The harm of drinking coffee is:
1. Disordering caffeine during tension can improve alertness, sensitivity, memory and concentration. But drinking more coffee than you are used to, will produce a similar dose of stimulants, which will cause nervousness. For people prone to anxiety disorders, caffeine can cause palmar sweating, palpitations, tinnitus and other symptoms to worsen.
2. Aggravating high blood pressure caffeine, because of its own analgesic effect, is often combined with other simple painkillers. However, if you take it in large quantities for a long time, if you already have high blood pressure, using a large amount of caffeine will only make your situation more serious. Because caffeine alone can increase blood pressure, and if combined with emotional tension, it will have a dangerous multiplying effect. Therefore, people at risk of high blood pressure should especially avoid drinking caffeinated drinks when working under pressure. Some people who drink coffee all the year think they are immune to caffeine, but this is not the case. A study shows that after drinking a cup of coffee, blood pressure can rise for up to 12 hours.
3. Inducing osteoporosis caffeine has good diuretic effect. If you drink a lot of coffee for a long time, it is easy to cause bone loss, which will have adverse effects on bone mass preservation. For women, it may increase the threat of osteoporosis. But the premise is that people who lack enough calcium in their daily food, or who don't move often, plus women after menopause, will lose calcium due to lack of estrogen. These situations, together with a large amount of caffeine, may pose a threat to bone. If you can enjoy it according to a reasonable amount, you can still do it without choking.
The advantages are:
1. Coffee contains certain nutrients. The niacin of coffee contains vitamin B, and the roasted coffee beans contain more. And have free fatty acid, caffeine, tannic acid and so on.
2. Coffee is good for the skin. Coffee can promote metabolism, activate digestive organs, and have great effect on constipation. Taking a bath with coffee powder is a kind of warm therapy, which can reduce weight.
3. Coffee has the function of dissolving wine. Drinking coffee after drinking alcohol will make acetaldehyde, which is transformed from alcohol, oxidize rapidly, decompose into water and carbon dioxide, and discharge out of the body.
4. Coffee can eliminate fatigue. To eliminate fatigue, we must supplement nutrition, rest and sleep, and promote metabolic functions, which coffee has.
5. Three cups of coffee a day can prevent gallstones. For caffeinated coffee, which can stimulate gallbladder contraction and reduce cholesterol in bile, which is easy to form gallstones, the latest Harvard University researchers found that men who drink two or three cups of coffee a day have less than 40% chance of getting gallstones.
6. Regular drinking of coffee can prevent radiation injury. Radiation damage, especially the radiation of electrical appliances, has become a more prominent pollution. Researchers at Bhabha in India have come to this conclusion in mouse experiments and say it can be applied to humans.
According to this article, coffee drinking for girls has an impact on osteoporosis and high blood pressure. It is suggested that girls should pay attention to the consumption of coffee when they use coffee to refresh themselves. Coffee can eliminate fatigue, but it's better to exercise properly or stand up for a while.