Excessive intake of salt can induce high blood pressure and increase the risk of heart disease and cerebral infarction, which can cause physical harm. Excessive salt levels are already a potential enemy of health threats.
The Suzhou City CDC provided a set of data. The prevalence of hypertension in Suzhou has increased by 40% in 10 years. More than 30% of people aged over 20 are suffering from hypertension. Among the city’s stroke and coronary heart disease patients last year, Half of it is due to blood pressure problems.
At present, the prevalence of hypertension in people over the age of 15 has reached 24%. In the 10 years since the 21st century, the prevalence rate of hypertension in Suzhou has increased by 39.63%. The current prevalence of hypertension in people over the age of 20 exceeds 30%, and that of citizens over 35 years old exceeds 40%. The number of patients has exceeded 1.7 million. The city's chronic disease surveillance related information shows that in 2012, there were 23,235 cases of stroke in the city, among which the number of people who suffered from blood pressure problems was close to 13,000 people; in the other year, 8938 cases of coronary heart disease occurred in the city, of which nearly 4,000 were due to blood pressure problems.
Hypertension occurs for a variety of reasons. Apart from some genetic problems, most people are related to lifestyle, such as diet, exercise, and stress. A number of studies at home and abroad have proven that high-salt diet is an important factor leading to elevated blood pressure, and this effect becomes more pronounced with age. Should be alert to all kinds of snacks, spices, on the table "invisible salt."
What kind of food will contain invisible salt?
1) Seasonings, including soy sauce, vinegar, monosodium glutamate, chicken essence, oyster sauce, bean paste, chili sauce, leek, fermented bean curd and so on all contain salt. For example, soy sauce, equivalent to 1 gram of salt per 5 milliliters of soy sauce, so put these seasonings when cooking more to reduce the amount of salt.
2) Desserts are also relatively easy to ignore because some people think that salt-free food does not contain salt, and foods that are sweet or light in taste are not linked to high salt. Such as bread, biscuits, cakes, snacks, ice cream, cheese and so on. On the one hand, the production process of these foods requires the addition of sodium-containing excipients, such as baking powder (sodium bicarbonate), and on the other hand, the seasoning of the salt is required for better taste. Breakfast Many people like to eat bread. There is data saying that three or four slices of bread with high sodium content account for almost a quarter of the daily intake of 6g of salt.
3) Speed ​​food, fast food. Such as instant noodles, pizza, burgers, fritters, noodles, breakfast cereals, tofu silk, vegetarian chicken, steamed buns and so on. The baking soda used is baking soda. In which a pack of instant noodles is eaten, the amount of salt in it is equivalent to the total amount of salt in one day. A pack of 375 grams of milk biscuits is not salty but contains 1500 mg of sodium (equivalent to 3.75 grams of salt).
4) Processed meat products. Ham, sausage, bacon, pheasant, luncheon meat, egg, and floss. 4-6 pieces of luncheon meat contains more than 750 mg of sodium.
5) Many snacks, such as squid, beef jerky, seaweed, potato chips, and melon seeds. There are also candied fruit and drinks. Because there are many snack additives, many additives contain sodium. (Adjust sour sodium citrate, antiseptic sodium benzoate, etc.).
6) Even natural foods contain sodium, including meat, fish, shrimp and other aquatic products; many vegetables, such as spinach, bean sprouts, seaweed, also contain natural salts.
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What problems should we pay attention to when using solar energy for power supply?
1. The whole day sunshine time of monitoring points along the expressway shall be considered first. As the main energy of the power supply system comes from sunlight, the sunshine exposure time must be considered, which is particularly prominent in mountainous areas where there is little sunshine, but not in plain areas.
2. Working power, working voltage and current of monitoring facilities along the expressway. After considering the power of the whole load, we can choose the solar panel that is more suitable for the long-term operation of the equipment.
3. If the battery discharge cannot make the monitoring equipment work for a long time, the monitoring system will be paralyzed in the rainy season, but the expressway is prone to accidents in the rainy season.
4. The conversion rate of solar cells is low. At present, the conversion rate of solar cell power supply is only about 20%, that is to say, if the silicon solar cell is spread over a square meter, 100~200W of power can be obtained, which is obviously not enough to meet the long-term operation of the monitoring equipment. Of course, with the development of technology and the improvement of the quality of crystalline silicon cells, we can obtain more power resources in a smaller area in the near future.
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