It's not reliable to lose weight by drinking coffee.

It is reported that some consumers developed palpitations, palpitations, nausea and other reactions after drinking "slimming coffee". Finally, they fainted after nausea, vomiting and left because of sudden death. Family members doubt the efficacy and side effects of "slimming coffee", but in fact, there are still many women who think that drinking coffee can lose weight, and may even drink too much coffee every day. From the perspective of nutrition, coffee contains a variety of living active substances, which has many merits for human health, but coffee itself is not flawless. If you want to drink coffee healthily, you should also pay attention to several key points of drinking coffee healthily.

Can drinking coffee really help you lose weight?

Many people are superstitious about the weight loss effect of drinking coffee, and more people will want to ask, "does drinking coffee really have a weight loss effect?" In fact, the correct understanding of this sentence should be "drinking coffee can help you lose weight" rather than "drinking coffee can help you lose weight". After all, losing weight is a process of balancing energy intake and energy consumption. this process involves physiological characteristics, exercise patterns, diet and many other elements, which can not be solved simply by a cup of coffee. Therefore, the idea that drinking coffee can lose weight is a misunderstanding of coffee.

So what about coffee helping you lose weight? In the experiment, Masuki Suzuki of Tokyo Tzu Hui Medical University found that people who jogged for 30 minutes after drinking coffee spent more energy than those who jogged for 30 minutes after drinking boiled water. He thought that the caffeine in coffee could stimulate the sympathetic nerve and promote the energy release of free fatty acids in the blood, which in turn consumes more energy. In aerobic exercise, fat is usually the main source of energy, and coffee can promote fat burning efficiency. In addition, in mouse experiments, it was found that caffeine combined with exercise reduced internal fat by 60%. In other words, exercise after drinking coffee can burn fat better than exercise alone, so it helps to lose weight.

Drinking coffee can easily cause insomnia.

Because of the caffeine in coffee, caffeine doesn't actually relieve fatigue, it just doesn't make the brain feel tired. When people feel tired from exercise or mental work, adenosine is gradually hoarded in the brain as a product of energy metabolism, making people feel tired. If you drink coffee at this time, then caffeine will replace adenosine in the brain attached to the adenosine receptor, so that people do not feel tired, thus preventing drowsiness. But for some people who are sensitive to caffeine, caffeine may excite the nerve center and keep the sympathetic nerve excited all the time. When the parasympathetic nerve is unable to activate and exert its function, it is difficult for people to enter the sleep state, thus causing insomnia. For people who are sensitive to caffeine, it is no longer appropriate to drink coffee in the afternoon, nor should they drink drinks containing caffeine such as tea.

Drink coffee and watch out for dehydration

In addition to stimulating the nerves, caffeine also has a powerful diuretic function. After drinking coffee, people will feel like they have drunk and run to the toilet as frequently. This is actually the result of caffeine's diuretic function. When people urinate frequently and can not fully replenish water, people are easy to be dehydrated, and all kinds of symptoms caused by lack of water in the body should be paid enough attention. When drinking coffee, you should pay attention to replenishing plain boiled water, and you can also judge whether you are short of water by observing the color of your urine. If the urine is dark yellow, it means that the human body is in a state of dehydration. It is not appropriate to continue drinking coffee at this time. You should replenish plain boiled water. In addition, it is important to note that caffeine stimulates excessive secretion of stomach acid, so people with excessive stomach acid should drink less coffee and be more careful not to drink coffee on an empty stomach.

Drinking coffee is prone to palpitations and should avoid drinking coffee.

Due to the medical effect of caffeine, if the concentration of caffeine in the blood rises sharply, it may stimulate the central nervous system, causing dizziness, rapid heartbeat, excitement, restlessness and other mental symptoms. If the concentration of caffeine in the blood exceeds 40 micrograms / ml, no matter who may have arrhythmias, spasms and other symptoms. It has been reported that women who drink six or more cups of coffee a day have a 2.5 times higher risk of myocardial infarction; in areas where coffee is consumed more in Finland, mortality is also higher, but a large number of prospective studies do not prove that coffee is an independent cause of death from coronary heart disease. Although some people had a slight increase in blood pressure an hour after taking 250mg caffeine, large studies did not find any relationship between coffee consumption and blood pressure. Caffeine can shorten the effective refractory period of atrioventricular node, resulting in a variety of rapid arrhythmias and early beats. Paroxysmal atrial tachycardia occurred in 1 case after taking coffee. In other words, for some people who are sensitive to caffeine, there is a link between caffeine intake and heart health, such as women who reported sudden death from drinking coffee, or because they are sensitive to caffeine. causes symptoms such as palpitations, palpitations, dizziness, and may even cause sudden cardiac death. Therefore, if you drink coffee after palpitations, palpitations, dizziness, etc., caffeine intake should be reduced or avoided.