Green Tea Health facts
Green Tea has almost immeasurable number of health benefits. Everyone knows green tea is beneficial for weight loss, it boosts metabolism, and helps lower cholesterol levels. Here are some little known health benefits facts.
- Catechins present in green tea prevents accumulation of lipoprotein on the inner wall of blood vessels. As a result, risk of heart diseases, including strokes is highly reduced. 
- Anti-oxidants present in green tea help keep the blood flowing in the brain. This particular feat of green tea helps preventing neurodegenerative diseases such as Alzheimer's and Parkinson's disease. [2, 3]
- It sounds almost believable to hear that green tea can be an influential fluid in treating cancer. Polyphenols present in this tea have been known to decrease tumor growth.
Additionally, statistics show countries with high green tea consumption rate to have lower cancer rates. Green tea is known to have positive impacts on ovary, bladder, breast, prostate, skin and colorectal cancer. 
Green tea provides better energy than coffee
Green tea, being a caffeinated drink, helps to stay awake, alert and active. Yet in a manner that is more effective than coffee.
A cup of coffee is estimated to contain about 95 mg of caffeine while a cup of green tea contains approximately 25 mg only.
Despite the significant difference, green tea is a better energy booster because it is rich is anti-oxidants, polyphenols and catechins that contribute to increased energy expenditure and fat oxidation. 
Green tea is not that different, it is just unoxidized
Green tea is extracted from the leaves of Camellia sinensis, the same plant used to produce other teas such as black, white and oolong tea. What makes its different from rest of the teas is the production mechanism.
- Black tea is completely oxidized tea.
- Oolong tea is partially oxidized tea.
- Green tea fully unoxidized tea.
Green tea, being completely unoxidized, contains the highest amount of antioxidants and other nutrients than teas that are fully or partially oxidized. However, bottled green teas you find on the market have very less antioxidants as compared to the home-brewed teas.
3 cups of green tea for a day is enough
Green tea is highly beneficial, we all know that. But, contrary to the popular belief, you don’t need to chug gallons or even quarts of green tea a day to get all the health benefits. Studies have shown that 3 cups of a green tea a day is more than sufficient for you to receive maximum amount of benefits. 
Green tea does have a slight con
Although, green tea is given Generally Recognized as Safe "GRAS" status by American Food and Drug Administration (FDA), there are some health issues that may arise with consumption of green tea.
Upset stomach, sleep problems, anxiety, premature delivery, miscarriage, etc. are some problems that heavy green tea drinkers might face. While people under any kind of medication may also want to consult their doctor as components in green tea may interact with medicinal components.
Does green tea really cause iron deficiency?
Many early researchers claimed that drinking green tea hindered our body system of absorbing iron from food, causing iron deficiency in our body. 
However, recent studies have proved that drinking green tea has no association with absorption of iron level in healthy individual, individual with iron deficiency and pregnant women with iron deficiency. [8, 9]
Green tea consumption in the U.S.
Approximately 158 million Americans drink tea every day. According to the 2014 census, that amounted to 80 billion servings of tea, or more than 3.60 billion gallons.
The reports also showed that 15% of total tea consumed was green tea in 2014. That's 15% of 3.6 billion gallons. Additionally, import of green tea in the US has increased by 60% over a decade.