There are several taboos when drinking coffee.

1. Iron should not be taken with tea, milk and coffee. Because the milk contains high phosphorus, it can affect the absorption of iron. Tannic acid in tea and coffee reduces iron absorption by 75%. It is appropriate to send the service with lukewarm water.

two。 The tannic acid in tea and coffee reduces calcium absorption. Therefore, the best time to drink tea and coffee is to choose between two meals.

3. Caffeinated drinks and foods can cause nausea, vomiting, headache and rapid heartbeat after being consumed by pregnant women. Caffeine also enters the fetus through the placenta, affecting fetal development.

4. Many doctors believe that pregnant women drink 1 to 2 cups of coffee, tea or carbonated drinks a day (6 to 8 ounces each), which will not affect the fetus. But as a precaution, pregnant women had better forbid it. Caffeine can lead to an increase in the abortion rate, so you should drink non-caffeinated drinks.

5. People who want to lose weight should not drink too much coffee. Common coffee companions contain more milk, sugar and fat, coffee itself may stimulate gastric juice secretion, enhance food digestion and absorption, not only can not lose weight, but also make people fat.

6. Coffee is not suitable for children. Caffeine can excite the central nervous system of children, interfere with their memory and cause ADHD.

7. Strong tea, coffee and carbonated drinks are also risk factors for digestive tract ulcers.

8. The following five types of people are not suitable for drinking coffee:

(1) suffering from hypertension, coronary heart disease, arteriosclerosis and other diseases-long-term or large amounts of coffee drinking, can cause cardiovascular disease.

(2) Coffee can reduce calcium and cause osteoporosis in elderly women. After menopause, women need to add ten times the amount of calcium every day.

(3) patients with stomach disease-drinking too much coffee can cause stomach disease to worsen.

(4) pregnant women-drinking too much coffee can lead to fetal malformation or miscarriage.

(5), vitamin B1 deficiency-vitamin B1 can maintain the balance and stability of the nervous system, and coffee has a destructive effect on it.