We all know that drinking tea is good on human body, especially for women, because tea can help them lose weight and beautify the skin. However, if you drink tea at wrong time, it will cause adverse impact on the body. Generally speaking, if women are during the following five stages, they should better not drink tea.

1. Menstrual period
When the menstrual period comes every month, a large number of iron will be consumed in the body, so women have to supplement a lot of iron-rich fruits and vegetables during this period. However, if they have the habit of drinking tea after eating the meal, the tannic acid contained in tea will prevent the absorption of iron by the intestinal tract, which may greatly reduce the degree of iron absorption.

2. The period of pregnancy
If women are during the pregnant period, they also should not drink tea. In general, the concentration of caffeine in tea is up to 10%. It will increase the urination of pregnant women, speed up their heart rate, and cause burden on the heart and kidney of pregnant women. More seriously, it may even result in toxemia of pregnancy. As a result, pregnant women should better drink less tea.

3. The period about to give birth
If the pregnant women is going to give birth, they should not drink too much tea. Otherwise, the caffeine contained in tea will make the body excited and then lead to insomnia. If the pregnant women have not got enough sleep before giving birth, it may lead to exhaustion at the puerperal time, or even result in dystocia.

4. Lactation period
During the lactation period, if the mothers drink a lot of tea, the caffeine contained in tea will penetrate in the milk and cause indirect influence on the babies, which is very harmful to the physical health of the babies. What's more, the large content of tannic acid contained in tea will be absorbed by the mucosa membrance, which may affect the blood circulation of the mammary gland and inhibit the secretion of breast milk. As a result, it may lead to the deficiency of breast milk.

5. Menopause
If women are at the menopausal period, they are likely to suffer from some common symptoms such as dizziness, fatigue, rapid heartbeat, bad temper, and poor sleep quality, and so on. If they still drink too much tea during this period, it will aggravate these symptoms and cause harms on their body.