When it comes to “caffeine,” people seem to be accustomed to classifying coffee into the “unhealthy” diet. But there are also many positive signals to remind us that coffee is not only refreshing, but also promoting health.
Let’s take a look at some experimental evidence about coffee: a small survey from Canada shows that young people who drink caffeinated beverages for a long time have higher levels of insulin in their blood than normal people, so they are more likely to develop type 2 diabetes. . Researchers believe that caffeine can weaken the body’s ability to resist high blood sugar, or lead to “insulin tolerance”, which means that the body has to secrete more insulin to remove excess sugar from the blood.
In order to “redress” coffee, the World Health Organization has set up an organization that “indicates that drinking coffee every day may be good for health”. The organization’s International Agency for Research on Cancer has convened a team of more than 20 scientists to review more than 1,000 studies, some of which suggest that coffee can prevent liver cancer and uterine cancer.
With regard to the close relationship between coffee and the cardiovascular system, researchers at the University of California, San Francisco, proposed a great gospel that could sensationalize the “love of the family.” They have even published a report in the Journal of the American Heart Association. Regular intake of caffeine, such as coffee, chocolate and tea, will not only cause heart palpitations, but also contribute to cardiovascular health.
Coffee has a big or small impact on many systems of the human body. Some people may ask: Good and bad, how should we choose? Should I drink it? In my opinion, coffee and wine have the same effect. Appropriate people not only have no harm in drinking proper wine, but also promote health to a certain extent.
Drink 800 bags a year, is coffee a “health guard” or a “cardiovascular killer”?
Cardiovascular patients drink coffee carefully
Coffee can excite the body’s nervous system, so it can refresh, and coffee can also promote blood circulation. The realization of these functions is closely related to caffeine. It was found that caffeine can increase systolic blood pressure by 2.0mmHg~2.4mmHg and diastolic blood pressure by 0.73mmHg~0.80mmHg. Of course, these effects have time constraints, rather than “sustained effects,” showing that the effect of coffee on blood pressure is not as “arrogant” as rumored.
There are also some interesting studies (from the Italian International Research Council) suggesting that 5 cups of coffee a day in the female group, regardless of systolic or diastolic blood pressure, have different degrees of reduction, which means that women can drink 5 cups of coffee a day. Effectively control high blood pressure. Considering that the study included more than 5,000 people, this conclusion is still worth considering.
But as I said before, “to drink” properly, it is like wine: a small wine, a big wine, and a big wine. As long as the daily intake of coffee does not exceed 3 cups (200ml), it will not harm blood pressure. On the contrary, not only the blood pressure is unstable, but also the incidence of dangerous events such as coronary heart disease. In response, a study from the United States made a very necessary reminder: those who drink more than 9 cups (600 ml) a day are twice as likely to suffer from heart disease as those who do not drink or drink less.
It can be seen that as long as you do not take coffee as a daily drinking water, neither the heart nor your blood pressure will be significantly affected. Of course, if you have already determined that you are a cardiovascular disease patient, especially arrhythmia, repeated angina, or do not drink.
Do not drink coffee while smoking or taking medicine 1. Do not drink coffee while smoking.
Drinking coffee while smoking can cause excessive brain excitement. Under the mutagenic effect of nicotine, caffeine may cause mutations in certain tissues of the body, such as stimulating the production of cancer cells.
2. Avoid drinking coffee when taking the medicine.
Many common medicines should not be taken with coffee (including tea), which can cause nausea, vomiting and dizziness, and severe severe arrhythmias caused by chemical reactions.
3. Children should not drink coffee.
Children’s tolerance to caffeine and excretion is much weaker than that of adults. Drinking coffee may cause symptoms such as restlessness and nausea in children.
4. Pregnant women should not drink coffee.
Caffeine can quickly enter the fetus through the placenta of the pregnant woman, and the mother may not have much reaction, but this is very unfavorable for the normal development of the fetus. Studies have shown that long-term excessive drinking of coffee in pregnant women can lead to abnormal development of the fetal nervous system, and even poor mental retardation, poor physical activity and other undesirable phenomena.
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Instant coffee is not so beautiful
Instant coffee is a special case because it is made in a different way than freshly ground coffee. Instant coffee itself contains more hydrogenated vegetable oil (trans fatty acid), and its process requirements also make the content of food additives relatively increased. In order to make up for the lack of aroma caused by insufficient extraction, some coffee products will also add flavor. In order to increase the taste of coffee, people have also invented a coffee companion that has been criticized by nutritionists.
In short, these fast-food processes have changed the true face of coffee, although convenient, long-term drinking will have a negative impact on health.