Ten taboos
Milk with chocolate
Some people think that since milk is a high-protein food and chocolate is an energy food, it must be of great benefit to eat both at the same time. That was not the case. Adding chocolate to liquid milk will make calcium in milk react with oxalic acid in chocolate to produce "calcium oxalate". As a result, calcium, which was originally nutritious, has become a substance harmful to human body, which leads to calcium deficiency, diarrhea, delayed development of children, dry hair, easy fracture and increased incidence of urinary calculi.
The thicker the milk, the better.
Some people think that the thicker the milk, the more nutrients the body gets, which is unscientific. The so-called over-concentrated milk refers to adding more milk powder and less water to milk, so that the concentration of milk exceeds the normal proportion standard. Some people are afraid that fresh milk is too weak, so they add milk powder to it.
If infants often eat thick milk, it will cause diarrhea, constipation, loss of appetite, and even refusal to eat, and it will also cause acute hemorrhagic enteritis. This is because the organs of infants and young children are delicate and cannot bear the heavy burden and pressure.
The more sugar, the better.
Milk without sugar is not easy to digest, which is the "knowledge" of many people. Sugar is added to increase the calories supplied by carbohydrates, but it must be quantified, usually 5-8 grams of sugar per 100 ml of milk. What sugar should I add to the milk? Preferably sucrose. Sucrose enters the digestive tract and is decomposed by digestive juice, which becomes glucose and is absorbed by the human body. Glucose is low in sweetness, and it is easy to exceed the prescribed range when used too much.
There is also a question of when to add sugar. Sugar and milk are heated together, so that lysine in milk will react with sugar at high temperature (80℃- 100℃) to generate harmful substance glycosyl lysine. This substance will not only be absorbed by human body, but also be harmful to health. Therefore, the boiled milk should be dried until it is warm (40℃-50℃), and then sugar should be dissolved in the milk.
Feed the baby with yogurt
Yogurt is a healthy drink that helps digestion. Some parents often feed their babies with yogurt. However, antibiotics produced by lactic acid bacteria in yogurt can inhibit the growth of many pathogenic bacteria, but at the same time, it also destroys the growth conditions of normal flora beneficial to human body and affects the normal digestive function, especially for infants and premature infants suffering from gastroenteritis. If they are fed yogurt, they may cause vomiting and gangrenous enteritis.
Milk must be boiled
Usually, the temperature requirement of milk disinfection is not high, and it takes 3 minutes at 70℃ and 6 minutes at 60℃. If it is boiled and the temperature reaches 100℃, the lactose in milk will be coked, while caramel can induce cancer. Secondly, after boiling, calcium in milk will precipitate with phosphoric acid, thus reducing the nutritional value of milk.
Take medicine with milk and kill two birds with one stone.
Some people think that it is definitely good to take medicine with nutritious things, but this is extremely wrong. Milk can obviously affect the absorption rate of drugs in human body, so that the concentration of drugs in blood is obviously lower than that of non-milk users in the same time. Taking medicine with milk is also easy to make the drug show a covering film, so that mineral ions such as calcium and magnesium in milk react with the drug to generate water-insoluble substances, which not only reduces the efficacy, but also may cause harm to the body. Therefore, it is best not to drink milk for 1-2 hours before and after taking the medicine.
Add orange juice or lemon juice to milk to add flavor.
It seems a good idea to add orange juice or lemon juice to milk, but in fact, orange juice and lemon are fruits with high fruit acid. When fruit acid meets protein in milk, protein will be denatured, thus reducing the nutritional value of protein.
Add rice soup and porridge to milk.
Some people think that this can make the nutrition complementary. In fact, this practice is very unscientific. Milk contains vitamin A, while rice soup and porridge are mainly starch, which contains lipoxygenase, which will destroy vitamin A. Children, especially infants and young children, if they don't get enough vitamin A, they will be stunted and sickly. Therefore, even to supplement nutrition, the two should be eaten separately.
Bottled milk placed in the sun can increase vitamin D.
Someone learned from the advertisement that vitamin D should be supplemented to supplement calcium, and more sunshine is a good way to get vitamin D, so they put the bottled milk in the sun according to the prescription. In fact, this is not worth the loss. Milk may get some vitamin D, but it loses vitamin B 1, vitamin B2 and vitamin C. Because these three nutrients will decompose in the sun, so that some or all of them are lost; Moreover, lactose will ferment in the sun, which will make milk go bad.
Replace milk with condensed milk.
Condensed milk is a kind of milk product, which is made by evaporating fresh milk to 2/5 of its original capacity, then adding 40% sucrose and canning. Some people are influenced by "everything that is concentrated is the essence", so condensed milk is used instead of milk. This is obviously wrong. Condensed milk is too sweet and must be diluted with 5-8 times of water. But when the sweetness meets the requirements, the concentration of protein and fat is often reduced by half compared with fresh milk. If water is added to condensed milk to make the concentration of protein and fat close to that of fresh milk, the sugar content will be higher.
Some people should not drink milk, such as patients with digestive tract ulcer. Although milk can alleviate the stimulation of gastric acid on ulcer surface, it can stimulate gastrointestinal mucosa to secrete a lot of gastric acid, which will aggravate the condition.
Patients with iron deficiency anemia should not drink milk.
Iron in food needs to be converted into ferrous in the digestive tract before it can be absorbed and utilized. If you drink milk, ferrous iron in your body will combine with calcium salt and phosphorus salt of milk to form insoluble compounds, which will affect the absorption and utilization of iron.
Although milk has high nutritional value, only by drinking milk correctly can the nutrition be absorbed. On the contrary, it will not only fail to play its due role, but also hurt the body. Therefore, be sure to remember the top ten taboos of drinking milk!