As the saying goes, "the south is sweet, the north is salty." Excessive salt consumption among northerners is a matter that cannot be ignored. An excessive intake of salt can easily lead to common diseases such as hypertension. So, how can one consume salt scientifically?
Salt is an essential condiment in the human diet, and the main component it contains, sodium ions, is a necessary element for the body's metabolic processes. Medicine has confirmed that a daily salt intake of more than 6-7 grams can lead to the development of hypertension. Therefore, in our daily lives, when we buy edible salt, we should pay attention to the product's name, origin, production date, ingredients, shelf life, and usage instructions. We should choose fine edible salt produced by regular manufacturers, because fine salt is refined using advanced salt-making processes, including dissolution, brine clarification, evaporation, and drying. This reduces the content of chemical substances harmful to human health, such as magnesium, tungsten, and sulfate ions, and also reduces impurities like sand and mud. It is characterized by a high sodium chloride content, being white, dry, hygienic, and not easily dissolving even after long storage.
Currently, there are many types of health salts on the market, with low-sodium, high-potassium, selenium-enriched, and iodized health salts being relatively good choices. Potassium helps maintain the body's water balance, osmotic pressure, and acid-base balance, and counteracts the blood pressure-raising and blood vessel-damaging effects of table salt, which can help prevent the onset of stroke. Selenium has a significant resistance to the toxicity of metals like cadmium, mercury, and arsenic. In cardiovascular diseases, it can prevent high blood pressure and thrombosis, and has a certain protective effect on the heart. Iodine exerts its biological effects by forming thyroid hormone, influencing growth and development, maintaining the structure of the central nervous system, and preserving important functions such as a normal mental state and metabolism. A deficiency in iodine can cause decreased thyroid function and enlargement, a lower basal metabolic rate and vitality, and lead to endemic goiter. Excessive iodine can also cause goiter and symptoms of toxic reactions.
The World Health Organization stipulates that the daily sodium salt intake for adults should not exceed 6 grams, but salt intake is often determined by taste, flavor, and dietary habits. China's salt intake has already exceeded the normal physiological need by 10 to 25 times. A normal person would experience acute poisoning and develop edema from a daily intake of 35-40 grams of salt. In daily life, one should develop good eating habits, eat a lighter diet, avoid or eat less salt-preserved foods, change cooking methods, reduce the consumption of foods seasoned with salt, and keep the salt intake below 6 grams per day. If possible, one can choose low-sodium, high-potassium, selenium-enriched, or iodized health salt. Persisting in this for a long time can be beneficial to health.