The method of reducing salt intake to supplement calcium was first proposed by British scientists. In their research, they discovered: the more salt is consumed, the more calcium is excreted in the urine, and the poorer the absorption of calcium. This means that eating less salt is equivalent to supplementing calcium. Reducing salt intake has a "supplemental effect without direct supplementation" on calcium, making it the most economical and practical way to supplement calcium.
The World Health Organization recommends that the daily salt intake for healthy adults should not exceed 5 grams. Nutritionists offer some tips for limiting salt: start with a beer bottle cap of salt per day (no more than 10 grams), and once accustomed, switch to a toothpaste cap of salt per day, which is about 4.5 grams. Add salt after the dish is cooked. This way, the salt will not penetrate the food but will be evenly distributed on the surface, which can reduce salt intake.