In the human demand for food seasoning, salt can be said to be the first of all flavors. But most modern people know that the World Health Organization's health advice is that the daily salt intake of each person should not exceed 5 grams. The recommendation of China Nutrition Society is that the salt intake of healthy people should not exceed 10g a day.
According to the survey of the World Health Organization, as of 20 18, the salt intake of global13 population exceeded the standard. According to our country's investigation, the salt intake of people in northern areas is per capita15 ~16g/day, and even exceeds 20g/day in many places. Southerners have a slightly heavier taste, but the per capita salt intake also reaches 12g/ day, which obviously exceeds the recommended amount of the World Health Organization.
Extended data:
Life activities based on salt are embodied in many aspects.
1. The osmotic pressure of extracellular fluid is maintained by sodium ions in salt, thus regulating the human body's demand for water.
If the extracellular fluid contains too much salt, the osmotic pressure of the extracellular fluid will increase, and the water in the cell will be sucked out, which will stimulate the nerves and make people feel thirsty. Drink water to replenish water. On the contrary, it is necessary to excrete excess water through sweating and urination to maintain the osmotic pressure balance of extracellular fluid.
2. Sodium ion in salt, as a neurotransmitter and other neurotransmitters, can maintain and promote the excitement of nerves and muscles, which is embodied in what the folks call "no salt, no strength".
The conduction process of nervous system is a process of biochemical reaction and bioelectric current. Simply put, sodium ions and potassium ions can improve the excitability of nerves and muscles, while calcium ions and magnesium ions can reduce the excitability of nerves and muscles.
People's Health Network-How much salt intake is appropriate is controversial.