Black coffee: benefits, effects and potential side effects

Black coffee has many functions and effects, such as refreshing the mind, promoting digestion, and reducing the risk of diabetes. However, there are also potential side effects. For example, excessive drinking may cause insomnia, anxiety and other problems. It may also stimulate gastric acid secretion, damage the gastric mucosa, and cause stomach discomfort. When enjoying the delicious taste and effects of black coffee, you should drink it in moderation to avoid side effects.

In busy modern life, black coffee has become an indispensable refreshing drink for many people. As a widely popular drink, black coffee has many functions and effects that are well known to the public. But at the same time, everything has two sides, and black coffee is no exception. While it brings many benefits, it may also bring some potential side effects.

1. The efficacy and function of black coffee

1. Refresh the mind : The caffeine in black coffee is an alkaloid that can stimulate the central nervous system, help improve attention and concentration, and thus improve work or study efficiency.

2. Antioxidant : The polyphenols in black coffee have antioxidant effects, which can remove free radicals in the body and slow down aging.

3. Promote metabolism : Caffeine can stimulate the gastrointestinal tract, promote the secretion of digestive juice, accelerate metabolism, and help lose weight.

4. Improve mood : Drinking black coffee in moderation is believed to relieve depression and improve mood index.

5. Diuretic and detumescent : Caffeine can stimulate the kidneys, promote urine excretion, and help eliminate edema.

Potential side effects of black coffee

1. Insomnia and decreased sleep quality : Caffeine’s stimulating effect on the central nervous system may lead to insomnia or decreased sleep quality, especially for people who are sensitive to caffeine.

2. Palpitations and arrhythmia : Excessive caffeine intake may cause palpitations and arrhythmia, especially for people with sensitive hearts or heart disease.

3. Digestive system discomfort : Excessive consumption of black coffee may stimulate gastric acid secretion, leading to digestive system problems such as stomach pain and gastric ulcers.

4. Affecting calcium absorption : Long-term drinking of black coffee may affect calcium absorption and increase the risk of osteoporosis.

5. Mood swings : Although drinking black coffee in moderation can improve your mood, drinking too much may lead to mood swings and even psychological problems such as anxiety and depression.

3. Recommendations for drinking black coffee

1. Control the amount of caffeine consumed : The recommended daily caffeine intake for adults should not exceed 400 mg, which is equivalent to two cups of black coffee.

2. Time selection : Try to avoid drinking caffeinated beverages at night to avoid affecting your sleep.

3. Individual differences : Different people have different sensitivities to caffeine, so the amount of caffeine consumed should be adjusted according to individual circumstances.

4. Pairing with food : It is not advisable to drink black coffee on an empty stomach. It is best to drink it after a meal to reduce irritation to the stomach.

5. Pregnant women and special groups : Pregnant women, breastfeeding women, children, the elderly and people with high blood pressure, heart disease and other diseases should drink it with caution.

The effects and functions of black coffee can bring us many benefits when consumed in moderation, but we should also understand and pay attention to its potential side effects. While enjoying the refreshing effect of black coffee, we should also pay attention to our physical condition, arrange the amount and time of drinking reasonably, and let black coffee truly become a good companion in our lives.