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1.Beneficial effects of drinking coffee on the body: on the nervous system:
Caffeine has a brain-stimulating effect, which can eliminate feelings of laziness, make people feel relaxed and happy, and can make people concentrate, think quickly and recall memory. Caffeine has been shown to speed up calculations and computers, and can make car drivers move quickly. But there is no scientific evidence to prove that caffeine has an effect on improving the quality of work.
For cardiovascular: Drinking coffee can increase the heartbeat, increase blood pressure, promote blood circulation, and enhance myocardial contraction. For the urinary system:
Caffeine can dilate the blood vessels of the kidneys and increase the blood flow of the glomeruli, thus increasing the water penetration and detoxification function of the kidneys, which can be said to have a diuretic effect. For the respiratory system: Caffeine relaxes the smooth muscles around the trachea, which dilates the trachea and increases the volume of breathing.
However, caffeine should not be used as a drug for clinical ** asthma. 2.Effects of Coffee Drinking on Physical Ills:
Drinking a lot of coffee can affect appetite and may cause vomiting and cramps, as well as gastritis and a thick tongue coating, which can make the body feel tired and weak. Drinking a lot of coffee increases urine output, harms the bladder, and may cause urinary tract infections. Too much caffeine in the body has a negative effect on the nervous system, causing insomnia, shaking hands, and slurred speech.
The latest research shows that when breastfeeding women drink coffee, caffeine can enter the child's body with the milk, making the child irritable and unable to sleep. Coffee is a risk factor for those with heart disease and high blood pressure. Studies done in the United States have shown that drinking coffee can worsen heart disease and high blood pressure.
The daily intake of caffeine must be controlled within 200 mg, that is, no more than 3 cups of coffee per day. Coffee should never be given to children, and you are advised not to give coffee to teenagers under the age of 15. Try not to drink coffee or drink less coffee after the age of 40.
The latest animal experiments suggest that caffeine may be a carcinogenic factor. Breastfeeding women should not drink coffee.
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The weather is getting cooler, the charm of the fat house happy water is gradually fading, and the life-sustaining artifact coffee has become a new favorite. Because I don't want to pretend to be coffee and drink sugar water, I like to drink black coffee. Many people will say that drinking black coffee also hurts their teeth.
The first is that black coffee is too sour and will erode teeth. In fact, black coffee is not very sour, the pH value is about 5, and the pH value of dark roast coffee is around the same, and this acidity has almost no damage to the teeth. It is important to know that the pH of the organic acids produced by the decomposition of sugars in caries is about 4, and the pH value of cola is between 2-3, which is the terminator of teeth.
It is also said that drinking coffee can lead to osteoporosis and even pathological fractures. I have read a lot of various truths said by doctors, and I have also read some literature, but there is not much theoretical evidence to support it. Studies in the United States found that coffee drinkers had no statistically significant probability of fractures compared to non-coffee drinkers, i.e., there was no evidence.
There is a similar study in Japan that found that drinking coffee did not worsen the probability of fractures. Many people say that caffeine will accelerate the loss of calcium, but if it causes pathological changes, it is estimated that even Nestle can not afford to drink the rhythm, which is real coffee when drinking water.
So, in the rainy autumn, have a cup of black coffee, refreshing and healthy what to eat can hurt your teeth
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When we drink too much coffee, our teeth will turn yellow, which is what we often call coffee teeth, in addition, drinking coffee will also affect our breath, why is this? I'll introduce you below.
Why do your teeth turn yellow when you drink coffee.
Coffee is a colored beverage that contains a dark brown substance, tannic acid, which forms melanin and adheres to the surface of teeth and calculus. At this time, scaling and polishing can remove calculus and tooth surface pigment, and restore the color of the tooth itself. However, over time, tannic acid can penetrate into the enamel and make the teeth yellow, which requires teeth whitening and all-ceramic veneers to improve.
If you sacrifice some taste and drink coffee through a straw (please make sure the temperature is not hot before drinking), most of the liquid goes directly from the middle and back of the mouth, through the throat into the esophagus, which will indeed reduce the contact area between the teeth and the coffee; At the same time, it is recommended to rinse your mouth with water after drinking coffee, and talk about it can significantly reduce the speed and degree of teeth turning black and yellow!
Why Drinking Coffee Affects Our Breath.
First of all, drinking coffee can cause xerostomia, often referred to as "dry mouth". This is because coffee contains caffeine, usually up to 200 mg in a 237 ml cup, which is one of the main culprits that causes a decrease in saliva as well as a dry mouth. When saliva is insufficient, the conditions for bacteria and fungi to grow are ripe (because saliva helps kill bacteria found in the mouth), which can lead to bad breath.
In addition, the lack of saliva can make it difficult to wash away and digest food debris that sticks to the tongue or teeth, and can even lead to tooth decay.
For example, espresso contains about 75 mg of caffeine per ounce, so you'll have a memorable coffee breath not only because of the caffeine, but also because of its strong flavor that lasts longer. In fact, most bad breath follows a general rule of thumb:
The stronger the smell of the liquid or food ingested, the stronger the effect on breathing. This is also the reason why eating onions or garlic will last for hours and make your breath unpleasant.
Another reason behind coffee breath isn't actually your coffee, but other things you add with your coffee, such as cream, milk, or even artificially flavored non-dairy creamers, etc., which can exacerbate the overgrowth of bacteria in your mouth. Stirring sugar, a component of bacteria that multiply, overspeeds the bacteria, and the fact that coffee is highly acidic, is another condition that causes the famous bacteria to multiply, and it's surprisingly efficient.
One solution that can help eliminate coffee breath is to drink a cup of hand-watered coffee without adding cream or sugar. It may be a bit unsatisfying for some coffee lovers, but it may mean the difference between bad breath and better controlled breath. Another idea is to switch to drinking tea, which is still hot and caffeinated (70 mg per serving) but has much less acidity than coffee and doesn't produce the same bad breath taste.
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Yes, it is easy to turn yellow after a long period of pigmentation, but brushing your teeth frequently, especially after drinking coffee, has little effect. But you have to be aware of a more serious problem, drinking coffee is not only yellowing of your teeth, but also can cause pigmentation, causing pigmentation. In addition, drinking coffee every day is not good for the nerves.
However, as an aside, I also drank coffee every day when I took the college entrance examination, and I just liked that feeling at that time, but I didn't really feel so refreshing, hehe.
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Doesn't turn black. Coffee is very good, and drinking coffee regularly is very good for the body.
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Hehe, regular smoking will turn yellow your teeth It's okay to drink coffee.
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No, there is no color in coffee.
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Secondly, you can use cosmetic methods such as dental veneers to achieve the purpose of whitening teeth, which is a very common cosmetic dental restoration method. In this way, it is possible to cover up the defects of the teeth, including discoloration, chipped and so on. Resin veneers are widely used in the market, which can be well bonded to the tooth surface and is not easy to fall off.
Although the effect is good, there is also a problem, that is, it is more expensive.
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Yes, ** teeth will turn black, for beauty, it is recommended that you go to see the book "Exposing Female Stars" written by Da S, which is of great help to beauty and skin care.
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It does not turn black, but it does turn yellow.
Coffee is a colored drink that contains a dark brown substance called tannins, which precipitate and attach to the teeth and even penetrate into the tooth enamel. Over time, tannic acid builds up further in the teeth, deepening into the teeth, turning them yellow over time.
If the teeth have turned yellow, even if you brush your teeth carefully every day, using the friction agents and chemical whitening ingredients contained in the toothpaste, through physical friction, the teeth will still not be able to regain their shiny whiteness, because the chemical components of the toothpaste are difficult to penetrate into the tooth enamel.
If your teeth turn yellow after drinking coffee, you can only get the teeth brighter and whiter than they were by seeking the help of a professional dentist and using a variety of bleaching agents with higher concentrations. Cold light whitening is a good choice as it removes pigmentation from the teeth and produces a visible whitening effect.
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If you drink too much coffee, the pigment will penetrate the surface of the tooth, settle in the essence of the tooth, and make the tooth slowly darken. Not only coffee, but all foods containing pigments, such as tea, fruit juices, etc., may cause pigmentation when drunk for a long time.
In general, if you take two cups of coffee a day in the morning and evening, your teeth will become noticeably gray in less than a month. In the long run, the pigment on the teeth will become darker and darker, and the contrast with the previous tooth color is very strong. At this time, daily brushing alone is no longer effective in whitening teeth, because brushing can only remove plaque and tartar from the surface of the teeth, but not whitening the discolored dentin.
For coffee lovers, preventing pigmentation is key. The easiest way is to rinse your mouth after every cup of coffee, and if possible, brush your teeth, to prevent pigmentation on your teeth. If the pigment has settled on the teeth, you can only rely on specialized teeth whitening products or through the help of a professional dentist.
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It will not turn black, and it is easy to turn yellow after a long period of pigmentation, but brushing your teeth frequently, especially after drinking coffee, has little effect.
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Do you believe this kind of nonsense? Drink often to make your teeth clear and white, and experience it for yourself.
It's harmful, that's a doubt, I don't remember where I read it, anyway, I've seen that tea is better than coffee, and tea is good for the body
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Fifty percent is genetic, and fifty percent is nurture. Wish.