 gram per kilogram of body weight per day, accounting for approximately 1.5% of the total diet.

In summary, long-term lack of any of the above five types of food will affect physical health. In order to maintain a balanced diet, people should not eat too much every day, let alone overeating during festivals. , truly match the thickness and thickness, and have both meat and vegetables, your health will be more secure.

7. Life misunderstandings. Many people who like new tea think that new tea leaves are fresh in color, fragrant and refreshing, and that drinking more is good for the body. In fact, they are wrong. New tea leaves that have been stored for less than one month have not been oxidized. There are many polyphthalates, aldehydes and alcohols. Drinking too much will irritate the gastrointestinal tract, cause symptoms such as abdominal distension and abdominal pain, and aggravate the condition of patients with chronic gastritis.

Don’t eat sauerkraut. There has been a rumor that cancer is related to sauerkraut, so people are afraid of eating sauerkraut. In fact, the sourness of sauerkraut is the result of lactic acid bacteria decomposing sugars in cabbage to produce lactic acid crystals. Lactic acid is an organic acid and is not a carcinogen. After being absorbed by the human body, it can increase appetite and promote digestion. At the same time, cabbage becomes sour and the nutrients contained in it are not easily lost, so eating sauerkraut is beneficial to people. 8. Drink milk on an empty stomach. Many people drink milk early in the morning, thinking that this can absorb all the nutrients. In fact, if you drink milk on an empty stomach, it will be quickly discharged into the large intestine through the stomach and small intestine. As a result, various nutrients will be excreted from the body before they can be digested and absorbed.

To drink milk correctly, you should eat some food first and then drink milk.

Boiling milk for a long time Some people are afraid that the bacteria in the milk will not die and they will be boiled for a long time.

In fact, when milk encounters high temperatures, not only will its flavor decrease, but its protein will also be denatured and a lot of vitamins will be lost. Therefore, boiling milk is limited to boiling.

Exposing rice to the sun. After rice becomes infested with worms, some people expose it to the sun, thinking that this will kill or drive away the rice worms. In fact, not only does the sun not kill the rice bugs, but the rice that has been exposed to the sun will still get bugs, and they will reproduce faster.

Exercise on an empty stomach. Many people are used to running on an empty stomach in the morning, thinking that this can absorb fresh air and prevent obesity. However, the energy source of fasting exercise mainly relies on the proliferation of fat. At this time, the free fatty acids in the blood will increase. Fatty acids not only become the energy source for myocardial and other activities, but excessive amounts can also become myocardial poisons, which can cause various arrhythmias and even lead to sudden death. Older people are at greater risk. According to reports, several joggers in the world are short-lived. Therefore, it is necessary to eat something appropriate before running in the morning.

Spinach replenishes blood. Many people think that spinach contains a lot of iron, and often tell their children to eat spinach to replenish blood. Some adults with anemia also regard spinach as a good blood supplement and eat it regularly. In fact, spinach does not have the highest iron content, nor can it replenish blood. Because only 1% of the iron in spinach is absorbed in the intestines, and 90% is combined with oxalic acid, which is not only difficult to absorb, but also affects the body's absorption and utilization of iron. 9. Fasting from fat meat. People are afraid that fat meat will induce high blood pressure, coronary heart disease, hyperlipidemia, and arteriosclerosis, so they avoid it. In fact, fat meat is not only a traditional delicious food, but also a nutritional element that promotes growth and development and can also prevent cancer. As long as it is cooked properly, stewed over a slow fire, and eat some fatty meat appropriately, it is good for human health.

Vegetable oil is good. People think that eating animal oil can easily cause coronary heart disease, obesity and other diseases, so they favor vegetable oil. In fact, this is very one-sided. Because eating vegetable oil alone can increase peroxides in the body, affect vitamin absorption, and increase the incidence of breast cancer and colon cancer; peroxides formed on blood vessel walls, liver, and brain cells can cause arteriosclerosis, liver cirrhosis, and cerebral thrombosis. and other diseases.

The correct way is to mix or alternate vegetable oil and animal oil, and the ratio is 10:7.

Eating milk and chocolate together. Some parents give milk and chocolate to their children at the same time in order to increase nutrition for their children. In fact, this will be counterproductive. Because milk is rich in protein and calcium, chocolate contains a large amount of oxalic acid. When eaten together, the calcium in milk and the oxalic acid in chocolate combine to form calcium oxalate, which is not easily absorbed and can cause diarrhea and affect development.