The side effects of drinking black coffee

The side effects of drinking black coffee

Coffee is a must-have drink for many people in the morning, especially black coffee. It not only refreshes the mind, but also has certain antioxidant and metabolism-promoting effects. However, drinking black coffee also has some side effects, and today we will reveal these side effects.

1. Increased anxiety and tension

Drinking black coffee contains a lot of caffeine, which is a stimulant. Moderate intake can increase alertness and concentration, but excessive intake can cause anxiety and tension. Especially for those who are prone to anxiety or mental illness, drinking too much black coffee may aggravate their symptoms.

2. Affects sleep quality

Drinking black coffee in the evening or before bedtime may affect sleep quality due to its high caffeine content. Depending on individual differences, some people may be more sensitive to caffeine, and even drinking a cup of black coffee during the day may make it difficult to fall asleep at night. Therefore, it is recommended not to consume caffeinated beverages after 2 pm.

3. Increase gastric acid secretion

The caffeine in black coffee can stimulate the gastric mucosa to secrete gastric acid. For people who already have stomach problems or digestive system problems, excessive intake of black coffee may cause stomach pain, indigestion and other symptoms. In addition, long-term and large-scale intake of black coffee may also increase the risk of problems such as ulcers and esophageal reflux.

4. Dependence and Withdrawal

Drinking black coffee contains a certain amount of caffeine, which can easily lead to dependence in the long-term use. If you suddenly stop drinking black coffee, you may experience withdrawal reactions, such as headaches, anxiety, depression and other discomfort. In order to avoid this, when reducing or stopping the intake of black coffee, you need to gradually reduce the dosage to allow the body to adapt.

5. Affects nutrient absorption

The caffeine in black coffee can affect the body's absorption of some important nutrients. For example, caffeine can inhibit the absorption of iron, and long-term and large-scale intake of black coffee may lead to iron deficiency anemia. In addition, it may also affect the absorption and utilization of minerals such as calcium and zinc.

6. Has a certain impact on the cardiovascular system

Excessive intake of black coffee may cause discomfort such as palpitations and increased heart rate. In addition, long-term and large-scale drinking of black coffee is also associated with an increased risk of hypertension and coronary heart disease. Although these associations are not direct causal relationships and there are large individual differences, they still need to be treated with caution.

7. Other side effects

In addition to the side effects listed above, drinking too much black coffee may lead to other problems, such as oral problems (such as tooth stains, bad breath), dehydration (due to increased urination), and unpleasant symptoms such as dizziness or vertigo.

In conclusion, although drinking black coffee has some benefits, it also has some side effects. Therefore, you need to drink black coffee in moderation and adjust your intake according to your personal situation. If you have any health problems or are allergic to caffeine, please consult your doctor before drinking.