Tea contains nearly 500 components, mainly including alkaloids such as caffeine, theophylline, theobromine, and choline, phenolic derivatives like flavonoids, catechins, and anthocyanins, as well as various vitamins, amino acids, and minerals. These substances work together, playing a significant role in preventing and treating diseases in the human body. No wonder people say, "Better to go without food for a day than without tea for a day." Specifically, tea mainly has the following health benefits.
1. Boosting Alertness and Relieving Fatigue
The alertness-boosting effect of tea is primarily due to substances like caffeine, theophylline, and theobromine. These alkaloids stimulate the declining central nervous system of the brain, prompting it to shift from sluggishness to excitement, helping to concentrate and think clearly, thus achieving the effect of refreshing the mind and calming the spirit.
2. Lowering Lipids, Aiding Weight Loss, and Cutting Greasiness
The Tang Dynasty's "Compendium of Materia Medica" records that tea "causes thinness with long-term consumption." Caffeine and flavanol compounds in tea can promote digestive tract motility, aiding food digestion. Choline and folic acid in tea soup also have the effect of regulating fat metabolism, enhancing the stomach's ability to break down fat. While aiding digestion, tea can also protect the gastric mucosa, preventing bleeding caused by gastric ulcers, offering good protection for the stomach and intestines.
3. Preventing Tooth Decay and Bad Breath
Tea contains a relatively high amount of fluoride. These fluoride-containing substances can kill bacteria lingering in tooth crevices, helping to prevent tooth decay, with effects far superior to fluoride compound preparations. Tea can also inhibit the loss of calcium in the human body, benefiting the prevention of dental caries and protecting and strengthening teeth. Tea can also eliminate residual proteins in the oral cavity, thereby freshening breath and eliminating bad breath.
4. Diuretic and Fatigue-Relieving
Purine compounds in tea such as caffeine, theophylline, and theobromine can stimulate the kidneys, prompting urine to be quickly expelled from the body, increasing the kidney's filtration rate, and reducing the retention time of harmful substances in the kidneys, thus protecting and strengthening the kidneys. Caffeine can also remove excess lactic acid from urine, helping the body eliminate fatigue more quickly.
5. Anti-inflammatory and Antibacterial
Catechin compounds in tea have significant inhibitory effects on various pathogenic bacteria such as Salmonella typhi, Salmonella paratyphi, Staphylococcus aureus, Streptococcus pyogenes, and dysentery bacilli. Tea polyphenols also have strong astringent effects, showing clear efficacy in reducing inflammation and stopping diarrhea.
6. Anti-cancer and Boosting Immunity
Tea polyphenols in tea, mainly catechin compounds, can block the synthesis of various carcinogens like nitrosamines in the body and directly kill cancer cells, enhancing the body's immune capacity. According to relevant data, drinking tea is beneficial for the prevention and adjuvant treatment of various cancers such as gastric and intestinal cancer.
7. Delaying Aging
Tea polyphenols in tea have strong antioxidant and physiological activity, acting as scavengers of free radicals in the human body. They can effectively block lipid peroxidation reactions and clear active enzymes. Their anti-aging effect is 18 times stronger than that of vitamin E. Therefore, drinking tea year-round can lead to a light, healthy body and longevity.
8. Inhibiting Cardiovascular Diseases
Catechins in tea can prevent the accumulation of cholesterol and other neutral fats in the blood and liver, thereby preventing arteriosclerosis and liver cirrhosis.
9. Lowering Blood Sugar and Treating Diabetes
The main reason tea can help treat diabetes is the tea polyphenols it contains. These substances can maintain the normal toughness of microvessels and reduce their permeability, allowing diabetic patients with fragile microvessels to gradually restore microvessel normality. This is greatly beneficial for treating diabetes.
10. Preventing Radiation
The reason tea drinking can resist damage from radioactive substances is mainly due to its catechins. Additionally, substances like lipopolysaccharides and amino acids in tea can also resist damage from radioactive substances. Those who usually work in high-radiation environments can drink more tea to resist radiation and reduce harm to the body.
11. Beauty Care and Maintaining Youthfulness
As time passes and environmental damage increases, skin often experiences common problems like roughness, wrinkles, and acne. Tea is rich in vitamins, minerals, and antioxidants. These substances have effects such as moisturizing the skin, darkening hair, and improving complexion, making one full of vitality and vigor.