1. Remember that coffee should not be taken with tea. Both tea and coffee have a refreshing effect. The interaction between the two will enhance the excitability of brain nerves, thereby affecting sleep.

2. It is best not to eat wine, coffee and wine together. It is likely to induce heart disease.

3. It is not advisable to smoke immediately after drinking coffee. Certain ingredients in coffee combine with cigarettes to produce carcinogens.

4. Coffee and cold medicine cannot be taken together. The most important thing to be careful about is ephedrine, which has the effect of stimulating nerve excitement.

5. It should not be eaten with calcium-containing foods. The tannic acid in coffee will reduce the body's absorption rate of calcium. Extended information

In addition, it is worth noting that patients with high blood pressure should avoid drinking caffeinated drinks when they are stressed at work. Because the caffeine in coffee may cause blood pressure to rise, if coupled with emotional stress, it will have a dangerous synergistic effect.

Not suitable for people

Suffering from high blood pressure, coronary heart disease, arteriosclerosis and other diseases - long-term or large-scale drinking of coffee can cause cardiovascular diseases.

Older women - coffee can reduce calcium and cause osteoporosis. After menopause, women need ten times more calcium every day.

Patients with stomach problems - excessive coffee consumption can worsen stomach problems.

Pregnant women - drinking too much coffee can cause fetal malformations or miscarriage.

Those who are deficient in vitamin B1 - Vitamin B1 can maintain the balance and stability of the nervous system, but coffee has a damaging effect on it.

Cancer patients - Excessive caffeine intake may cause cancer in normal people.

Reference: Baidu Encyclopedia-Coffee