Tea Knowledge: 4 Side Effects of Drinking Black Tea
Black tea has many benefits, but it also has side effects. Drinking strong black tea can dilute stomach acid, hinder iron absorption, cause constipation, and increase blood pressure and heart burden. Tea lovers should be aware of these potential risks....
Tea News · May 13, 2026
Brew a Good Pot of Tea to Stay Healthy
According to modern scientific analysis, tea contains many elements essential to human physiology. It includes caffeine, which stimulates the nervous system and promotes blood circulation; tannic acid, which aids digestion and detoxification; various vitamins such as A, B, C, D, and P that support o...
Tea News · Apr 27, 2026
Peel off the outer layer of tea and see what's inside
Tea contains over 600 chemical components, which determine its aroma, taste, color, and health benefits. The main functional compounds include tea polyphenols (accounting for about one-third of the dry weight of fresh leaves, primarily responsible for antioxidant properties and astringency , caffein...
Tea News · Apr 12, 2026
20 Precautions for Drinking Tea
While tea is a healthy beverage, its consumption should be tailored to individual health conditions. Key precautions include avoiding tea when having a fever, as caffeine can raise body temperature and reduce drug efficacy. Those with liver issues, nervous exhaustion, or ulcers should drink cautious...
Tea News · Apr 07, 2026
Why "Do Not Drink Tea on an Empty Stomach"?
The article explains why drinking tea on an empty stomach is harmful. It states that tea contains caffeine, which, when consumed without food, can lead to symptoms like heart palpitations, frequent urination, and impaired vitamin B1 absorption. This practice, known as drinking 'hollow tea,' can dilu...
Tea News · Apr 07, 2026
Do You Know About the Bitterness and Sweet Moistness of Tea?
Tea's characteristic bitterness and astringency come from compounds like caffeine and catechins (tea tannins . However, these initial sensations transform, leading to the prized experiences of sweetness (回甘 and saliva-inducing freshness (生津 . This transformation is key to tea's appeal. The interact...
Tea News · Apr 05, 2026
Experts Remind: Drinking Strong Tea for Refreshment Has Four Major Health Disadvantages
Many people enjoy drinking strong tea to refresh themselves, but experts warn that this habit can be harmful to health. Strong tea contains high levels of caffeine, which can lead to insomnia, rapid heartbeat, and negatively affect individuals with heart conditions. It also stimulates excessive stom...
Tea News · Feb 26, 2026
Why Do We Think Tea Is Bitter?
We perceive tea as bitter primarily because tea leaves contain bitter-tasting compounds. The main substances responsible for this bitterness are alkaloids such as caffeine, theobromine, theophylline, as well as flavonoids, tea saponins, certain bitter amino acids, and some flavanols. When a tea tast...
Tea News · Feb 09, 2026
The Astringency, Bitterness, and Sweet Aftertaste of Tea Soup
The article explores the complex flavors of tea, explaining that bitterness and astringency are inherent qualities originating from compounds like caffeine and tea tannins. It details how these initial sensations transform into the prized sweet aftertaste (hui gan and saliva-inducing effect (sheng...
Tea News · Jan 07, 2026
8 Types of People Who Should Not Drink Tea Frequently
While drinking tea offers many benefits, it can have adverse effects for certain individuals. For these groups, limiting tea consumption may be advisable. Tea contains compounds such as tannic acid and caffeine, which can exacerbate conditions like constipation, insomnia, anemia, calcium deficiency,...
Tea News · Dec 19, 2025