Benefits of Green Tea.. Other Non-Cancer Conditions

Wheatgrass · #1 01-23-2006, 11:30 PM

Benefits of Green Tea

Atherosclerosis Supplementation with antioxidants is important in part because by protecting cholesterol from oxidation, antioxidants help protect against atherosclerosis. In an animal study comparing the effectiveness of various antioxidants in preventing the oxidation of VDL and LDL cholesterol, vitamin E, genistein (phytoestrogen found chiefly in soy products) and green tea were found to be effective antioxidants, with genistein being particularly effective (oxidation lag time of 49% on the high-genistein diet), but green tea also exerting considerable activity (lag time of 33%). It would be interesting to see the results of combined genistein and green tea supplementation, particularly in humans. On the other hand, it could be argued that this is precisely the case of the Japanese diet. Japan enjoys the longest life expectancy in the world, and the lowest cardiovascular mortality for men, in spite of heavy smoking.

Brain Functioning Green tea has been shown to protect the brain from oxidative stress, and lower monoamine oxidase (MAO) activity. Neurodegenerative diseases have been linked both to free radical damage and to excessive breakdown of neurotransmitters caused by high monoamine oxidase activity. Green tea in general, as well as its phenolic components catechin and epigallocatechin gallate, have been found to be effective at inhibiting MAO and lowering peroxide levels in glial cells in the brain. Further evidence that green tea might be useful in preventing age-related brain degeneration comes from studies of the effects of catechins on nerve cell cultures. Thanks to their antioxidant properties, catechins were able to protect the cells from death induced by glucose oxidase. Catechins are also able to restrain the production of nitric oxide by the glial cells surrounding the neurons. Nitric oxide plays an important role as a neurotransmitter involved in memory formation, but excess levels lead to neural death and neurodegenerative disorders. Flavonoids in general are particularly effective in regulating the levels of nitric oxide in the brain. Green tea is among a handful of substances that can reduce nitric oxide production at concentrations of less than 300 parts per million. The ability to lower lipid peroxidation and to chelate iron in the nervous system is also of tremendous importance. Parkinson's disease involves the progressive destruction of the dopamine-releasing nigrostriatal dopaminergic system, and hence the ever-increasing dopamine deficiency. It is possible that sufficient green tea consumption might protect against Parkinson's disease. Both green and black tea are also potent inhibitors of intestinal absorption of non-heme iron, lowering the amount of free iron reaching the brain in the first place. Japan has a much lower rate of Alzheimer's disease than Western countries. The Japanese living in Hawaii have 2.5 times the incidence of Alzheimer's disease than do native Japanese in Japan. It would be interesting to see to what extent the Japanese custom of sipping green tea all day, as contrasted with much lower consumption of green tea by the American-Japanese, contributes to neural protection. Researchers including Edward Okello of Newcastle University (in northeast England) biology school pitted green tea, black tea, and coffee. They found that tea stops the activity of chemicals in the brain associated with the development of Alzheimer's disease. Symptoms of Alzheimer's disease occur when brain nerve cells that process information and memory degenerate and die. Abnormalities such as plaque and tangles proteins form on nerve cells.

Diabetes The ability to significantly lower blood glucose has been confirmed also in studies using diabetic rats. Both green and black tea were shown to possess anti-diabetic activity, and to be effective both in the prevention and treatment of diabetes. The fact that aged rats responded so dramatically to these polyphenols implies that it is possible to reverse the age-related rise in glucose intolerance and the resulting degenerative cascade of atherosclerosis and other degenerative disorders. In what way are tea polyphenols able to lower serum glucose? The main mechanism seems to be the inhibition of the activity of starch digesting enzyme amylase. Tea inhibits both salivary and intestinal amylase, so that starch is broken down more slowly, and the rise in serum glucose is thus minimized. In addition, according to one recent study, tea may reduce the intestinal absorption of glucose. A relatively little known compound found in onions and in tea, especially green tea, called diphenylamine, seems to have a strong sugar-lowering action. Again, the lesson here is that we are barely beginning to identify the significant phenolic compounds and their interactions; it's best not to rely on a single ingredient such as epigallocatechin gallate, but rather to ingest the whole complex set of bioactive compounds present in tea for best results. Thanks to the serum glucose-lowering effect of tea, we thus obtain significant anti-aging benefits of calorie restriction, reduced glycation, and lower insulin secretion. If you drink tea with a carbohydrate-rich meal, you slow down the release of glucose and reduce its absorption (you also reduce the absorption of iron, another anti-aging benefit). Thus, you prevent the harmful spiking of insulin. Since insulin is our most fattening hormone and, with cortisol, our most pro-aging hormone, you also derive the substantial range of benefits that go with calorie restriction and insulin control.

Wheatgrass · #2 01-23-2006, 11:30 PM

Heart Since blood sugar tends to increase with age, accelerating aging by cross-linking with proteins (glycation), the ability of green tea to lower serum glucose levels is extremely important as part of its anti-aging benefits. Some would argue that tea's ability to lower blood sugar, and thus insulin levels and glycation, is its most important anti-aging property. A study comparing the effects of 75-day feeding of green tea and black tea to aged rats found that green tea lowered blood sugar only slightly better than black tea (23.9% vs 22.8%), but was markedly superior in reducing triglycerides (33.3% vs 25%; high triglycerides are strongly associated a high risk of cardiovascular disease). A low ratio of triglycerides to HDL is an excellent marker of cardiovascular health. Black tea, however, was a better inducer of superoxide dismutase (SOD; the activity of SOD was 117% higher in the black tea group vs. control, as compared to 90.8% higher in the green tea group), and a better blocker of the harmful malondialdehyde, a byproduct of lipid peroxidation (black tea reduced it by 34.6%; green tea by 25.4%). The authors' conclusion that black tea is a more powerful antioxidant in vivo needs to be confirmed by other studies.

High cholesterol Some very exciting results were found when rats were fed 2.5% green tea leaves in their diet. The experimental group showed a drop in total cholesterol, low-density cholesterol, and triglycerides. The body weight of green tea-fed rats was 10 to 18% lower than that of rats not consuming green tea. In addition, the activity of antioxidant enzymes superoxide dismutase (SOD) and catalase, and of anti-carcinogenic phase-II enzyme glutathione S-transferase (GST), were significantly higher in the green tea group, as was the glutathione level in the liver. There was no liver or kidney toxicity. Thus, the study demonstrated combined cardiovascular and anticancer effects of green tea. The cholesterol-lowering (hypocholesterolemic) effects of green tea (as well as black tea) have been confirmed by both animal and human epidemiological studies. In addition to lowering the atherogenic index as expressed by the HDL/total cholesterol ratio in rats, green tea and jasmine green tea also reduced the increase of liver weight that results from fat deposition. High consumption of green tea by humans, especially more than 10 cups a day, was found to be associated with higher HDLs and lower LDL and VLDL cholesterol, as well as with various bio-markers indicating better liver health. Lower levels of lipid peroxides in the liver are one well-confirmed benefit of green tea supplementation, found in study after study. The pancreas is another organ that is protected by green tea. In a double-blind, randomized, placebo-controlled trial done by Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, 240 adults were given either theaflavin-enriched green tea extract in form of 375mg capsule daily or a placebo. After 12 weeks, patients in the tea extract group have significantly less low-density lipoprotein cholesterol (LDL-C) and total cholesterol (16.4% and 11.3% lower than baseline, p<0.01) then the placebo group. The author concluded that theaflavin-enriched green tea extract can be used together other dietary approaches to reduce LDL-C.

Kidney Health The kidneys are another area where green tea has shown to have protective effects. Decreased kidney function due to aging and kidney failure are a frequent cause of death. The public is generally unaware that anything can be done to prevent the age-related decline in kidney function. Making use of a wide-range of antioxidant protection appears crucial, and flavonoids, including green tea catechins, are very potent antioxidants. Epigallocatechin gallate was shown to induce antioxidant enzymes in the kidneys, as well as to reduce uremic toxins in the blood, suggesting improved kidney function in an animal model of kidney failure.Kidney problems are often associated with high blood sugar and consequent glycosylation of various proteins (hence the strong link between kidney failure and diabetes). Since green tea has the ability to lower serum glucose, this is another way in which it helps protect against kidney failure. Likewise, the antioxidant properties of green tea likely play a significant role in protecting the kidneys. Since green tea has been shown to lower the concentrations of free radicals and lipid peroxides in organs such as the liver and the pancreas, this is likely to be true in the kidneys as well.

Hypertension Green tea, as well as oolong tea, may also have beneficial effects on hypertension. In a study done by Yang and other authors, examined the relationship between green and oolong tea and hypertension in 1507 subjects in the Chinese population. Six hundred of the subjects regularly drank green tea. After adjusting for several other variables that may affect the outcome of the results, the authors found that, compared to those who did not regularly drink green tea, those who drank between 120 ml/d and 599 ml/d of green tea for at least one year were 46% less likely to develop hypertension. Those who drank 600 or more ml/d for at least one year were 65% less likely to develop hypertension.

Sussanterranvik · #3 12-17-2009, 03:30 PM

Nice to see you !

worshiper · #4 06-29-2010, 01:45 PM

That is very true.That is really beneficial especially to heart and brain.The other advantage is regarding to weight loss..Drinking as black tea and green tea helps reduce bad cholesterol and increases good cholesterol.

kennymevrick · #5 09-09-2010, 11:18 AM

Green tea is the best for our health, Green tea, as well as oolong tea, may also have beneficial effects on hypertension, Both green and black tea were shown to possess anti-diabetic activity, and to be effective both in the prevention and treatment of diabetes. It Decreased kidney function due to ageing and kidney failure are a frequent cause of death.

bethel211 · #6 09-27-2010, 09:49 AM

Green tea is very effective for natural weight loss. t is healing and preventive lot of processes. Green tea is the key to living longer and healthier lives. Green tea also inhibits the metabolism and increase fat absorption and helps glucose regulation.

paulcllngwd · #7 12-01-2010, 07:31 PM

yaa green tea is really very helpful when we have to loos weight. Green tea is among a handful of substances that can reduce nitric oxide production at concentrations of less than 300 parts per million.

jasicajame · #8 12-14-2010, 10:59 AM

There are so many benefits of green tea it prevents from a cancer. Chinese are using a green for curing from a headache. It contain many vitamins and its has a powerful anti oxidant it gives curing from cancer and it kill a current cancer cell which was present in a body without effecting an entire body and prevent to us by any type of cancer.

Galvin · #9 03-22-2011, 07:57 AM

Hi,
Jasmine green tea is the best brand used in USA and it is labeled as the most reliable brand of this age....
Effective thing to lose weight...
THanks

greaywhite · #10 06-01-2011, 12:14 AM

There are so many benefits of green tea it prevents from a cancer. Chinese, Japanese and USA, that's of the country green tea is growing. in green tea polyphenols has protect cancer.

neonpatrick · #11 06-03-2011, 10:12 PM

Benefit of Green tea are :
1 Can prevent cancer
2 Can help in losing the weight
3 Green tea is very good for heart and brain
4 It cover the risk of heart disease
5 Can make our mind so relax and fresh.

callhats · #12 06-21-2011, 11:04 AM

There are so many benefits of green tea. It is really very healthy tea for health because it is helpful for reduce weight and also helpful for reduce stress. I think green tea is healing and preventive lot of processes. It is also help prevent of cancer. I am always drink a green tea because it is very healthy for health.

soobsyolpur · #13 07-06-2011, 11:13 AM

wow Green Tea is really beneficial....I didn't know about the benefits of Green Tea.

micallarryy1 · #14 08-26-2011, 11:19 AM

Green tea is good for over all functioning of the body because it is rich in antioxidants and also contributes to weight loss.Green tea lowers total cholesterol, and improve the ratio of good cholesterol to bad cholesterol .

albertswoods · #15 08-27-2011, 04:47 PM

Green tea is really very good for the health. Green tea is the best natural antioxidant. It is my favourite natural energy drink. Green tea promote peace of mind and helps in losing weight.

carriewalt · #16 09-07-2011, 07:31 AM

Many of studies and researches are proven that herbal tea is best health drink to prevent from the high risks of several cancers in human body. It is also prevented the damage for health by more smoking and drinking alcohol.

maddox · #17 09-15-2011, 10:58 AM

Quote:

Originally Posted by Wheatgrass

Heart Since blood sugar tends to increase with age, accelerating aging by cross-linking with proteins (glycation), the ability of green tethors found that, compared to those who did not regularly drink green tea, those who drank between 120 ml/d and 599 ml/d of green tea for at least one year were 46% less likely to develop hypertension. Those who drank 600 or more ml/d for at least one year were 65% less likely to develop hypertension.

upppsss...I knew this that green tea is actually too good for health...but have never seen so much of researh work. Must say you have given a useful information...keep it up buddy...

JacksonWang · #18 09-26-2011, 06:45 PM

Green Tea is the main health supplements of our body.
It helps to lose weight.
Maintain blood Circulation.
Reduce risk of heart disease.
Lower cholesterol level.
Reduces risk of heart stroke, improves good cholesterol.
Improve immune system and Killing the bacteria.

tobbyhot · #19 09-27-2011, 07:19 AM

I know it has so many benefits but I don't like the taste so I don't drink.

markscote · #20 10-20-2011, 05:44 PM

The benefits of green tea in the human body is so remarkable, it considers a longer, healthier life may be the key to brewing in your cup. One of the advantages is the best weight loss.

robertcook · #21 11-08-2011, 04:10 AM

Benefits of green tea are,
1. We can bur fat easily,
2. It improves our skin,
3. It prevents us from many diseases,
4. It reduces high blood pressure,
5. It improves our digestive system.

johnsonbelly · #22 11-11-2011, 02:22 PM

Green tea is the super tea as it is least processed and provides the most antioxidant polyphenols, notably a catechin called epigallocatechin-3-gallate (EGCG), which is responsible for most of the health benefits.
* It not just inhibits the growth of cancer cells but also helps in killing those dangerous cells without harming any healthy cell. The greenish-yellow tea has a green, slightly astringent flavor close to the taste of the fresh leaf.
* Green tea lowers total cholesterol levels, as well as improves the ratio of good cholesterol to bad cholesterol. Moreover, it inhibits the abnormal formation of blood clots which is the leading cause of heart attacks and stroke. Green tea represses angiotensin II which leads to high blood pressure & reduces the possibilities of heart attacks

ericsmith · #23 11-16-2011, 12:03 PM

You covered everything. Nice share.
Green tea is one of the most effective ways for natural weight loss.

christinadepth · #24 12-07-2011, 04:51 PM

I drink every day at least one cup of green tea Duncan donuts large, usually more than that. In addition to listing the reasons, studies have shown that green tea and the risk of depression and seasonal affective disorder in people to help.

jimmyjones · #25 01-02-2012, 02:59 PM

The health benefit of green tea are :
- help eliminating weight
- Minimize the heart disease risk
- Improve eyes vision
- Improve digestion.

marcy17 · #26 01-12-2012, 11:25 AM

I usually take this tea and herbal too..

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