Should not drink tea right after eating rice, why?

Mar 25, 2022 07:24 GMT+7

There are many studies on the benefits of green tea (Camellia Sinensis L.), two groups of extracts that are commonly studied: catechins and caffeine.

Catechin includes: epicatechin, epicatechin gallate (ECG), epigallocatechin gallate (EGCG). The combination of caffeine and catechin-polyphenols has been studied to have an impact on maintaining a healthy body weight. These two groups of substances affect thermogenesis and fat oxidation.

Thermogenesis and fat oxidation. The catechins in green tea inhibit the enzyme catechol Omethyltransferase (COMT) present in most tissues, which reduces catecholic compounds similar to norepinephrine (NE).

Norepinephrine (NE) itself is not reduced through inhibition from the COMT enzyme, from which the sympathetic nerve system (SNS) is stimulated by the presence of norepinephrine (NE), acting on β-adrenoceptors and increases thermogenesis and fat oxidation.

Green tea has many health benefits.

MSc Phan Ngoc Huy, Department of Aesthetics and Dermatology, Ho Chi Minh City Hospital of Dermatology, said that using a cup of tea in the morning helps to increase concentration and calm, through the impact of two groups of substances in tea, namely caffeine. and L-theanine. However, Master Huy also points out the do’s and don’ts when drinking green tea.

10 things to avoid when drinking green tea

Drink green tea after eating: Green tea can affect the digestion of food, so it is advisable to avoid using this drink after a meal to reduce the absorption of some essential substances for the body. Tannin compounds in green tea reduce the absorption of iron (non-heme), catechin (EGCG) through binding with trace elements (such as iron, copper and chromium) also reduce the body’s ability to absorb body.

Some trials have shown that tea should be used 1 hour after a meal to limit the reduction of iron (non-heme) and trace elements absorption.

Drinking green tea when hot: High temperature not only loses the taste of green tea but also harms your stomach and throat. It is best to use warm green tea.

Drink tea on an empty stomach: Green tea contains powerful antioxidants and polyphenols that help increase stomach acid production and affect digestion. So, ideally, drink green tea between meals.

Add honey to green tea: The nutrients in honey can be destroyed when put in a pot of boiling green tea. So let the tea cool a bit then we can add lemon, honey to make the green tea more delicious.

Taking medicine with green tea: This can be harmful because the chemicals in the medicine mix with green tea to form an acidic solution. Therefore, you should only take the medicine with plain water.

Overconsumption: Green tea contains caffeine. Drinking too much caffeine during the day can cause headaches, fatigue, lethargy, anxiety, and irritability. In addition, large amounts of green tea can also reduce iron absorption in the body. So let’s limit our intake to about 2-3 cups of tea per day.

Soaking green tea for too long: This action does not increase the amount of nutrients from the tea leaves, on the other hand, it also makes the tea taste more bitter.

Use a lot of artificial flavoring: Manufacturers tend to add more flavorings to make green tea more appealing. However, it is best to use natural green tea to get the maximum benefit from this drink.

Using a lot of tea at the same time: With the thought that using two green tea bags at the same time will help consume more energy and lose weight better, but that means it can cause digestive disorders and increase the amount of acid in the body. stomach.

Drink green tea before bed: The caffeine in tea may affect sleep, through its effects on adenosine receptors – a substance that affects sleep, memory and learning. To avoid insomnia, the use of tea should be about 6 hours away from night sleep.

Khanh Chi