Overnight dishes can cause cancer, and drinking yogurt after meals can promote digestion... These six dietary misconceptions have pitted too many people

"Drink eight glasses of water every day", "Overnight dishes can cause cancer", "soybean milk and eggs can't be eaten together".

"Drink eight glasses of water every day", "Overnight dishes can cause cancer", "soybean milk and eggs can't be eaten together"... These "health care" articles must often appear in your family group and friends circle, making many people believe it.

However, in fact, these so-called "health maxims" are all full of one-sided lies. Today, the editor will take you to dispel rumors, overcome misconceptions, and scientifically maintain health!

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One day after finishing his meal, Uncle Li drank 4 cups of water intermittently in the afternoon, with a total volume of approximately 1000ml. Not long after, he suddenly felt uncomfortable: palpitated, chest tightness, inability to breathe, sweating all over... His family rushed him to the hospital, and after examination, it was found that there was a large amount of water in his chest, diagnosed as acute pulmonary edema.

Why did you suffer from pulmonary edema after only drinking 4 cups of water? It turns out that Uncle Li himself suffers from chronic heart failure, and his water metabolism is relatively slow. Although it's only 4 cups, it also exceeds the heart load.

Usually, when it comes to how much water to drink every day, the answer is usually: eight cups. Indeed, the human body needs to consume around 2500ml of water every day, but in fact, in addition to normal drinking water, food is also an important source of water.

If you are in good health, you can consume around 1000-1500ml of water that day, which is 4-6 cups (250ml/cup), without the need to deliberately drink 8 cups.

Like Uncle Li, who suffers from heart diseases such as heart failure and myocardial atrophy, it is even more necessary to control the amount of water consumed. Patients with renal insufficiency and chronic liver disease also have relatively poor metabolic capacity in the body, and should not drink too much water.

In addition, the amount of drinking water should be adjusted according to climate, exercise intensity, and other factors, and should not be blindly limited to "X cups". If you want to know if you have enough water to drink, you can pay attention to your urine when using the restroom: if your urine is light yellow, clear, and well measured, it indicates that your body is not lacking in water; On the contrary, if the urine color is dark and the amount is small, it is necessary to replenish water in a timely manner.

Collagen determines the elasticity and firmness of the skin, and sufficient collagen can make the skin plump and youthful. Pig trotters, pig skin, chicken feet, and other foods all contain collagen, making them the preferred "beauty food" for many people.

In fact, the collagen in pig hooves only exists in the epidermal layer, and the amount is actually very small. Moreover, the collagen in food is mostly macromolecular protein, and the human body's absorption and utilization rate is less than 5%. That is to say, it is not reliable to supplement collagen by eating foods such as pig trotters.

Moreover, pig trotters also contain a lot of fat and cholesterol, which may not achieve cosmetic effects after consuming in large quantities. On the contrary, people gain a lot of weight, and the risk of high blood lipids will also be greatly increased.

In fact, as long as we consume enough high-quality protein (such as fish and shrimp, lean meat, egg milk, soybeans) and vitamin C (fresh vegetables and fruits), have a balanced diet, maintain regular sleep patterns, and exercise regularly, we can promote the spontaneous synthesis of collagen in the body.

Note: Some people find that their skin condition has indeed improved after eating pig trotters, which is actually due to the effect of fat.

Yogurt contains certain probiotics, which help maintain the balance of the gut microbiota, promote the absorption of nutrients such as calcium and magnesium, and indeed have a certain improvement effect on digestive function.

However, drinking yogurt immediately after meals is equivalent to increasing the workload and burden of the gastrointestinal tract, which is actually not conducive to the digestion and absorption of food. Moreover, according to the Chinese Food Composition Table, the average carbohydrate content of yogurt is 9.3g/100g. Drinking yogurt after a long period of satiety can also make people gain weight.

It is generally recommended to drink yogurt about 1-2 hours after meals. If you have hawthorn at home, you can also boil some hawthorn water to promote digestion.

Overnight vegetables produce nitrite, which cannot be removed even when heated, so eating overnight vegetables can cause cancer. This statement may seem scientific, but it is not true.

Stem and leaf vegetables contain more nitrate, especially dark green leafy vegetables. If they are kept too long after cooking, nitrate will indeed be reduced to nitrite. Compared to normal conditions, the nitrite content in overnight green leafy vegetables does indeed slightly increase, but it is still below the national safety standards for processed food.

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There have been experiments that have shown that after an untouched dish is left in the refrigerator overnight, the nitrite content increases from 3mg/kg to 7mg/kg, far below the requirement that nitrite residues in various processed meats should not exceed 30-70mg/kg.

Animal food itself has a low nitrate content, making it less likely to produce nitrite compared to vegetarian vegetables. Therefore, the claim that eating overnight vegetables can cause cancer is not valid.

However, if the overnight vegetables are not properly stored, some bacteria may grow and nutrients may be lost. Therefore, it is more appropriate to "eat as much as you want".

Many people think that soybean milk and eggs cannot be eaten together, because there is a trypsin protease inhibitor in soybean milk, which will affect the absorption of egg protein.

However, soybean milk must be boiled before it can be eaten, and the trypsin protease inhibitor in it is just "afraid of heat". After 8 minutes of boiling and heating, it can be destroyed by more than 85%. The rest has basically become inactive, and will not affect the absorption and utilization of protein.

Therefore, as long as soybean milk is thoroughly cooked, eating it with eggs will not cause harm to the body. The methionine in eggs can also complement the lysine in soybeans to improve the utilization rate of protein.

Being slightly drunk after drinking often causes drowsiness, which makes many people believe that drinking a small amount of alcohol can help them sleep. According to statistics, 20% of Americans use alcohol as a sleep aid.

Alcohol can indeed help fall asleep at the beginning, but it can cause the brain to be in an abnormally active state, leading to shallow sleep and frequent awakenings in the middle, fundamentally disrupting the normal sleep structure of the human body and ultimately reducing sleep quality.

Moreover, if alcohol is consumed before bedtime for a long time, the body will develop tolerance, gradually increasing the demand for alcohol, forming a vicious cycle, leading to alcohol dependence and even alcoholism.

In addition, drinking alcohol can increase the risk of diseases such as atrial fibrillation and cancer, causing damage to organs such as the liver and kidneys, so drinking alcohol to aid sleep is not advisable.

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