Green tea is prepared from the un-oxidized and unfermented leaves of Camellia sinensis and native to China and India. It is also well recognized in western countries because of its incredible health benefits and antioxidant effects. Although, green tea is famous for its health benefits, only about 20 % of people fond of tea are drinking green tea, whereas about 78 % people take black tea on a regular basis. Benefits of green tea over black tea are due to the minimal oxidation processing, so it aids in preservation of antioxidants and bio-chemicals present in tea plants. Epigallocatechin gallate (EGCG) is the phytochemical, which is responsible for its anticancer properties. EGCG is a more potent antioxidant than Vitamin C.
Health Benefits of Green Tea
Green tea keeps alert and anxiety free
Green tea improves brain function due to the synergistic effect of caffeine and L-theanine, so it makes a person more active and alert. Although activeness of the brain is due to the caffeine content, but in addition to caffeine, it also contains L-theanine, an amino acid that can cross the blood brain barrier. It has anti-anxiety effects on the brain by enhancing the alpha waves and balancing dopamine secretion. During exams, we suffer from stress and want to be awake without anxiety and stress, so green tea can help you to keep alert as well as anxiety free.
Green tea boosts metabolic rate and burns fats
Green tea increases fat oxidation by 17%, a study concluded.  However, other studies have contrary results, but almost all studies agreed that it increases the metabolic rate, although the percentage of its effect could vary.
It has no calories, so it can be taken during a weight loss program. It will aid to achieve your weight loss goal by enhancing metabolic rate and fat burning incorporating with other remedies or exercises.
Reduces the risk of heart diseases
Green tea is loaded with bio-active compounds like catechins and flavonoids aids in reducing the risk of heart diseases due to their potent antioxidant activity. These compounds help to reduce the effects of free radicals and protect the blood vessel walls from accumulation of cholesterol plaque. Furthermore, green tea is also beneficial in high blood pressure due to its relaxing effects on the blood vessels, so it makes the blood flow easier and reduces the elevated blood pressure.
Fights off cancers
Green tea fights against cancers of several origins, including breast cancer, esophageal cancer, cancers of lungs, skin, colon, liver, pancreas, ovaries, prostate, etc. Although the cause of cancer has been yet unknown, but it is believed that cancer develops due to increased oxidative stress in the body. Green tea due to its potent antioxidant effects reduces the oxidative stress in the body, so it helps in prevention and treatment of cancerous diseases.
Green tea as an Immunity booster
Green tea enhances immune system due to its antioxidant and immunomodulator effects. In addition to these effects, the catechins, a phytochemical present in green tea inhibits the bacterial and viral growth in the body, which aids to reduce the tendency of various infections, especially infections of the oral cavity (mouth).
Lowers the risk of Parkinson’s disease and Alzheimer’s disease
The consumption of two cups of green tea daily reduces the risk of the brain diseases, especially Parkinson’s disease and Alzheimer’s disease. Phytochemicals present in green tea arrest the degenerative processes linked with aging and reduces the risks of dementia. Due to stimulating effect on dopamine, it prevents the occurrence of Parkinson’s disease and protects neurons that secrete dopamine.
Helps in diabetes mellitus
About 300 million people are suffering from the lifestyle disease named diabetes mellitus type two. In various research studies, it is found that green tea reduces insulin resistance in the cells, so aids other medicines to reduce blood sugar levels effectively. It also stimulates panaceas functions and improve uptake of insulin by cells by increasing sensitivity towards insulin.
A quick list of other benefits of green tea
- It reduces bad breath.
- It prevents tooth decay.
- It aids in regulating metabolic rate, liver function and blood sugar level.
- It lowers low-density lipoprotein (bad cholesterol).
- It may also help in alleviating pain and inflammation of joints.