Green tea comes from the Camellia Sinensis plant, the same plant that produces black tea and oolong tea. Different types of processing determine the tea classification. Green tea does not undergo fermentation, and as a result it contains the highest antioxidant levels of the three types of tea.
One of the more powerful compounds in green tea is the antioxidant Epigallocatechin Gallate (EGCG), which has been studied to treat various diseases and may be one of the main reasons green tea has such powerful medicinal properties.
- If you want to feel better, lose weight and lower your risk of chronic diseases, consider making green tea a regular part of your life.
- To minimize the amount of caffeine and tannins you consume, steep a teabag for no longer than five minutes and drinking no more than 300mg, or three to four cups, of green tea per day.
- Try to go for higher quality brand of green tea, because some of the lower quality brands can contain excessive levels of fluoride.
- Bear in mind that adding milk to your tea can reduce the antioxidant value (1).
- Everything in moderation:
- Caffeine (in excess) stimulates the central nervous system, and can trigger anxiety, insomnia, tremors, heart palpitations, loss of appetite and irritability.
- Green tea’s tannin content might make some people nauseous, and it might inhibit the absorption of iron from foods or supplements. Consult your doctor if you are not sure.
Green Tea and Cancer
It is well known that oxidative damage contributes to the development of cancer and that antioxidants can have a protective effect (1). Green tea helps reduce the risk of cancer. The antioxidant in green tea is 100 times more effective than vitamin C and 25 times better than vitamin E. This helps your body at protecting cells from damage believed to be linked to cancer.
Green tea is an excellent source of powerful antioxidants, so it makes perfect sense that it could reduce your risk of cancer, which it appears to do:
- Breast cancer: A meta-analysis of observational studies found that whomen who drank the most green tea had a 22% lower risk of developing breast cancer, the most common cancer in women (2).
- Prostate cancer: One study found that men drinking green tea had a 48% lower risk of developing prostate cancer, which is the most common cancer in men (3).
- Colorectal cancer: A study of 69,710 Chinese women found that green tea drinkers had a 57% lower risk of colorectal cancer (4).
Green Tea and Immunity
Polyphenols and flavenoids found in green tea help boost your immune system, making your health stronger in fighting against infections.
Green Tea and Cold and Flu
Green tea prevents you from getting a cold or flu. Vitamin C in green tea helps you treat the flu and the common cold.
Green Tea and Asthma
Theophylline in green tea relaxes the muscles which support the bronchial tubes, reducing the severity of asthma.
Green Tea and Stress
L-theanine, which is a kind of amino acids in green tea, can help relieve stress and anxiety.
Green Tea and Allergies
EGCG found in green tea relieves allergies. So, if you have allergies, you should really consider drinking green tea.
Green Tea and Heart Disease
Green tea helps prevent heart disease and stroke by lowering the level of cholesterol. Even after the heart attack, it prevents cell deaths and speeds up the recovery of heart cells.
Green Tea and Anti-Aging
Green tea contains antioxidant known as polyphenols which fight against free radicals. What this means it helps you fight against aging and promotes longevity.
Green Tea and Weight Loss
Green tea helps with your body weight loss. Green tea burns fat and boosts your metabolism rate naturally.
Green Tea and Skin
Antioxidant in green tea protects the skin from the harmful effects of free radicals, which cause wrinkling and skin aging. Green tea also helps fight against skin cancer.
Green Tea and Arthritis
Green tea can help prevent and reduce the risk of rheumatoid arthritis. Green tea has benefit for your health as it protects the cartilage by blocking the enzyme that destroys cartilage.
Green Tea and Bones
The very key to this is high fluoride content found in green tea. It helps keep your bones strong. If you drink green tea every day, this will help you preserve your bone density.
Green Tea and Cholesterol
Green tea can help lower cholesterol level. It also improves the ratio of good cholesterol to bad cholesterol, by reducing bad cholesterol level.
Green Tea and Obesity
Green tea prevents obesity by stopping the movement of glucose in fat cells. If you are on a healthy diet, exercise regularly and drink green tea, it is unlikely you’ll be obese.
Green Tea and Diabetes
Green tea improves lipid and glucose metabolisms, prevents sharp increases in blood sugar level, and balances your metabolism rate. Some controlled trials show that green tea can cause mild reductions in blood sugar levels. It lowers the risk of developing type II diabetes in the long term.
Green Tea and Alzheimer’s
Green tea helps boost your memory. And although there’s no cure for Alzheimer’s, it helps slow the process of reduced acetylcholine in the brain, which leads to Alzheimer’s. The bioactive compounds in green tea can have various protective effects on neurons and may reduce the risk of both Alzheimer’s and Parkinson’s, the two most common neurodegenerative disorders.
Green Tea and Parkinson’s
Antioxidants in green tea helps prevent against cell damage in the brain, which could cause Parkinson’s. People drinking green tea also are less likely to progress with Parkinson’s.
Green Tea and Liver Disease
Green tea helps prevent transplant failure in people with liver failure. Researches showed that green tea destroys harmful free radicals in fatty livers.
Green Tea and High Blood Pressure
Green tea helps prevent high blood pressure. Drinking green tea helps keep your blood pressure down by repressing angiotensin, which leads to high blood pressure.
Green Tea and Food Poisoning
Catechin found in green tea can kill bacteria which causes food poisoning and kills the toxins produced by those bacteria.
Green Tea and Blood Sugar
Blood sugar tends to increase with age, but polyphenols and polysaccharides in green tea help lower your blood sugar level.
Green Tea and Ear Infection
Green tea helps with ear infection problem. For natural ear cleaning, soak a cotton ball in green tea and clean the infected ear.
Green Tea and Herpes
Green tea increases the effectiveness of topical interferon treatment of herpes. First green tea compress is applied, and then let the skin dry before the interferon treatment.
Green Tea and Tooth Decay
Green tea destroys bacteria and viruses that cause many dental diseases. It also slows the growth of bacteria (streptococcus mutans is the primary harmful bacteria in the mouth) which causes plaque formation and is a leading contributor to cavities, tooth decay and bad breath.
Green Tea and HIV
Scientists in Japan have found that EGCG (Epigallocatechin Gallate) in green tea can stop HIV from binding to healthy immune cells.
What this means is that green tea can help stop the HIV virus from spreading.