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| Photo: Flickr user Mike |
As we already know the green tea has many health
benefits. Also it may help prevent against many types of cancer. For example,
the cancer rate is lower in countries such as Japan than in U.S. despite there
are more cigarette smokers. The studies have shown that polyphenols in tea,
especially in green tea, help kill cancerous cells and stop them from growing.
Bladder Cancer
In one study the people with and without bladder
cancer were compared. The researchers found that bladder cancer were less
likely in those women who drank black tea and powdered green tea. The follow-up
study revealed that people with bladder cancer, especially men, who drank green
tea had a better 5-years survival rate.
Breast Cancer
The studies in animal and test tube show that
polyphenols, contained in green tea, slow down the growth of breast cancer
cells. One study of 472 women with various stages of breast cancer found that
the least spread of cancer had those women who drank the most green tea. It was
particularly seeing in premenopausal women who had early stages of breast
cancer. Women with late stages had little or no effect from drinking green tea.
The women with early stage of this disease should
drink at least 5 cups of green tea daily to see the effect and prevent against
the cancer coming back. In another study, the researchers found that women
under 50 who drank 3 or more cups of tea every day had 37% less chance to develop
breast cancer.
Ovarian Cancer
The clinical study was done in people with ovarian
cancer in China. The results shown that women, who drank at least one cup of
tea a day, lived longer with this disease than those who didn’t. Otherwise, in
the other studies wasn't found any positive effects.
Colon or Rectal Cancer
The studies with those types of cancer had quite
conflicting results. Some studies found decreasing risk, while others show
increasing risk in colon or rectal cancer. Women who drink at least 5 cups of
green tea per day had lower risk of this disease. But there was no effect for
men. However, it is needed more research before recommending the green tea as
prevention of colorectal cancer.
Esophageal Cancer
The researches with this type of cancer also show
conflicting results. Actually, the hotter and stronger the tea is, the greater
the risk. More studies are needed before recommending the green tea as
prevention for esophageal cancer.
Lung Cancer
There was also conflicting results. More research
is wanted to recommend green tea for prevention of lung cancer.
Pancreatic Cancer
One large study found that those who drank the
most green tea had less risk to develop this disease compared with
non-drinkers. That was especially seen in women, about 50%. The men showed
lesser results – 37%. However, it is still unclear whether green tea has any
beneficial effects for lowering pancreatic cancer risk.
Prostate Cancer
The clinical studies suggest that green tea
extract prevent the growth of prostate cancer cells with increasing frequency,
duration and quantity of green tea. However, people who having chemotherapy
should talk to their doctors before drinking the teas. The green and black tea
extracts may lessen the effect of chemotherapy drugs.
Skin Cancer
The scientists suggest that the polyphenols, found
in green tea, have anti-inflammatory and anti-cancer properties and may help
prevent the growth of skin tumors.
Stomach Cancer
There also are few different opinions between
stomach cancer and green tea. Some studies found decreasing risk of this cancer
about half, compared green tea drinkers and non-drinkers. Others found no
association. Some researches showed that green tea can increase the risk of
stomach cancer.
To Sum Up the beneficial effects between Green Tea and Cancer
The high quality green tea or green tea extract
supplements can be a great way for prevention of cancer risk. Especially that
the tea supplements have high concentration in polyphenols that is needed to
prevent against cancer. Of course, always ask your doctor before drinking the
green tea for prevention of any diseases.
Drink the green tea regularly at
least two cups every day to see the positive results and beneficial effects.
But do not overdose. The 1 – 10 cups per day is the best daily amount of green
tea. Otherwise, too much green tea can have opposite effect.
Posted in: Green Tea Benefits
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