green tea

Green Tea Benefits - Natural Weight Loss and Breast Cancer Treatment


Green tea (Camellia sinensis) chemicals (polyphenols), and its caffeine content, may be a natural treatment for obesity management and weight loss. Green tea can reduce the body’s metabolic rate according to an on-line medical abstract, posted on the PubMed website, by the Medical Department of Maastricht University, Maastricht, The Netherlands.


Green tea's cancer preventive properties, including breast cancer, is over-viewed in a PubMed on-line abstract posted by the School of Medicine, Wayne State University, in Detroit, Michigan, USA. The cancer preventive properties are supported by "...epidemiological, cell culture, animal and clinical studies."

The American Cancer Society (ACS) discusses the potent antioxidant properties (catechins) of green tea, on the ACS website. The catechins may have to ability to cause cancer cells to die “in much the same way that normal cells do.” ACS also discusses the positive and negative aspects of using green tea for cancer cell treatment.

Green Tea’s Action on Body Fat for Obesity Help

Green tea and caffeine “...may increase energy expenditure” and “counteract” the slowing of body energy liberated or expended (metabolic rate) during weight loss, according to the Maastricht University abstract. The combination of compounds (catechins) and caffeine in green tea may enhance fat oxidation ((phosphodiesterase) while not destroying fat free tissue mass.

The Masstricht University abstract concludes by stating several ingredients in green tea may increase fat oxidation while converting excess calories to heat (thermogenesis). Fat storage in the body can cause an increasing body mass index (BMI), and may cause overweight and morbid obesity.

The Green Tea Effect on Breast Cancer Cells

The most important catechin ingredient in green tea is Epigallocatechin 3-gallate (EGCG), a type of antioxidant plant metabolite (organic compound) produced by metabolism (building and breaking down of complex organic molecules). The effects of EGCG is “cancer-preventive...[making EGCG a] potential use for cancer prevention and treatment," according to the Wayne State University abstract.

Past clinical and animal medical studies show the EGCG in green tea contributes to cancer prevention by inhibiting proteasome (large protein complexes). The inhibiting cancer effect of EGCG, and anticancer activities has the "...ability to attack human breast cancer cells," advises the Wayne State University abstract.

Green Tea Cancer Treatment: Effects of Caffeine

Green tea’s EGCG “may cause cancer cells to die...” states the American Cancer Society (ACS) on their “Green Tea” web page. Laboratory studies show green tea can fight cancer cells, but the cancer studies in humans “have been mixed.” The evidence green tea can prevent and cure cancer in humans is not conclusive.

For many thousands of years Asians have consumed green tea, and “with few dangerous side effects” states ACS. The tea can cause allergic reactions in some people. Large amounts of green tea should not be consumed, however, the ACS article does not provide information about what would constitute a large amount.

ACS lists the major concerns about caffeine in green tea, and provides some parting advice:

- inhibits body absorption of certain medicines
- inhibits body absorption of iron supplements
- nausea
- sleep problems
- frequent urination
- anxiety
- large amounts can cause problems with the fetus in pregnant women
- large amounts can be passed to breast milk

"Always tell your doctor and pharmacist about any herbs and supplements you are taking."

The two medical studies state green tea may contribute to cancer prevention, treatment, and weight loss. Perhaps the best option would be to use green tea as a secondary treatment and prevention method after seeking the advice and treatment of medical professionals.