Most of the time we throw away the overnight tea directly, especially in summer when the temperature is high, the tea is easily contaminated by bacteria, becomes moldy, goes rancid, and causes diarrhea, so it is better not to drink overnight tea at this time. Overnight tea: Especially tea that has gone off-flavor. Even if you can't taste the off-flavor, a large number of bacteria are likely to breed and multiply in it.

Why can’t you drink overnight tea

1. Tea contains tea polyphenols, which are easily oxidized in air and water into a brown gelatinous substance - tea rust. Tea rust contains pickaxe, lead, iron, arsenic, mercury and other substances. The longer the tea that has not been finished or left in the cup for a long time, such as overnight tea, is exposed to the air, the more tea polyphenols will be oxidized into tea rust. Tea rust enters the human body and combines and precipitates with proteins, fats and vitamins in food, hindering the absorption and digestion of nutrients.

2. Once these oxidative substances enter the human body, they can also cause inflammation, ulcers, necrosis and other diseases in the kidneys, liver, stomach and other organs. Therefore, tea cannot be drunk overnight, and tea sets should be cleaned frequently.

3. The temperature is high in summer, and the tea is prone to rancidity and odor. If it is left aside for more than 24 hours, it is best not to drink it, otherwise it will cause diarrhea.

4. Overnight tea has been used for too long, and most of its vitamins have been lost, and the protein, sugar, etc. in the tea have become nutrients for the reproduction of bacteria and mold, so it is not suitable to drink.

Alternative effects of overnight tea

1. Anti-cancer and antioxidant

Tea water will turn reddish-brown if left for a long time. This is due to the oxidation of tea polyphenols into reddish-brown tea pigments. Research shows that tea polyphenols and tea pigments have strong anti-cancer and antioxidant effects.

2. Stop bleeding

Overnight tea is rich in acid, which can prevent capillary bleeding. If you suffer from stomatitis, tongue carbuncle, eczema, bleeding gums, etc., you can use overnight tea to rinse your mouth. It can also be used to bathe in sores, abscesses and skin bleeding.

　3. Improve eyesight

The polyphenols in overnight tea have antibacterial and anti-inflammatory effects. If your eyes appear red, you can wash them with overnight tea several times a day.

4. Relieve itching

Use warm overnight tea to wash your hair or wipe your body. The fluorine in the tea can quickly relieve itching and prevent and treat eczema.

5. Hair growth

Washing your hair with overnight tea also has the effect of growing hair and eliminating dandruff. If you feel your eyebrows are sparse, you can use a brush dipped in overnight tea to brush your eyebrows every day. Over time, your eyebrows will naturally become thicker and brighter.

6. Fix teeth and clean teeth

After the fluoride in the tea and the enamel of the teeth are calcified, it will enhance the resistance to acidic substances and reduce the occurrence of tooth decay; fluoride can also eliminate dental plaque. It is best to rinse your mouth with tea two or three minutes after meals.

7. Eliminate bad breath

Tea contains essential oils and has a fragrant smell. Gargle a few sips of overnight tea before and after brushing your teeth in the morning or after meals to freshen your breath. Gargling with tea regularly can eliminate bad breath.

8. Sun protection

If your skin is sunburned, you can wipe it gently with a towel dipped in overnight tea. Because tannic acid has an astringent effect on the skin, the flavonoid compounds in tea also have anti-radiation effects.

9. Remove fishy smell and greasiness

Overnight tea also has a strong effect of removing fishy odor and grease. Use it to wash your hands after eating shrimps and crabs to feel refreshed.

10. Laxation

After getting up in the morning, drink a cup of overnight herbal tea brewed last night, which has the effect of laxative, refreshing and fat reduction.

After reading this article, I found that overnight teais of such great use, so in the future wenever be in a hurry to pour overnight tea, we can give full play to its function.

(Editor: Guan Aihua)

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