Aging is a natural law. Reasonable health care and rehabilitation measures can delay aging and extend life span. However, in addition to natural disasters, man-made disasters and accidents, humans are more likely to suffer from various diseases, thus failing to achieve the goal of extending life span. For example, cardiovascular and cerebrovascular diseases, cancer, and diabetes are known as the three major killers of human health and longevity.
                                                                                                         original="http://www.chadaowang.com/file/upload/201606/19/01-50-34-56-42.jpg" alt="600-3" width="600" height="400" />

Experts conducted a survey on the cognitive status of people over 70 years old. It was found that 70% of people said they drank at least two to three cups of green tea every day, and among these people, the prevalence of Alzheimer's disease was the lowest. On the contrary, among those who drank one cup a day or did not drink green tea at all, more people suffered from Alzheimer's disease, about half as much as the former.

Researchers pointed out that elderly people who drink more than three cups of green tea a day are not only less likely to suffer from Alzheimer's disease, but their overall memory, attention and language ability are also significantly higher than those who usually drink less or no green tea. Precisely because Japan is a nation that likes to drink green tea, surveys show that the incidence of Alzheimer's disease in Japan is significantly lower than that in Europe and the United States.

Why does this happen? Researchers explained that this has a lot to do with the catechins contained in green tea. Catechin is the main component of tea polyphenols in green tea. It is also an important antioxidant that can scavenge harmful free radicals in the human body, thereby having a strong effect on preventing and improving the symptoms of Alzheimer's disease.

More importantly, tea polyphenols are water-soluble substances and have strong diffusion ability. Therefore, the catechins in it can smoothly pass through the human body's physiological barrier and reach the central nervous system and other organs throughout the body, which strengthens its preventive effect on Alzheimer's disease.

However, according to expert analysis, although black tea and oolong tea also belong to the tea category, they do not have the same effect in preventing Alzheimer's disease as green tea.

Cardiovascular and cerebrovascular diseases The main cause of cardiovascular and cerebrovascular diseases is atherosclerosis. The causes of arteriosclerosis include high blood pressure, blood lipid disorders, obesity, smoking, etc. Among them, the most important one is hyperlipidemia caused by blood lipid disorders. Long-term hyperlipidemia can cause stroke, coronary heart disease, myocardial infarction, sudden death, etc. It is also an important risk factor for the occurrence of hypertension and diabetes. Hyperlipidemia can also lead to fatty liver, cirrhosis, cholelithiasis, pancreatitis, fundus hemorrhage, blindness, peripheral vascular disease, claudication, hyperuricemia, etc.

Cancer When the human body gradually ages, the immune function declines. Cells in the body mutate and divide continuously without the control of the body, eventually forming cancer. Diabetes Diabetes is known as the "silent killer" with high incidence, high complications, and high secrecy. It is the "mother of all diseases" and is extremely harmful.

Tea polyphenols are the essence of tea and have been recognized by scientists from all over the world since the 1980s. Tea polyphenols can regulate blood lipids and prevent and alleviate atherosclerosis by increasing high-density lipoprotein cholesterol and inhibiting the uptake of low-density lipoprotein cholesterol by cells. Tea polyphenols can enhance the toughness of capillaries, enhance vascular resistance, and protect cardiovascular and cerebrovascular vessels. Tea polyphenols can bind to lipids and excrete them from the body through feces, thereby regulating blood lipids. Tea polyphenols can promote the reverse transport of high-density lipoprotein cholesterol to the liver, where it will be excreted from the body through metabolism, thus regulating blood lipids.

Tea polyphenols can scavenge free radicals, block lipid peroxidation, and increase enzyme activity, thus playing an auxiliary role in anti-mutation and anti-tumor. Tea polyphenols can inhibit the covalent binding of carcinogens to cellular genes and prevent single-strand breaks of genetic genes, thus having a good anti-carcinogenic effect. Tea polyphenols can inhibit and block the nitrosation process in the human body. According to relevant data, tea polyphenols have preventive and auxiliary therapeutic effects on various cancers such as gastric cancer and intestinal cancer.

Tea polyphenols have a coordinating effect on human body sugar metabolism, and have a certain effect on lowering blood sugar and preventing diabetes. Nowadays, high-tech means can be used to extract tea polyphenols, while also removing caffeine and intestinal irritating ingredients, and processing them into convenient tablets or capsules, making tea health care simpler, safer and more effective.

People often say: "Time makes people grow old, and years make people's hair whiter." Exploring the mystery of aging, paying attention to health preservation, and looking for good medicines to prolong life have always been subjects of human research. Everyone hopes to be healthy and live a long life. The beautiful blueprint of "a hundred and twenty years at the top, a hundred years at the middle, and eighty at the bottom" described by the ancients is the highest ideal for human beings to pursue longevity.

(Editor: Li Fei)

Previous：A cup of ginger tea every day will ensure your longevity!

Next：Recommend 11 fire-reducing teas, best to drink when the liver is hot