Diabetes Helped by Green Tea, New Studies

January 25, 2013 at 9:31 AM | Posted in diabetes, diabetes friendly, green tea | Leave a comment
Tags: , , , , , , ,

Diabetes Helped by Green Tea, New Studies

 

By Deborah Mitchell on January 25, 2013

 

 

Diabetes has reached epidemic proportions and can be a challenge to treat. Several new studies show how green tea may help patientsGreen tea better manage this disease and diabetic complications.

Green tea has compounds that help diabetes
Green tea is widely studied for a variety of health issues, and for good reason. Among its many helpful components are potent antioxidants called polyphenols, and a catechin called epigallocatechin gallate (EGCG) is of special interest.

In fact, scientists are so interested in EGCG, there is currently a clinical trial underway that is exploring how the green tea component affects the body’s response to insulin. While that study is underway, others have been completed, and here are some of the findings.

In a new study from Brazil, researchers explored the ability of green tea to protect the retina in diabetic rats. This information is critical because diabetics are prone to developing diabetic retinopathy, an eye condition that can result in blindness.

The researchers administered green tea to rats with diabetes and hypertension for 12 weeks. They discovered how treatment with green tea protected the retina against damage associated with glutamate (an amino acid) toxicity. Based on this finding, they noted they had found “a novel mechanism by which GT [green tea] protects the retina against neurodegeneration in disorders such as diabetic retinopathy.”

In a new study released in the February 2013 issue of Current Opinion in Lipidology, the multinational team of investigators reported on results from studies on plant components called flavonoids and the development of type 2 diabetes and heart disease.

Based on their analysis, they noted that “the strongest evidence exists for a beneficial effect of green tea” on bad cholesterol (low-density lipoprotein, LDL) levels and that “flavan-3-ols from green tea and cocoa may lower the risk of type 2 diabetes and cardiovascular diseases.” They did stress, however, that more trials need to be conducted to confirm these findings.

Finally, in a new study from China, a research team looked at the effect of green tea polyphenols on fat deposits in rats fed a high-fat diet. Since overweight, obesity, and diet are critical factors in type 2 diabetes, patients and experts alike are always interested in ways to better manage these risk factors.

In the study, the rats were fed a high-fat diet and given three different dosages of green tea polyphenols in their drinking water. Over time, the scientists observed that the green tea polyphenols reduced fat deposit and levels of adiponectin (a protein that has an important role in glucose and lipid metabolism), as well as other benefits important for diabetes.

Can drinking green tea and/or taking green tea supplements improve your ability to prevent or manage diabetes and its complications? So far there is a considerable body of evidence suggesting green tea and its potent polyphenols have the potential to help individuals who have diabetes and diabetes risk factors, and these new studies add to the growing literature.

 

 

http://www.emaxhealth.com/1275/diabetes-helped-green-tea-new-studies

Green tea can reduce skin cancer

August 23, 2012 at 3:36 PM | Posted in green tea | 2 Comments
Tags: , , , , , , ,

Green tea can reduce skin cancer

Aug 23, 2012 | © The Daily Telegraph

 
Powerful new anti-cancer drugs based on green tea could be developed after scientists found an extract from the beverage could make almost half of skin tumours vanish.

The team of researchers from the University of Strathclyde made 40% of human skin cancer tumours disappear using the compound in a laboratory study.

Green tea has long been suspected of having anti-cancer properties and the extract, epigallocatechin gallate, has been investigated. However, this is the first time researchers have managed to make it effective at shrinking tumours.

Previous attempts to capitalise on its cancer-fighting properties have failed because scientists had used intravenous drips, which failed to deliver enough of the extract to the tumours themselves.

The Strathclyde team devised an alternative “targeted delivery system”, piggybacking the extract on proteins that carry iron molecules, which tumours readily absorb. The laboratory test on one type of human skin cancer showed 40% of tumours disappeared after a month of treatment, while an additional 30% shrank.

Dr Christine Dufes, who led the research, said: “When we used our method, the green tea extract reduced the size of many of the tumours every day, in some cases removing them altogether.

“By contrast, the extract had no effect when it was delivered by other means as every one of these tumours continued to grow. This research could open doors to new treatments.”

Dufes said population studies had previously shown green tea had anti-cancer properties, and scientists had identified the active compound as epigallocatechin gallate. The Strathclyde researchers were the first to deliver it in high enough doses to tumours to have an effect.

She said: “The problem with this extract is when it is administered intravenously, it goes everywhere in the body, so when it gets to the tumours it is too diluted. With the targeted delivery system, it is taken straight to the tumours without any effect on normal tissue.”

Scientists are increasingly using targeted delivery to improve results, relying on the many “receptors” that tumours have for different biological substances.

In this instance, scientists used the fact that tumours have receptors for transferrin, a plasma protein which transports iron through the blood.

http://www.timeslive.co.za/thetimes/2012/08/23/green-tea-can-reduce-skin-cancer

Green tea drinkers show less disability with age: study

February 4, 2012 at 11:14 AM | Posted in diabetes, diabetes friendly, Food, green tea | 3 Comments
Tags: , , , , , , ,

Green tea drinkers show less disability with age: study

NEW YORK | Fri Feb 3, 2012 4:00pm EST

(Reuters Health) – Elderly adults who regularly drink green tea may stay more agile and independent than their peers over time, a large study of Japanese adults suggests.

Green tea contains certain antioxidant chemicals — particularly a compound known as EGCG — that may help ward off the body-cell damage that can lead to disease. And researchers have been studying green tea’s effects on everything from cholesterol to the risk of certain cancers — with mixed results so far.

For the new study, Japanese researchers looked at a different question: Do green-tea drinkers have any lower risk of frailty and disability as they grow old?

Following nearly 14,000 adults age 65 and older, they found that people who drank the most green tea were the least likely to develop “functional disability” over the next three years.

Functional disability refers to problems with daily activities like going to the store or doing housework, or difficulty with more-basic needs like dressing and bathing.

In this study, almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled. That compared with just over 7 percent of people who drank at least five cups per day.

That alone does not prove that green tea keeps you spry into your golden years.

But the study, reported in the American Journal of Clinical Nutrition, did account for a range of factors that could explain the connection.

Green-tea lovers generally had healthier diets — more fish, vegetables and fruit — as well as more education, lower smoking rates, fewer heart attacks and strokes and greater mental sharpness.

They also tended to be more socially active and have more friends and family to rely on. (Studies have found that older adults with more “social support” are less likely to become disabled.)

But even with those factors considered, green tea itself was tied to a lower disability risk, according to the researchers, led by Yasutake Tomata of Tohoku University Graduate School of Medicine.

People who drank at least five cups a day were one-third less likely to develop disabilities than those who had less than a cup a day. And people who averaged three or four cups a day had a 25 percent lower risk.

All of that hints at a real effect of green tea. But ultimately, Tomata’s team writes, definitive proof can come only from clinical trials testing the effects of green tea, or green tea extracts, on disability risk.

If green tea does offer a buffer against disability, it’s not clear how.

But one recent study found that green tea extracts seemed to boost leg muscle strength in older women, notes Tomata’s team, who could not be reached for comment.

In general, green tea is considered safe in moderate amounts. But the tea and its extracts do contain caffeine, which some people may need to avoid.

Green tea also contains small amounts of vitamin K, which means it could interfere with drugs that prevent blood-clotting, like warfarin. Since many elderly people are on multiple medications, it’s wise for them to talk with their doctors before using green tea as a health tonic.

SOURCE: bit.ly/wXuZbl American Journal of Clinical Nutrition, online January 25, 2012.

http://www.reuters.com/article/2012/02/03/us-greentea-idUSTRE8121T720120203

Why is green tea so healthy?

December 29, 2011 at 9:44 PM | Posted in diabetes, diabetes friendly, Food, green tea | 5 Comments
Tags: , , , , , , ,

Why is green tea so healthy?
by AMY ANDERSON, Daily Mail

It has just emerged that American doctors have developed a cream to ward off skin cancer. The magic ingredient is green tea, which is well known for its cancer-fighting properties.
Natural antioxidants called polyphenols in the tea help block the growth of skin cancer cells. In fact, green tea has a whole host of other health benefits.

Green tea helps burn fat
It can help speed up the metabolic rate because its antioxidant effect helps the liver to function more efficiently.
A recent U.S. study of overweight men found that, with no other changes to their diet or exercise regimes, drinking green tea three times a day burned up 200 extra calories a day. The green tea drinkers also found that their energy levels were greatly increased.

 
Green tea protects against heart disease
It has been shown to lower LDL (bad) cholesterol, because its potent antioxidant effects inhibit the oxidation of LDL cholesterol in the arteries.
The formation of abnormal blood clots (thrombosis) is the leading cause of heart attack and stroke, and green tea has been shown to inhibit abnormal blood clot formation as effectively as aspirin.

 
Green tea can help lower blood pressure
A major cause of hypertension (high blood pressure) is an enzyme secreted by the kidneys called angiotension- converting enzyme (ACE).
Popular drugs for hypertension act as ACE inhibitors: by blocking the effects of ACE, blood pressure is reduced. Green tea is a natural ACE inhibitor, and several medical studies show lowered blood pressure in animals and humans given green tea extracts.

 
Green tea can help protect against diabetes
When starch is consumed, it requires the enzyme amylase to break it down into simple sugars that can be absorbed in the bloodstream.
Green tea polyphenols inhibit amylase, and so can help lower blood sugar levels. High blood levels of glucose and insulin predispose people to diabetes.

 
Green tea can help prevent food poisoning
As it can kill bacteria, drinking green tea with meals may reduce the risk of bacterial food poisoning.
It prevents the growth of dangerous intestinal bacterial strains such as clostridia and E. coli and promotes the growth of friendly bifidobacteria.

 
Green tea can prevent bad breath
Drinking green tea – which is a natural anti-bacterial agent – with food may help kill the oral bacteria that cause cavities and bad breath.

 
Green tea guards against hepatitis
Viral hepatitis is often triggered by high levels of iron in the liver. Green tea lowers iron levels throughout the body, so may have a direct anti-viral effect against certain strains of hepatitis.

 
Green tea can protect against cancer
There is growing evidence to suggest that green tea contains compounds that fight cancer. The tea contains a compound called epigallocatechin-3-gallate (EGCG), which helps inhibit blood vessel growth.

 
Green tea can help prevent arthritis
A recent study found that antioxidants in green tea may prevent or reduce the severity of symptoms of rheumatoid arthritis.
Antioxidants in the tea inhibit the Cox-2 gene that triggers inflammation, working in much the same way as anti-inflammatory drugs.

Green tea improves your immunity
Gargling with green tea boosts immunity to influenza and flu, according to a study in Japan.
Research at Harvard University also indicated that green tea chemicals stimulated gammadelta T-cells, which bolster immunity against bacteria and viruses.

 
Green tea can protect against Alzheimer’s disease
A recent two-year study of a group of people aged 80 and over found that 96 per cent of those who drank ten cups of green tea a day showed no signs of cognitive impairment, compared to only 12 per cent who didn’t drink green tea.

 
Green tea can help fight allergies
Researchers in Japan have identified a compound in green tea that, in laboratory tests, blocks a key cell receptor involved in producing an allergic response.
The compound, methylated epigallocatechin gallate, works by blocking the production of histamine and immunoglobulin E, two compounds in the body that are chiefly involved in triggering and sustaining allergic reactions

Read more: http://www.dailymail.co.uk/health/article-196334/Why-green-tea-healthy.html#ixzz1hwSEjSKA

Create a free website or blog at WordPress.com.
Entries and comments feeds.

Aldis Ferlach O'Peigh

Telling Tall Tales

EAT it NOW or EAT it LATER

my belly is so FULL!

Zest For Cooking

I love to cook and share my love of food!

Quaint Cooking

For the love of the vintage kitchen

The Short (Dis)Order(ed) Cook

Just a short, anxious woman who likes making a mess in the kitchen

Feasting on Veggies

Healthy eating after breast cancer

MealTrips

Get your cravings anytime

All Fall Y'all

All Fall. All year round.

Cassie's Kitchen

mostly healthy, always tasty

Memories and Such

Memories of a very ordinary life

Welsh Girl Foodie

Welsh Girl living in Scotland who loves to cook and eat!

Megan's kitchen recipes

Random food recipes I've found online

Mustard With Mutton

DIARY OF A GLUTTON

Lite Cravings

A Healthy Approach to Indulgence

The Southern Search

Finding out where food comes from, one southern staple at a time.

Tikkas To Tapas

Food for the Soul

Planted in the Kitchen

Easy Vegan Recipes