Ten unsuitable daily diets:
1, don't drink water before and after meals.
It is not advisable to drink water before meals, half an hour after meals and during meals. Some people eat dry steamed bread with water when it is their staple food; Some people always like to drink a cup of strong tea to get rid of greasy food. Some people always like to drink water while eating. These habits do not conform to food hygiene. Because, when eating, people's gastrointestinal organs will secrete digestive juice conditioned reflex, such as saliva secreted by the mouth when teeth chew food, digestive juice secreted by the stomach containing gastric acid and pepsin, etc. , mixed with food scraps. In this way, most nutrients in food are digested into substances that are easily absorbed by the human body. If you drink tea before, during and after meals, it will dilute saliva and gastric juice, weaken the activity of protease, adversely affect digestion and absorption, and your health will be poor for a long time. If you are very thirsty before meals, you can drink less boiled water or hot soup and have a rest before eating, so as not to affect the digestive function of the stomach.
2. It is not advisable to drink strong tea for a long time.
Caffeine and theophylline in tea can increase the excitability of the central nervous system and promote the activity of the stomach. It is characterized by accelerated peristalsis, excessive secretion of gastric wall cells and increased gastric acid. Drinking strong tea for a long time will increase the stimulation of gastric mucosa and easily lead to gastric ulcer. So drink less strong tea, especially people with ulcers.
3. Fruit can't replace vegetables.
Vitamins and minerals in most fruits, such as calcium and iron, are less than those in light-colored vegetables, which are much less than those in green and yellow vegetables. Many important physiological functions of the human body must be maintained by rich vitamins and minerals, making them often weakly alkaline, thus maintaining the normal function of the body.
Therefore, we should always eat more vegetables, and fruits can't replace vegetables.
4. Fruit juice can't replace fruit.
Drinking fruit juice is different from eating fruit. Because a lot of cellulose in fruit is destroyed in the process of juicing, drinking fruit juice will reduce people's intake of rich cellulose in fruit, which is not conducive to health. These celluloses have the health care functions of preventing and reducing diabetes and cardiovascular diseases, and can also effectively stimulate gastrointestinal peristalsis and promote defecation. Cellulose can also affect the activities of bacteria in the large intestine, reduce the production of cholic acid in the large intestine, dilute toxic substances in the intestine, soften feces, shorten the time of passing through the intestine, reduce the contact time between carcinogens and intestinal mucosa, and prevent the occurrence of colorectal cancer. In addition, eating fruit directly is easy to produce satiety, while drinking fruit juice will unconsciously absorb too much calories and sugar, increasing the chance of getting sick.
5, drinking drinks is not as good as drinking boiled water.
Drinks are not only several times or even dozens of times more expensive than boiled water, but more importantly, sugar or saccharin and a lot of electrolytes contained in drinks have negative effects on human body.
In the drinks that people often drink, a cup mostly contains 6 to 7 spoonfuls of sugar, which is called "virtual calories" in nutrition, that is, some calories without nutrition react with gastric acid, enzymes and contents after entering the stomach, thus increasing the stimulation to the stomach, disrupting the function of the digestive system, increasing the burden on the kidney and affecting the renal function. If you consume too many virtual calories from drinks, it may lead to children's inability to eat normally and lack of enough fat and protein.
Another data shows that among teenagers who prefer carbonated drinks, calcium deficiency accounts for 60%. Warm water can improve the activity of lactate dehydrogenase in organs, which is beneficial to eliminate fatigue and restore vitality in time. Boiled water is really worth drinking often, because it is economical and practical, and more importantly, it is good for health.
6. Three kinds of people eat less soybeans.
At present, bean products have become an indispensable staple food in our lives, but not everyone needs them. Soybean contains a chemical called phytoestrogen, which can stimulate the growth of estrogen receptor cells. About 4% of women who eat soybean health products have endometrial hyperplasia. In addition, the consumption of soybeans by pregnant or lactating women may endanger the reproductive development of baby boys. Therefore, pregnant women should pay special attention to eating soy products during pregnancy, or be cautious.
The chemical components contained in soybean can "simulate" the effect of estrogen. If it is eaten in large quantities for a long time, the number of male sperm will decrease. This result is very worrying, because it may reduce male reproductive function and lead to male sexual development abnormality.
7. Don't wash too much rice for too long.
Some people like to wash rice over and over again, and they are always worried that it will not be cleaned, and some even soak rice for hours. In fact, these practices are not worth the loss. Rice contains some water-soluble vitamins and inorganic salts, a large part of which exists in the outer layer of rice grains. Excessive elutriation or rubbing and excessive stirring will cause a large loss of nutrients on the surface of rice grains. Rice should not be soaked for a long time. If soaked for a long time before elutriation, some inorganic salts and soluble vitamins in rice grains will be dissolved in water, and the loss will be greater after elutriation. During rice washing, the loss rate of thiamine can reach 40% to 60%, the loss rate of riboflavin and nicotinic acid can reach 23% to 25%, and the loss rate of protein, fat, sugar, etc. There will also be different degrees of loss. In addition, rice will be crushed if soaked for a long time.
Therefore, attention should be paid to washing rice with cold water, not running water or hot water; Minimize water consumption and elutriation times to remove sediment; Don't rub and stir hard.
8. Smoking while drinking is harmful.
Smoking while drinking has a synergistic effect on human health, and the toxicity of each other will increase exponentially. Because cyanide, benzopyrene, carbon monoxide and other chemicals in smoke have carcinogenic effects, they will be deposited on human organs in the form of smoke tar, and alcohol will dissolve them and promote them to spread through mucous membranes, so the toxicity of smoking will increase exponentially. Moreover, tobacco poisoning will affect the metabolism of alcohol in the body and cause alcoholism.
9. It is not advisable to have soup and rice.
The main harm of drinking soup and soaking rice is that it is easy to cause stomach trouble. Because soup and rice are mixed together, the food stays in the mouth for a short time and is swallowed without full chewing. Moreover, the taste nerve on the tongue is not fully stimulated, the digestive juice produced by the stomach and pancreas is not much, and it is diluted by the soup, so the food eaten can not be well digested and absorbed, which is very harmful to the stomach.
10, candles should not be lit on the birthday cake.
It has become a routine to light candles on birthday cakes. However, this practice is unscientific and unhygienic.
There are many hazards in lighting candles on cakes: first, a good cream cake or fresh milk cake is riddled with small candles and will be polluted; Secondly, when lighting small candles, dirt such as soot and candle oil will inevitably fall off, causing secondary pollution to the cake; Third, after lighting the candle, you should take a long breath and blow it out, and if necessary, you should help others blow it out, which will inevitably lead to spitting and germs flying. If the person blowing candles is a patient with digestive tract or respiratory diseases, it will inevitably blow germs onto the cake. So it is not advisable to light candles on the cake.