Studies have shown that the incidence of hypertension is about15g of salt per day, and a high-salt diet is an important risk factor for hypertension. Because too many sodium ions in salt are absorbed into the blood, water and sodium are stored in the body, which leads to the increase of blood volume and hypertension. At the same time, it also causes edema of vascular smooth muscle cells, narrowing of vascular lumen and aggravation of hypertension.
High-salt diet can easily induce atherosclerosis.
Eating more salt will obviously increase cholesterol in plasma, and long-term cholesterol risk factors will stimulate the inner wall of blood vessels and induce the formation of atherosclerosis.
High-salt diet is easy to cause gastric cancer.
After excessive intake of high-salt food, the osmotic pressure of salt is high, which causes direct damage to gastric mucosa. High-salt food can also reduce gastric acid secretion, inhibit the synthesis of prostaglandin E2, a protective factor of gastric mucosa, and easily produce gastritis or gastric ulcer. At the same time, high-salt food contains nitrate, which forms carcinogenic substance ammonium nitrite in the stomach.
High-salt diet accelerates the loss of bone calcium and leads to osteoporosis.
There are too many sodium salts in diet, and too many sodium ions compete with calcium ions when renal tubules are reabsorbed, which increases the excretion of calcium and leads to the decrease of calcium utilization rate in human body. At the same time, sodium salt stimulates parathyroid gland and increases calcitonin secretion, leading to hypocalcemia and osteoporosis.
The Dietary Guide for China Residents recommends that a person's daily salt intake should be less than 6 grams, of which 2 grams of salt is the amount of salt contained in the food people eat every day, and the amount of salt actually used for cooking every day should be 4 grams. The amount of salt consumed in one day is equivalent to the amount of smoothing an ordinary beer bottle cap.
Pay attention to the invisible salt you eat.
In addition to controlling the salt we eat in cooking and cooking, we should also pay attention to the salt hidden in many packaged foods, cooked meat, sausages, canned foods and so on in our daily life. Very tall and common snacks, such as melon seeds, plum blossoms and potato chips. It also contains salt that you can't see. Many of these foods don't feel salty at all.