The best calcium supplement for middle-aged and elderly people: fresh milk

　　Fresh milk is healthy of milk

　　Because a few enzymes in milk can decompose the nutrients in the milk, resulting in bad smell and taste, affecting the quality of the milk. Therefore, for safety and nutritional reasons, squeezed milk must be processed. Processed milk can be divided into two types: one is fresh milk, and the other is room temperature milk. Fresh milk uses the current advanced pasteurization method to sterilize the milk. It removes harmful bacteria in the milk while retaining some beneficial bacteria, and maintains the freshness of the milk to the greatest extent and keeps the nutritional value of the milk from being lost. ； Room-temperature milk uses ultra-high temperature sterilization to kill all bacteria in the milk that may cause spoilage in an instant. It will also cause a certain loss of nutritional value, but the shelf life is relatively long. In comparison, fresh milk is more nutritious.

　　Isolate light to keep milk fresh

　　Since light penetrating from the outside can change the flavor of milk and destroy the nutrients of milk, proper packaging is also crucial in protecting the quality of fresh milk.

　　The more common milk containers on the market include fresh house cartons, plastic bottles and glass bottles. When choosing milk, many customers only care about the convenience and aesthetics of the container, but do not consider the practical aspects of choosing the right packaging. According to research, glass bottles can only isolate 9% of light, and translucent plastic containers can only isolate up to 30% of light. Fresh house paper boxes can basically isolate 96% of light, ensuring that the nutrients in milk are not destroyed and the quality of fresh milk is guaranteed. Moreover, fresh house milk in cartons is cheap, easy to carry, and more environmentally friendly, making it the best milk container.

　　Milk is rich in many nutritional values

　　Milk contains almost every nutrient needed by humans. It is rich in protein, has 8 kinds of essential amino acids for the human body, and also contains vitamins A, B, calcium, phosphorus, potassium, carbohydrates, linoleic acid and other ingredients. The various immunoglobulins contained in milk can enhance the body's disease resistance. The lactose in carbohydrates can also regulate gastric acid, promote gastrointestinal motility and digestive gland secretion, and can inhibit the growth of putrefactive bacteria.