Black coffee, benefits and risks

Black coffee is a popular drink with many benefits, such as refreshing the mind, promoting digestion, and reducing the risk of diabetes. There are also some hidden dangers. For example, excessive drinking may cause insomnia, palpitations and other adverse effects. Especially for certain groups such as pregnant women and children, they should drink it with caution. Black coffee may also have a negative impact on the cardiovascular system. Long-term excessive drinking may increase the risk of cardiovascular disease. While enjoying black coffee, we should also pay attention to its potential risks and drink it reasonably.

Black coffee, as a popular drink, has many fans around the world. It not only refreshes the mind, but has also been regarded as a must-have drink by many fitness enthusiasts in recent years. But at the same time, the impact of black coffee on the human body, especially its potential disadvantages, is often discussed by people. This article will give you an in-depth understanding of the benefits and disadvantages of black coffee on the human body and provide a reference for your health decisions.

benefit :

1. Refresh the mind : The caffeine in black coffee is an alkaloid that can penetrate the blood into the brain and block the binding of adenosine to its receptors, thereby reducing fatigue and refreshing the mind, which has a significant effect on improving work and learning efficiency.

2. Promote metabolism : Caffeine can stimulate metabolism, make the body consume more calories, and help lose weight. It can also stimulate gastrointestinal motility and promote digestion.

3. Protect cardiovascular system : Drinking black coffee in moderation can help reduce the risk of cardiovascular disease. Studies have shown that caffeine can increase the level of high-density lipoprotein cholesterol, which is a "good" cholesterol that is beneficial to cardiovascular system.

4. Antioxidant : Many ingredients in black coffee have antioxidant effects, such as cafestol and kahweol. These substances can remove free radicals in the body and delay aging.

harm :

1. Decreased sleep quality : Although the stimulating effect of caffeine can refresh you, it may also lead to decreased sleep quality. For some people, drinking black coffee at night may cause insomnia or poor sleep quality.

2. Stimulate gastric acid secretion : Long-term and excessive drinking of black coffee may lead to excessive gastric acid, causing symptoms such as stomach pain and heartburn. For people with sensitive gastrointestinal tract, this may aggravate stomach discomfort.

3. Anxiety and palpitations : The stimulating effect of caffeine may also cause some people to experience discomfort such as accelerated heartbeat and palpitations. Long-term and excessive intake of caffeine may also aggravate anxiety.

4. Impact on bone health : Studies have shown that long-term excessive drinking of black coffee may lead to calcium loss and increase the risk of osteoporosis, especially for middle-aged and elderly people, this impact is more significant.

5. Skin problems : Some people are sensitive to caffeine and may experience skin problems such as acne, dry skin, etc. Long-term drinking of black coffee may also make the skin rough.

6. Affecting nutrient absorption : Caffeine may interfere with the absorption of certain nutrients, such as iron and calcium. Long-term and excessive drinking of black coffee may lead to malnutrition.

Black coffee has many effects on the human body. Drinking black coffee in moderation can bring many benefits, but drinking too much may bring a series of health problems. When choosing to drink black coffee, we should arrange the amount of drinking scientifically and reasonably according to our physical condition and living habits, and avoid excessive dependence. If there is any discomfort, we should seek medical advice in time to ensure that our health is not affected.