It is best to give babies and children boiled tap water. Mineral water with high mineral content can threaten the health of infants! It starts with the principle of water absorption. In junior high school physics class, we learned that water can migrate from low to high concentrations through the principle of osmosis. When drinking water, the concentration of body fluids is higher than drinking water, forming a potential energy difference, water can pass through the cell membrane, naturally absorbed by the cells. But when the water contains more minerals, the concentration of water is higher, this potential energy difference decreases or even reverses, which brings trouble to the absorption of water. The physiological structure of infants and adults have a large difference, the digestive system is not yet fully developed, poor filtration function, mineral water with too high a mineral content is a big problem for infants. When babies use mineral water to brew food or drink it directly, it tends to cause an increase in the osmotic pressure of the food and increase the burden on the kidneys. Some parents may ask, “Is it better if I give my baby pure water? The answer is still “no”! After the secondary processing of pure water is also not suitable for the digestive system of newborns. As mentioned earlier, the concentration difference between inside and outside the cell is the driving force behind the formation of water absorption through osmosis, the mineral content of pure water is too low, resulting in a large difference between the two, will also cause absorption disorders. In addition, long-term consumption of pure water, but also make children lack of certain minerals, and pure water used in the purification process of some industrial raw materials, may have adverse effects on the liver function of infants and children. What kind of water is most suitable for children? According to research, tap water boiled and then cooled to room temperature, the most beneficial to health. After boiling the water, which contains the gas reduced by half, the cohesion between the water molecules increased, then the properties of water in the human cell is closest, so it is easy to pass through the cell membrane and absorbed by the body. It is worth noting that it is not advisable to boil water in aluminum pots, otherwise excessive intake of aluminum ions will affect the baby’s bone and nerve development; water fountains are prone to secondary pollution, and should not be used.