People with these symptoms should pay attention:

  • Sleep Disordered Patient

Caffeine has a central nervous system excitatory effect, which is often referred to as a refreshing effect, which is why many office workers and postgraduate entrance examination parties rely on coffee. Some people's coffee metabolism genes are relatively weak, and it takes a long time to metabolize even a little caffeine. Therefore, if you have problems such as insomnia and sleep disorders, try not to drink coffee, or drink less coffee, and it is best not to drink coffee in the afternoon or before going to bed.

  •  People with panic and anxiety

Coffee can indeed trigger sudden panic attacks and anxiety. Studies have found that high doses of caffeine (about 5 to 9 cups of coffee) of 400 to 800 mg per day may have negative effects, such as causing anxiety, tension, nervousness, panic and tremors. As long as you don't exceed 300-400 mg of caffeine (about 4-5 cups of coffee), you won't have these problems.

  • People with arrhythmia

After some people drink coffee, they will experience discomfort such as rapid heartbeat, nausea, and dizziness. In fact, this belongs to "caffeine intolerance". This is normal and depends on an individual's sensitivity to caffeine. Some people are more sensitive to caffeine, and the caffeine metabolism is slower. After drinking coffee, they will feel arrhythmia, rapid heartbeat, and heart palpitations, but some people are fine. Moreover, different people have different reactions-some people have this problem after drinking one cup, but some people are fine after drinking four or five cups. Therefore, this does not mean saying goodbye to coffee, but to adjust the frequency and amount of coffee drinking according to your own situation.

  • Acid reflux patients

Some studies have found that coffee may make acid reflux symptoms worse. However, this conclusion is still controversial, and some related large-scale meta-studies have found that neither coffee nor tea (caffeine) have found a direct relationship with gastroesophageal reflux disease (GERD). Moreover, there may be many reasons for gastroesophageal reflux, and it is not particularly clear what the cause is at present. It is recommended to follow your own feelings. If your stomach function is not very good, drinking coffee has uncomfortable symptoms such as gastric acid reflux, then drink less or no coffee.

  • Hypertensive patients

However, some studies have found that some people experience a short-term increase in blood pressure after drinking coffee, usually within 3 hours. Remind everyone that for hypertensive patients who do not drink coffee often, coffee is still in moderation, and do not drink too much at one time.

  •  Pregnant women

In recent years, newer evidence has shown that drinking coffee during pregnancy may be associated with an increased risk of spontaneous miscarriage. In general, we discourage pregnant women from drinking coffee.

  • Children

Children and adolescents are still developing, and the effects of caffeine on their nervous and cardiovascular systems are not fully understood. Caffeine may disrupt sleep in children. Many coffee drinks can also cause problems with excessive sugar intake. Therefore, the American Academy of Pediatrics recommends that children and teens avoid coffee. Therefore, children should try not to drink coffee. As parents, we should also help our children control their intake of coffee, tea, and other caffeinated beverages.

Finally, I would like to remind everyone that everyone's tolerance to caffeine is different. Some people are fine after drinking several cups, but some people feel uncomfortable after drinking a few sips.

Therefore, you should also pay attention to follow your own feelings:

If you drink coffee and experience insomnia, anxiety, tremors, upset stomach, increased heart rate, headache, nausea and irritability, it means that the tolerance may be exceeded, and appropriate adjustments should be made.