Natural and fresh foods have relatively high nutritional value, and foods can destroy some nutrients during production and processing, and even produce some substances that are harmful to health. For example, coarse grains contain a large amount of cereal fiber that is beneficial to the health of the intestine, but after careful processing, the content is greatly reduced, and the function of protecting the intestinal tract is also almost lost. This is one of the important reasons for the high incidence of colorectal cancer in the past 10 years.
People use food as their food, and Chinese people especially eat. How to eat nutritiously and eat healthy? The 8 golden rules of a healthy diet hope to help your scientific diet.
A: meat and milk beans, staple food can not be less
There are less than 30% of the people who can eat enough of the five types of food every day. This is the result of the “China Internet Citizens' Nutrition Knowledge Survey†published by the China Health Education Center in early 2012.
The old ancestors had long ago "old enough" of the old training, eating is to eat a balanced diet. "Diversification of foods" is the basis of a healthy diet. The types of foods ingested each day should be as diverse as possible. This is mentioned in almost all countries' dietary guidelines. Because the nutrition in each food is limited, different foods can complement each other. The more types of foods eaten, the more comprehensive the nutrient intake.
"Food Category Five" includes cereals, animal foods (meat, poultry, fish, eggs, milk), beans and nuts, fruits and vegetables, and bacteria and algae, pure energy foods (oil, sugar, alcohol, etc.). Among them, as a staple food, the valley potato food should account for more than half of the daily energy sources.
Is it enough to eat nutrient tablets? Nutrition should first come from the daily diet. Synthetic nutrients can only be used as a supplement to the diet. Under normal circumstances, do not need to add every day. Food can also obtain phytochemicals that are beneficial for preventing chronic diseases such as cardiovascular disease and cancer. In addition, the intake of food starts the process of chewing, gastrointestinal motility, etc., which is of great benefit to the digestion and absorption system, and the nutrient tablets are delivered with water. How can we appreciate the delicious food?
Two: Dunton has vegetables, eat fruit every day
Satisfaction status: ★★☆
Do you have vegetables and eat fruit every day, and health will be "laid" on you. The World Cancer Research Foundation (WCRF) and the American Cancer Institute (AICR) have compiled and analyzed the results of research in various countries around the world, and believe that there is sufficient evidence that vegetables and fruits can reduce the risk of many cancers.
The results of the survey on the nutritional and health status of Chinese residents showed that the intake of vegetables was 275 g/day, which was lower than the recommended 300-500 g; while the fruit was 45 g/day, far lower than the recommended 200-400 g/day.
When choosing vegetables, everyone can be “leek†and more colorful than anyone else’s vegetable basket. Spinach, oiled wheat vegetables, carrots, purple cabbage, red leek ... dark vegetables should account for half. Of course, edible mushrooms (mushrooms, shiitake mushrooms, fungus) and sea vegetables (wakame, seaweed, sea cabbage) are indispensable. If you want to eat fruit, you have to pick seasonal, fresh, eat now and buy.
It's not enough to eat vegetables and fruits. Fruits and vegetables are all treasures, but their nutritional value is different. Vegetable and vegetable chemicals are abundant. Fruits are rich in organic acids and aromatic substances. They cannot replace each other.
Three: Salt spoon for cooking, do not ignore the hidden salt
In recent years, the word “excessive†in food has been used to describe the “unqualified†word in food, causing people's anxiety. However, nutrition experts have complained that it has been difficult for them to listen to the “salt exceeded†for more than ten years.
Internationally, the lower the intake of salt, the lower the level, while the "heavy taste" of our residents has not improved. According to data from the survey on nutritional status and health status of Chinese residents in 2002, the average daily salt consumption per person was 12 grams, which is twice the recommended amount. Ten years later, an unpublished nutrition survey data shows that the country’s salt consumption has still not seen a significant decline.
The dangers of “excessive levels of salt†are not as rampant as floods and beasts, but they cannot withstand the erosion of the body for years and months. The high-salt diet is one of the internationally recognized risk factors for hypertension and can induce cerebral thrombosis and myocardial infarction. Therefore, in the daily diet, salt, less, less, and less.
If it is impossible to control the salt spoon in your hand, you may wish to use salt-restricted spoons, based on the number of people, according to the amount of 5 grams per person (World Health Organization recommended amount), and take the amount of salt in the whole family for a day and limit the amount every day.
Salt control is to use less salt for cooking and less salt for cooking, but also pay attention to covert salt. Looking at the nutrition label on the package, labeling 400 milligrams of sodium is equivalent to 1 gram of salt. In addition, pay attention to "recessive salt" in soy sauce, pickles and various sauces.
Four: White water to drink enough, drink less touch
Not only does not drink enough water, but also prefers to drink beverages. This is the current status of drinking water in our country.
According to the "Chinese Dietary Guidelines" (2007 edition), healthy adults with mild levels of physical activity drink at least 1200 ml of water per day in a suitable climate. In 2011, the research team led by researcher Ma Guansheng made a survey of drinking water in four cities in Beijing, Shanghai, Chengdu and Guangzhou, showing that 30% of residents drink less than 1200 ml of water per day.
The survey also pointed out that although only 4.7% of people believe that the beverage is the healthiest, 80% of people still drink and the average daily consumption is 270 ml.
"The danger of overdrinking sugary drinks is well known. With high energy, it can lead to many health problems. But in reality there are not many people who greet the taste and drink," said Ma Guansheng, in fact, white water (such as boiled water, mineral water, and pure water). Water is the best drink in daily life, and white water is best for boiled water.
Drinking enough water every day is important to maintain the body's metabolism and various physiological functions. Insufficient drinking water causes physical and mental decline, which affects work and learning efficiency, and may even cause some diseases (such as hypertension, nephritis, kidney stones, etc.) .
When you were thirsty, you drank water, and when you drank it, the cows drank. In the above survey, it was found that nearly half of people mistakenly believe that “when they feel thirsty when drinking waterâ€. In fact, when the body feels thirsty, the body is already in a state of water shortage and begins to use the adjustment system to adjust the water balance. At this time, although drinking water can supplement the lost amount, it is not the best drinking time, and it is often easy to drink a large amount of water at one time. Increase the burden of the stomach, dilute the gastric juice and affect digestion. So, drinking water should be at any time of the day, a small number of times.
Five: eat less pork, fish is the first choice
Chinese people account for half of the world’s pork consumption. The China Meat Association had released data in 2007. In the consumption structure of meat for Chinese residents, pork has accounted for about 65% of the population in recent years, and it is in a leading position. The per capita pork consumption in China is almost the same from 16 years after 1990. Doubled.
Eating more meat, of course, is not good, especially if pork eats more. The number of patients with cardiovascular diseases in China has exceeded 270 million, which has become a major cause of death among residents. This is not unrelated to this.
The classic "Dietary-Heart Hypothesis" (pictured below) shows the dietary intake of saturated fat as well as the classic nutrient book "Nutrition Epidemiology" written by Dr. Walter Willley of the Harvard School of Public Health. The evolution between cholesterol and myocardial infarction, and most of the pork is the main cause of this evolution process - saturated fat and cholesterol.
At present, the common people have two problems in eating "meat": one is eating too much pork, and the other is eating too little fish and seafood. Fish's protein is easily digested and absorbed, but has a low fat content and is rich in unsaturated fatty acids that are beneficial to the cardiovascular system (especially tuna, mackerel, sardines and other deep-sea fish). They should increase their intake and eat 1 to 2 capsules per day.
High cholesterol, can not eat yolk and meat? In fact, cholesterol in the body is responsible for certain physiological functions, such as the composition of the cell membrane and nerve fibers, synthetic hormones, adrenal hormones, etc., so the need for scientific, adequate intake, no more than 300 per day In milligrams, hyperlipidemia does not exceed 200 mg per day (equivalent to cholesterol in an egg yolk). In addition, plant foods in the cereal sterols and dietary fiber can reduce the body's absorption of cholesterol, hyperlipidemia people can usually eat more food, eat less meat, do not have to refuse.
Six: eat eight full, eat two balance
Obesity is a public health problem in the world and can lead to many serious health consequences such as heart disease, stroke, type 2 diabetes and some cancers. During the 10 years from 1992 to 2002, the overweight and obesity rates of Chinese residents rose by 38.6% and 80.6% respectively, and it was estimated that overweight and obese people had increased by 100 million.
Fat people eat it one by one. They eat 10 points a day, or even 12 points. They eat a lot and move less. When they accumulate energy in the body over a long period of time, they will eat themselves as fat and eat it as "three highs."
Weight loss is indeed a problem. Women take weight loss as their cause. However, it is not difficult to lose weight without a method, but it is difficult to persist. Eating and moving are two aspects of maintaining healthy weight. Controlling food intake and increasing physical activity can prevent and control obesity. In terms of diet, eight-point full, especially dinner, if you can't do it, start by eating one or two less a day. To develop a good habit of exercise every day, especially fast-paced walking, jogging, swimming, cycling and other aerobic endurance exercises, can enhance heart and lung function, but also improve bone mineral density. However, it should be noted that it is useful to ensure that exercise time (more than 30 minutes per day) and long-term regular exercise.
When a child was a child, it was okay. Many studies have shown that childhood obesity is a serious problem. Obese children are more likely to suffer from hypertension, diabetes, dyslipidemia, fatty liver, and skeletal joints. The survey of nutritional status and health status of Chinese residents in 2002 found that the rate of hypertension among obese young people aged 15 to 18 years was 40.9%, and the abnormal rate of lipids among children and adolescents was 2.2%. It was estimated that there were 5.63 million school-age children aged 6-17 years with dyslipidemia. According to data from 2009, about 700,000 children have impaired fasting glucose tolerance and about 590,000 people with diabetes.
Seven: eat well for breakfast, three meals should be on time
Breakfast like the emperor, lunch like a poor meal, dinner like to eat. The reason is known, but many people are completely reversed. The breakfast is like a clam and the dinner is like an emperor.
According to a survey of urban children and juveniles conducted by the China Center for Disease Control and Prevention, 6.7% of children aged 3-16 in 1998 often skipped breakfast, and in 2008 the data showed that the proportion of primary and middle school students who skipped breakfast every day was about 7%. Ten years later, breakfast problems have not been resolved.
According to the survey conducted by the China Health Education Center on college students in more than 10 cities in 2011, the proportion of college students who eat breakfast every day is only 65%, and nearly 30% of students take a diet to lose weight.
There have been media reports that 35% of white-collar workers go hungry to work. Are you also a member of this team?
The nutritious breakfast includes four categories: staple food, meat and eggs, milk or beans, fruits and vegetables. If you eat only two or fewer types, you are under-nourished. Eating a bad breakfast is a stumbling block to your child's growth, affecting learning, cognitive ability, and physical fitness. For adults, not eating can also affect work efficiency and health.
Young people have a high incidence of stomach problems. Most of them are related to the three meals that are not eaten on time. The meal is full of hunger. This is why many mothers have the most children. According to the point of eating, the digestive system will form a regular pattern that adapts to dietary behaviors. The interval between meals is 4 to 6 hours, which is conducive to the digestion and absorption of nutrition and gastrointestinal health.
Do not eat breakfast to lose weight? Wrong, do not eat breakfast but will increase fat. A study in the American Journal of Preventive Medicine surveyed 93,000 participants and found that the risk of being overweight or obese at the lowest frequency of breakfast is 1.75 times that of those who eat breakfast almost daily. The same is true for children and teenagers. For breakfast, the higher the risk of overweight and obesity.
8. Food still wants to return to nature
Rule 8: Fresh food is good, buy less processed products
Natural and fresh foods have relatively high nutritional value, and foods can destroy some nutrients during production and processing, and even produce some substances that are harmful to health. For example, coarse grains contain a large amount of cereal fiber that is beneficial to the health of the intestine, but after careful processing, the content is greatly reduced, and the function of protecting the intestinal tract is also almost lost. This is one of the important reasons for the high incidence of colorectal cancer in the past 10 years.
Another example is fresh fish rich in unsaturated fatty acids, but the heating and oxidation process will destroy these healthy ingredients, and even produce harmful hydrogenated fatty acids. Frequently eaten, smoked and grilled meats are also risk factors for gastric cancer.
Nothing can replace natural fresh food. This can be understood from the dietary characteristics of the long-lived Guangxi Bama.
The nutritional value of imported fruits and vegetables is better. The price of food is not necessarily proportional to its nutritional value, but is related to its freshness. Imported varieties of fruits and vegetables are rare, but after passing the ocean, their freshness is greatly discounted, vitamins and other nutrients are lost; and the real-time, seasonal fresh fruits and vegetables, water, vitamins and minerals
Substantial content, high nutrition and relatively inexpensive prices. Therefore, it is the truth to choose the right ones that are not expensive.
We may have ever seen the PTZ Camera/ PTZ Camera Outdoor/ PTZ Webcam HD/ PTZ Camera Night Owl/ PTZ Network Camera/ Pan Tilt Zoom Outdoor Network Camera in our daily life, but can't recognize it or don't know its name. Today let me introduce the PTZ Camera for you. PTZ Camera refers to the camera with the PTZ, so what is the PTZ?
What is the PTZ?
PTZ, the abbreviation of Pan/ Tilt/ Zoom, is the supporting equipment for installing and fixing cameras. PTZ can be divided into two types: the Fixed PTZ and the Electric PTZ. The Fixed PTZ is suitable for the situations where the surveillance range is not large. After the camera is installed on the fixed pan/tilt, the horizontal and tilt angles of the camera can be adjusted. After reaching the best working posture, just lock the adjustment mechanism. Motorized PTZ is suitable for scanning and monitoring a large area, it can expand the surveillance range of the camera. The high-speed attitude of the electric pan/tilt is realized by two executive motors, and the motors receive signals from the controller to operate and position accurately. Under the action of the control signal, the camera on the PTZ can automatically scan the surveillance area, and can also track the surveillance object under the control of the staff on duty in the surveillance center.
The classification of the PTZ
According to the characteristics of the PTZ's rotation, the PTZ can be divided into the horizontal rotating PTZ that can only rotate left and right, and the all-round PTZ that can rotate not only left and right but also up and down. Generally speaking, the horizontal rotation angle is 0°~350°, and the vertical rotation angle is +90°. The horizontal rotation speed of the constant-speed PTZ is generally 3°~10°/s, and the vertical speed is about 4°/s. The horizontal rotation speed of the variable-speed PTZ is generally 0°~32°/s, and the vertical rotation speed is about 0°~16°/s. In some high-speed camera systems, the horizontal rotation speed of the PTZ is as high as 480°/s or more, and the vertical rotation speed is more than 120°/s.
In fact, the PTZ, composed of two AC/DC motors, is an installation platform, which can move horizontally and vertically. The PTZ applied to the monitoring system can be controlled the direction of rotation and movement remotely through the control system, which is different from the PTZ( just a tripod, which can only be adjusted by hand) in the photographic equipment.
In conclusion, I hope that the introduction about the PTZ can help you better understand the PTZ Camera.
In conclusion, I hope that the introduction about the PTZ can help you better understand the PTZ Camera.
PTZ Camera, PTZ Camera Outdoor, PTZ Webcam HD, PTZ Camera Night Owl, PTZ Network Camera, Pan Tilt Zoom Outdoor Network Camera
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