
Generally, you can drink black tea, which is good for the body, because black tea is warm in nature and taste, warms the stomach and stops vomiting, warms the middle and dispels cold, and warms the middle and strengthens the spleen. It has a certain therapeutic effect on indigestion, and can also relieve physical fatigue and refresh the mind. It can replenish water for the body and has the effect of urination.
If you drink a lot of black tea every day, it may cause gastrointestinal discomfort, excessive excitement and other side effects. It may cause diarrhea, abdominal pain, and other symptoms. It may also cause excessive excitement of the body and affect sleep. Drinking black tea for a long time is not good for your health.
You can drink black tea in moderation during menstruation. According to Chinese medicine, green tea is cool, black tea is hot, and flower tea is between the two, which is neutral; generally, as long as adults drink, all kinds of tea will not cause negative effects. Women drink black tea in moderation during menstruation to regulate qi and menstruation.
It can only be said that you can't drink too much, and the time should be more than half an hour away from the meal time, especially after a meal. If you drink tea immediately, tea polyphenols will hinder the decomposition of iron in the body and easily lead to iron deficiency anemia. Therefore, some people believe that women should not drink tea during menstruation, pregnancy and lactation, otherwise it is easy to cause iron deficiency anemia.
Drinking tea during menstruation, especially strong tea, can induce or aggravate menstrual syndrome. Medical experts have found that compared with non-tea drinkers, tea drinkers have a 2.4 times higher chance of developing menstrual tension, and those who drink more than 4 cups of tea a day have a 3-fold higher chance.
Drinking black tea in winter is good, but we remind you that black tea is not suitable for drinking cold. Drinking cold water will affect the warming effect of the stomach, and it will also reduce the nutritional content due to long storage time. It is best to use an open cup to brew black tea. Don't wait until the water in the cup is finished before adding hot water. It is best to store water when there is about 1/3 of the water left to dilute the tea leaves and keep the temperature and concentration of the tea appropriate. Each cup of black tea tastes best when it is stored 3 times.
In fact, you can drink some black tea during menstruation, which is good for women who are afraid of cold, but if you have a lot of menstrual flow every month and have a hot body, you should not drink black tea. Also, be careful not to brew black tea too strong, because drinking too much or too strong will cause iron deficiency anemia during menstruation.

1. Control the total amount and concentration
Do not exceed 4 cups per day, and avoid long-term soaking (3-5 minutes is recommended) to reduce the precipitation of tannic acid and caffeine.
2. Reasonable time combination
Drinking in the morning or afternoon can refresh you, and avoiding drinking 3 hours before bedtime can help prevent affecting sleep.
3. Adjustment for special groups
Pregnant/breastfeeding women: Daily caffeine intake is recommended to be less than 200 mg (about 2-3 cups of light tea).
During medication: Avoid taking medicine with tea to avoid affecting the efficacy of the medicine.
If you are worried about the impact of caffeine, you can choose:
Light tea or cold brew tea: The Cold brewing method reduces caffeine release.
Pair with milk or plant milk: casein in milk can bind tannic acid to reduce gastrointestinal irritation.
Alternate with non-caffeinated drinks, such as flower and fruit tea, barley tea, etc., to reduce the risk of caffeine accumulation.
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