Does drinking coffee affect sleep, cause calcium loss, and affect health?

A university in England invited 300 volunteers to participate in the study. They divided coffee lovers and non-coffee lovers into two groups and stopped drinking coffee 16 hours before the test to observe the changes in their concentration. After 16 hours of abstaining from coffee, only coffee lovers were allowed to drink coffee, while non-coffee lovers were not allowed to drink coffee. The results showed that the concentration of those who drank coffee was the same as that of non-coffee lovers, which was only at a normal level. Therefore, it can be inferred that even if non-coffee lovers drink coffee, it will not help improve their concentration or work efficiency.

The scholars in charge of the investigation said that the body's internal organs slow down the reaction of adenosine, and the reason why people feel refreshed after drinking coffee is that caffeine stops adenosine from entering cells, making it less likely for people to feel sleepy. The study also pointed out that caffeine can narrow blood vessels, speed up blood circulation, and cause headaches. Some coffee lovers will experience headaches, irritability, muscle tension, and nervousness if they don't drink coffee.

Does drinking coffee affect sleep?

Many people have had the experience of being unable to sleep after drinking coffee due to mental excitement. This is because there is a conductive substance called adenosine in the human body, which can control nerve activity, slow breathing, weaken emotions, reduce gastric acid secretion and have a diuretic effect. Caffeine can impersonate adenosine, making the body think that the effect of adenosine has already occurred, making you feel energetic, increase gastric acid, urinate more frequently, and naturally make it more difficult to fall asleep. It is worth noting that this short-term wakefulness caused by caffeine does not mean that physical strength has really been restored. In addition, everyone has a different metabolic rate for caffeine, and their sensitivity to it is also different, so some people do not feel that their sleep is affected after drinking coffee. Therefore, a cup of hot coffee after getting up in the morning can invigorate the body and mind and make you feel more comfortable, but it may cause insomnia at night.

Will it cause calcium loss?

As people pay more and more attention to the problem of calcium loss and osteoporosis, they also have considerable doubts about coffee. As for the relationship between caffeine intake and osteoporosis, it is still under study. There is no direct evidence that caffeine causes osteoporosis, but some studies have pointed out that caffeine increases calcium loss. Therefore, it is recommended that coffee lovers should eat more high-calcium foods to supplement calcium, such as preparing custard slices or custard cakes to enjoy with coffee, which can not only supplement calcium, but also make coffee more delicious.

Coffee and Beauty

There is no research result that shows that the caffeine and melanin in coffee have an absolute relationship with the increase of melanin in the skin or skin aging. On the contrary, a moderate amount of caffeine can accelerate metabolism, promote digestion, improve constipation, and improve the roughness of the skin. Regarding the fact that caffeine can accelerate metabolism, there is a saying that coffee can accelerate the burning of calories and achieve the effect of weight loss. Basically, the theory is correct, but this kind of calorie burning will not lead to much weight loss. If sugar and creamer are added to coffee, the calorie calculation is even more inconsistent with the principle of weight loss.

Coffee is a good friend of fitness

Another benefit of coffee is that it can increase your physical strength, which helps you exercise longer and more effectively. Caffeine is essential in group sports because it enhances concentration and reaction time. Drinking too much coffee, combined with intense exercise, can cause tachycardia and excitement, leading to insomnia, neurosis and other symptoms.