If you have the habit of drinking green tea, congratulations on earning it! For the health of your family, you might as well develop more "tea friends" at home.
Many plant components and bioactive substances in tea can be integrated into tea after being brewed with hot water, such as polyphenols recognized as anti-inflammatory and anti-cancer.
Polyphenols in green tea account for 30% of the total weight, mainly EGCG (Chinese name: epigallocatechin gallate). This antioxidant can reduce and destroy free radicals in the body, which are the chief culprit of human aging and many diseases.
Therefore, green tea can rely on polyphenols to help resist aging and many diseases.
Green tea can reduce blood lipids, including the levels of triglycerides, low-density lipoprotein cholesterol and total cholesterol. Hyperlipidemia and thick blood are important causes of cardiovascular diseases such as coronary heart disease and stroke.
Drinking green tea regularly can reduce the risk of cardiovascular disease by 365,438+0%.
Cell damage caused by free radicals may induce cancer, and antioxidants in green tea are the bane of free radicals. It helps to reduce the risk of the following cancers. For example, the study found that drinking green tea regularly can reduce the probability of rectal cancer, prostate cancer and breast cancer by 42%, 48% and 20-30% respectively.
Tip: Some studies say that pouring milk into green tea may reduce the content of antioxidants, so it is best not to drink milk with green tea.
The caffeine in green tea is not as much as that in coffee, but it is enough to play a positive role. Caffeine can block the inhibitory neurotransmitter adenosine in the brain, increase the discharge of neurons and increase the concentration of neurotransmitters such as dopamine and norepinephrine.
In this way, the signal transmission between nerves will be faster, people's reaction time will be shorter, their memory will be better, and their mood and vigilance will be better.
In addition to caffeine, green tea also contains L- theanine, which can penetrate the blood-brain barrier, increase the activity of inhibitory neurotransmitter GABA, increase the production of dopamine and alpha brain waves, and thus improve mood.
L- theanine and caffeine work together to strengthen the brain.
As mentioned above, green tea can not only strengthen the brain in the short term, but also help to reduce the risk of neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease in the old age in the long term. This is also attributed to catechins contained in green tea.
Green tea contains active ingredients that can accelerate metabolism and promote fat burning. Caffeine can mobilize fatty acids in adipose tissue and use it as energy, which can enhance physical fitness and make people more athletic.
Studies have found that catechins in green tea can inhibit the growth of some bacteria and viruses, thus preventing infection. For example, it can inhibit the survival of Streptococcus mutans, which is the main bacteria causing tooth decay. From this perspective, green tea can also promote oral health and prevent tooth decay.
Green tea contains active ingredients that can improve insulin sensitivity. According to a research review involving 28,6701person, green tea will reduce the risk of type 2 diabetes by 18%.
People are inherently mortal, but because green tea can reduce cardiovascular diseases, cancer and other major fatal diseases, it can make people live longer to some extent.
A Japanese study involving 1400 1 person found that in the six-year study, the death rate of people who regularly drink green tea was 76% lower than that of those who did not drink green tea.
"Ask the doctor"-a team of doctors from Xi 'an, an ancient city, to share scientific and practical health knowledge for you.