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Yes, the harm of caffeine.
1.Exacerbate high blood pressure: Caffeine is often combined with other simple painkillers because of its pain-relieving effects, but if you take it in large amounts for a long time, using a lot of caffeine will only make your condition worse.
Because caffeine alone can raise blood pressure, and when combined with emotional stress, it can have a dangerous synergistic effect, so people at risk of high blood pressure should especially avoid drinking caffeinated beverages during stressful work times. Some people who drink coffee all year round think they are immune to the effects of caffeine, but this is not the case, as one study showed that blood pressure can rise for up to 12 hours after drinking a cup of coffee.
2.Induce osteoporosis: Caffeine itself has a good diuretic effect, if you drink coffee for a long time and in large quantities, it is easy to cause bone loss, which will have an adverse impact on bone preservation, and for women, it may increase the threat of osteoporosis.
However, the premise is that people who lack enough calcium in their usual food, or who do not move often, plus postmenopausal women, due to the lack of estrogen caused by calcium loss, the above conditions, coupled with a large amount of caffeine, may pose a threat to bones. If you can enjoy it in a reasonable amount, you can still do it without choking.
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Yes, it will make people often sleepless.
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<> "6 Benefits of Drinking Coffee for a Long Time for the Brain.
1. Concentration.
15 to 45 minutes after drinking coffee, it has the greatest effect on our brain, and the total effect lasts for about two hours. This should be the well-known benefit of caffeine, how much caffeine is contained in many refreshing drinks, and a cup of strong coffee in the morning or between work can help us improve our focus and productivity.
2. Memory.
Caffeine works by increasing neuronal firing, which in turn leads to increased short-term memory skills and reaction time. In a double-blind experiment in a group of people aged 18 to 30 years old, Daniel et al. found that ingesting 200 mg of caffeine (i.e., a cup of strong coffee) enhanced their ability to remember what they had learned 24 hours earlier.
3. Prevent brain degeneration.
Caffeine can significantly reduce the risk of Alzheimer's disease. That is, with age, people who drink coffee for a long time have a lower probability of suffering from Alzheimer's disease, Parkinson's and other diseases, and existing studies have shown that caffeine protects nerves by reducing the production of B-amyloid, thereby preventing neurodegeneration, and caffeine is also regarded as a potential medicine to improve Alzheimer's disease.
4. Reduce depression.
Depression is real, especially during the pandemic. A ++ year-long study published in JAMA Internal Medicine has previously said that people who drink coffee regularly have a reduced risk of depression after collecting data from thousands of people. Neurologists at Harvard University recently released a new review suggesting that coffee may reduce the risk of depression by more than 33%.
5. Improve mood.
Coffee improves emotional state. These effects may explain why coffee and tea are widely used as breakfast beverages. Several studies of women, older adults, and other young and middle-aged populations have confirmed this finding, and coffee intake has also reduced the risk of suicide.
6. Improve judgment and reasoning skills.
Caffeine has also been shown to improve reasoning and decision-making accuracy, as well as math scores.
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If we drink coffee regularly, it can cause a lot of effects on the body. For example, insomnia, forgetfulness, anxiety and other effects on the main ingredient in coffee is caffeine, caffeine can also excite the nerves. Therefore, if you drink coffee before going to bed, it will lead to insomnia.
We should not drink a lot of coffee for a long time, coffee can also excite the nerves and can even lead to anxiety, depression and other conditions. Moreover, coffee also has a certain diuretic effect.
It can also cause bone loss and cause osteoporosis, if it is a menopausal woman, you should pay attention to the energy to drink less coffee, or not to drink coffee.
Moderate consumption has the benefits of refreshing, diuretic, promoting cerebral capillary circulation, making thinking more active, concentration and hyperoxidation (slowing down aging and maintaining youth) and so on. But pay attention: First, you can't drink coffee on an empty stomach, the old stomach can't stand it when you drink coffee on an empty stomach, you will be flustered, and when you drink too much, you will be as uncomfortable as drinking and getting drunk. >>>More
Okay, don't drink it after 3 p.m.
This question is like asking whether eating is good for the human body, eating too much will definitely hurt the body, and eating less will also cause nutritional deficiencies.
Drinking coffee often is beneficial to the liver, but drinking coffee often can easily lead to myocardial infarction, so drinking coffee should also pay attention to the appropriate amount, 1 2 cups a day can produce liver protection effect. In this way, you can not only enjoy the deliciousness and artistic conception of coffee, but also have health. Drinking coffee often can easily lead to myocardial infarction A new study shows that there is a gene that can determine the speed of caffeine metabolism in the human body, which means that drinking coffee will increase the likelihood of some myocardial infarction. >>>More
Pros and cons of drinking coffee.
The main stimulant contained in coffee is caffeine. In addition, it contains fats and minerals such as magnesium, potassium, and copper, as well as B vitamins, aromas, and toxins. That said, coffee doesn't have any nutritional value, but it has many pros and cons on the body due to the effects of caffeine. >>>More