Doctor Pham Anh Ngan , University of Medicine and Pharmacy Hospital, Ho Chi Minh City - Branch 3, replied: Tea is a familiar drink that has existed since ancient times in most countries and continents. Depending on the region, there will be different types of tea made from different herbs and the corresponding time of day to drink tea.
During afternoon tea, you can use some types of tea such as flower tea such as chrysanthemum tea, rose tea, lotus heart tea,... with moderate water, to help calm the mind and fall asleep easily.
A cup of tea (about 230 ml) contains 30-50 mg of caffeine, packaged tea will contain more caffeine than loose leaf tea, green tea contains about 60-70 mg of caffeine.
According to the US Food and Drug Administration (FDA), a healthy person can drink up to 400 mg of caffeine in a day.
Depending on the body, everyone's tea drinking is not the same. Accordingly, morning tea time, need to be alert and refreshed, can choose teas such as green tea, oolong tea, longjing tea, lotus tea... Afternoon tea time can use some types of tea such as flower tea such as chrysanthemum tea, rose tea, lotus heart tea... with moderate water, help calm the mind, easy to fall asleep.
Tea also helps aid digestion, however because tannins in tea can precipitate protein, tea should be consumed 20 minutes after meals.
It should also be noted that people with anemia who need iron supplements should drink tea between meals and between times they take medication because tea limits the absorption of iron in the body.
Some leaf teas can be diuretic, so be careful to limit drinking them in the late afternoon or evening.
You should not completely replace filtered water with leaf tea. You need to drink enough water during the day.
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