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Saturday, November 4, 2006

Can Caffeinated Beverages Reduce Your Breast Cancer Risk?

Women today are more concerned than ever about preventing breast cancer. There is much speculation about how our lifestyle and habits affect our chances of contracting this and other cancers. Well, there are many risk factors that can make you more prone to breast cancer, but there are also things you can do to prevent breast cancer.

First, it’s important to have a healthy diet. Avoiding processed foods and eating a diet that is low in saturated fats and high in fruits, vegetables and fish. These foods can keep your weight in check and protect your health by providing vitamins and fiber.

In addition to these foods being healthy and fiber rich, they also provide significant ant-oxidants. Anti-oxidants are extremely important to slowing down the aging process and preventing disease.

Each day as our body converts food to energy, it creates oxygen carrying molecules called free radicals. If free radicals are not eliminated from the body, they damage our cells and our DNA. This cell damage is partially responsible for a multitude of diseases, including cancer.

Anti-oxidants are important because they rid the body of free radicals. Since free radicals are created daily, they should be eliminated daily, too. But, because our diets have become so laden with processed food, many of us don’t consume enough anti-oxidants each day.

So, protecting our health means we have to make changes in our lifestyle. Watching what we eat and drink can put us in the best position to combat aging as it creeps up on us.

While you’re taking stock of what’s in your pantry, don’t forget to include looking at what you drink. You need a good dose of anti-oxidants each day, and many of us just don’t consume enough fruits and vegetables to get our daily requirement.

Well, it turns out that drinking tea and coffee can be a great way to increase your anti-oxidants and improve your health- particularly your resistance to breast cancer. There have been many studies that have reported the benefits of green tea, but one recent study suggested that there may be benefits to drinking black tea and coffee, too.

The study I’m referring to was conducted at the Gifu School of Medicine in Japan. The study was conducted on pre-menopausal women. This study looked at the hormone level of 50 Japanese women during different days of their menstrual cycle. They found that in women who consumed tea, coffee and even caffeinated cola had a higher level of the sex hormone binding globulin on critical days of their cycle than the women who did not consume these beverages.

Why Is This Important?

The level of binding globulin is important because low levels of this hormone in pre-menopausal women have been associated with a higher risk of developing breast cancer. So, it appears that drinking your daily intake of caffeine may help your body produce a higher level of binding globulin and help protect you from breast cancer.

Which of These Beverages Should I Drink?

In this particular study, researchers found no difference in the binding globulin level between those who drank coffee, tea or even cola. It seemed to be the consumption of caffeinated beverages of any kind that caused the level of binding globulin to rise.

However, many other studies have shown that in addition to having caffeine, green tea has many other health protecting qualities, as well. Remember how important we just said that anti-oxidants are to our diet? Well, it just so happens that green tea has an extraordinary level of very potent anti-oxidants. Black tea and coffee have anti-oxidants, too; but nothing to compare to the level and potency you’ll find in green tea. (Cola, by the way, does not contain anti-oxidants.)

Though green and black tea both come from the camellia sinensis plant, green tea is healthier because of the way it’s processed. Black tea is fermented, which changes the structure of the anti-oxidants, making them less effective and potent. Green tea is not fermented (nor is white), so it retains anti-oxidants in their most natural and potent state.

And, for those of you who might be sensitive to caffeine; you’ll be happy to know that green tea has less caffeine than coffee or black tea. But, clearly it has enough caffeine to increase your level of binding globulin sufficiently. Remember, the study cited above showed no difference between green tea drinkers and other caffeinated beverage drinkers in terms of the level of binding globulin.

Making Changes You Can Continue

So, if you’re interested in reducing your breast cancer risk, you need to make some changes to your lifestyle to help protect your health. Watch your diet; be sure you’re getting the recommended amount of fresh fruits and vegetables each day.

You should also be sure to add some sort of caffeinated beverage to your diet, if you’re not already drinking some. And, to boost both your anti-oxidants and get your caffeine at the same time, make that beverage green tea.

Make lifestyle changes that you can commit to- otherwise you’ll be unlikely to keep up with them. It might not be realistic for you to say that you’re going to immediately increase your intake of vegetables from none each day to five servings. But, if you can consistently eat two servings each day, then you’ve still made an improvement. And, perhaps later you can work up to five servings.

Small changes over time are the best way to ensure that you’ll continue your new healthy habits. Reduce your number of processed foods and increase your intake of fruits, vegetables and green tea slowly over time. This way, you won’t feel overwhelmed and be tempted to quit.

Smoking can also increase your risk for cancer. We all know that smoking makes us likely candidates for lung cancer, but what many people don’t know is that smoking increases your overall risk for cancer. Smoke is toxic to your body, and can increase your risk of any cancer, including breast cancer.

Breast cancer is the second most common cancer among women in the US. This year, over 200,000 women will be diagnosed with breast cancer, and over 40,000 will die from it.** It pays to understand how to protect your health and reduce your risk of contracting this disease.

Friday, November 3, 2006

Can Green Tea Improve Your Chances of Surviving Breast Cancer?

Breast cancer is one of the most frightening diseases faced by today’s women. In fact, breast cancer is the second most common cancer among women, after nonmelanoma skin cancer. About 13% of American women will develop breast cancer at some point in their lifetime. And, it is the second leading cause of cancer death among women, after lung cancer.

Scientists are continuing to look for new information to determine what causes breast cancer as well how to prevent and treat this disease. Today, we still don’t know what causes breast cancer, but we do understand some of the risk factors.

In addition, we have come a long way in treating breast cancer – though many women still die each year. Some of the research is very promising, including research on green tea.

One group of breast cancer sufferers who cause doctors a great area of concern are those who have a higher than average expression of the epidermal growth factor Her-2/neu. Her-2/neu is a growth factor that sometimes presents itself in a tumor. An over expression of this growth factor is a concern for breast cancer patients.

During routine testing of patients who have been recently diagnosed with invasive breast cancer, doctors will determine the level of Her-2/neu. If the level is high, this information is used to guide treatment. The level of this growth factor is important because studies have shown that patients with an over expression of Her-2/neu have a higher likelihood of their cancer metastasizing, and have an overall lower survival rate. The Her-2/neu is high in about 30% of breast cancer patients.

As part of the ongoing research to find effective treatments for breast cancer, scientists have been looking seriously at the benefits of green tea, both on preventing cancer and treating it. Asian cultures have used green tea for its healing properties for centuries, and their overall rate of cancer is much lower than that of the Western world.

Tea is derived from the Camellia sinensis plant. You’ll hear tea referred to as green, white or black. These differences do not result from actual different types of tea leaf, but rather from differences in how the tea leaves are processed. Green and white teas are not fermented during processing, but black tea goes through such a processing.

Tea leaves contain catechins, part of the flavan-3-ol class of flavonoids, which are anti-oxidants. EGCG is one of the catechins contained in tea, and is a potent anti-oxidant. Fermenting the tea leaves converts the catechins to other compounds that are not as healthy as those in unfermented tea. So, the focus of research has been on green tea, because of its healthier form of anti-oxidants.

What’s So Great About Anti-Oxidants?

During our body’s process of converting food to energy, we create free radicals in our body. These free radicals are damaging to our cells and DNA if we don’t combat them. Left unchecked, free radicals contribute to speeding up the aging process and to causing diseases such as cancer, heart attack and stroke.

Anti-oxidants, however, can help us combat these free radicals, and a diet in anti-oxidants is linked with preventing cancer, heart disease and stroke. So, doctors recommend a diet high in anti-oxidants – which means eating lots of fresh fruits and vegetables and drinking green tea each day.

However, scientists also seem to be finding out that green tea may be able to increase the effectiveness in some cancer treatments. Several studies conducted on mice already diagnosed with cancer have shown that taking green tea along with the cancer treatments can increase the effectiveness of the traditional therapy and may slow down the progression of cancer to other cells. There is promising research; some of it directly related to breast cancer treatment.

One particular study of interest was conducted by the Boston University School of Medicine. In this study, female mice with breast cancer whose Her-2/neu levels were very high were treated with green tea along with their regular cancer treatment. Mice that ingested the green tea showed a slower growth of their tumors and a slower progression of their cancer than those who were treated with the same medicine without green tea as an adjunct therapy.

Thursday, November 2, 2006

The Fight Against Breast Cancer: Going Green

In the past few years, a number of women have turned to green vegetables in an effort to attempt to lower their risk of breast cancer. With the disease affecting as many as one in eight American women, it is only natural that women look to natural remedies in an attempt to improve their odds in the fight against this all-too-prevalent kind of cancer.

Increasingly, though, researchers are looking to another green food in an effort to cut breast cancer risk—green tea. While black tea and chamomile tea have long been thought to soothe nerves and combat depression, it is green tea which is making headlines in the world of cancer research.

A number of animal and laboratory studies have shown that green tea can be highly effective in fighting tumors in the mammary tissues. But only recently has the scientific community been able to address the effect of green tea on breast cancer in human beings.

A Case in Point

One significant study indicated that green tea extract prevents breast cancer cells from producing a chemical that leads to tumors. University of Southern California researcher Anna H. Wu and her team noted the dietary and lifestyle choices of more than 500 women with breast cancer and nearly 600 women without cancer in Los Angeles.

The women were of Asian descent and ranged in age from 25 to 74. The researchers found that the healthy women were far more likely to consume green tea. And those breast cancer patients who did drink green tea were likely to consume less of it than the healthy women were. In fact, drinking less than six tablespoons of green tea a day appeared to cut a woman’s risk for breast cancer by as much as 30 percent.

Unfortunately, women who consume a great deal of black tea do not appear to be protected from the onset of breast cancer. Since black tea is more popular in Western nations than green tea, such news can be disappointing. But the fact that green tea’s popularity is gaining strength in the West means that Western women could enjoy the same breast cancer protection that green tea drinkers in the Far East have enjoyed for years.

Green Tea and Breast Cancer Recurrence

But what about women who have already experienced breast cancer? Is it possible for them to reduce their chances of a recurrence by downing cups of green tea?

As you might expect, scientific researchers have been asking the same questions. For instance, a Japanese research team addressed those issues in their article, “Regular Consumption of Green Tea and the Risk of Breast Cancer Recurrence: Follow-up Study from the Hospital-based Epidemiologic Research Program at Aichi Cancer Center (HERPACC), Japan.”

As the Asian researchers noted, various studies indicate that green tea can inhibit the development and growth of tumors. Given that fact, they thought it helpful to examine the link between regular green tea consumption and the risk of a recurrence of breast cancer.

The researchers studied 1160 new surgical cases of female breast cancers between June of 1990 and August of 1998. About 12 percent, or 133 of the subjects, appeared to experience a cancer recurrence. But those women who consumed three or more cups of green tea each day were less likely to see their breast cancer make a comeback.

The reduced rate of recurrence was most likely among those women with stage 1 and stage 2 breast cancer. However, the link was not apparent for those women with more advanced stages of the cancer.

Cautiously Optimistic

The researchers cautioned that these results need to be interpreted carefully. However, they do suggest that breast cancer patients who drink green tea daily may be able to prevent their cancer from returning—especially if their cancer was diagnosed in the early stages. Therefore, the research team has reason to be cautiously optimistic about the cancer-fighting capabilities of green tea.

A Closer Look at Green Tea

In order to fully understand the potential of green tea as a cancer prevention method, it is first necessary to examine the composition of the beverage. There are a number of compounds that make up green tea, including polyphenols and flavonoids, caffeine, carbohydrates, tannins, fluoride, and aluminum.

As far as cancer prevention is concerned, the most critical substance is the polyphenols—chemicals which act as antioxidants. These substances block cell replication enzymes and therefore prevent the growth of cancer in the process.

In a number of studies, researchers gave rats with breast tumors green tea to consume. These rats were then compared with rats which drank water alone. Interestingly enough, the rats which had been drinking green tea saw their tumor size reduced considerably. In addition, the studies indicated that new tumors were less likely to develop in rats which drank green tea.

How Much is Enough?

Still, you might be wondering how much green tea you would need to consume in order to significantly reduce your risk of developing breast cancer. Generally, doctors say that you need to consume at least three to four cups of green tea each day—without additives such as milk or sugar—in order to see an impact.

Does decaffeinated green tea offer the same health benefits? Actually, that depends upon the manner in which the caffeine has been removed from the tea. If a solvent has been used to decaffeinate the tea, it will contain reduced levels of EGCG, lessening its effectiveness as a cancer prevention tool. You might also consider taking your green tea in capsule form, although there is little hard evidence to indicate that the capsules are as effective as the beverage in cutting cancer risk.

Wednesday, November 1, 2006

The Fight Against Breast Cancer: Going Green

In the past few years, a number of women have turned to green vegetables in an effort to attempt to lower their risk of breast cancer. With the disease affecting as many as one in eight American women, it is only natural that women look to natural remedies in an attempt to improve their odds in the fight against this all-too-prevalent kind of cancer.

Increasingly, though, researchers are looking to another green food in an effort to cut breast cancer risk—green tea. While black tea and chamomile tea have long been thought to soothe nerves and combat depression, it is green tea which is making headlines in the world of cancer research.

A number of animal and laboratory studies have shown that green tea can be highly effective in fighting tumors in the mammary tissues. But only recently has the scientific community been able to address the effect of green tea on breast cancer in human beings.

A Case in Point

One significant study indicated that green tea extract prevents breast cancer cells from producing a chemical that leads to tumors. University of Southern California researcher Anna H. Wu and her team noted the dietary and lifestyle choices of more than 500 women with breast cancer and nearly 600 women without cancer in Los Angeles.

The women were of Asian descent and ranged in age from 25 to 74. The researchers found that the healthy women were far more likely to consume green tea. And those breast cancer patients who did drink green tea were likely to consume less of it than the healthy women were. In fact, drinking less than six tablespoons of green tea a day appeared to cut a woman’s risk for breast cancer by as much as 30 percent.

Unfortunately, women who consume a great deal of black tea do not appear to be protected from the onset of breast cancer. Since black tea is more popular in Western nations than green tea, such news can be disappointing. But the fact that green tea’s popularity is gaining strength in the West means that Western women could enjoy the same breast cancer protection that green tea drinkers in the Far East have enjoyed for years.

Green Tea and Breast Cancer Recurrence

But what about women who have already experienced breast cancer? Is it possible for them to reduce their chances of a recurrence by downing cups of green tea?

As you might expect, scientific researchers have been asking the same questions. For instance, a Japanese research team addressed those issues in their article, “Regular Consumption of Green Tea and the Risk of Breast Cancer Recurrence: Follow-up Study from the Hospital-based Epidemiologic Research Program at Aichi Cancer Center (HERPACC), Japan.”

As the Asian researchers noted, various studies indicate that green tea can inhibit the development and growth of tumors. Given that fact, they thought it helpful to examine the link between regular green tea consumption and the risk of a recurrence of breast cancer.

The researchers studied 1160 new surgical cases of female breast cancers between June of 1990 and August of 1998. About 12 percent, or 133 of the subjects, appeared to experience a cancer recurrence. But those women who consumed three or more cups of green tea each day were less likely to see their breast cancer make a comeback.

The reduced rate of recurrence was most likely among those women with stage 1 and stage 2 breast cancer. However, the link was not apparent for those women with more advanced stages of the cancer.

Cautiously Optimistic

The researchers cautioned that these results need to be interpreted carefully. However, they do suggest that breast cancer patients who drink green tea daily may be able to prevent their cancer from returning—especially if their cancer was diagnosed in the early stages. Therefore, the research team has reason to be cautiously optimistic about the cancer-fighting capabilities of green tea.

A Closer Look at Green Tea

In order to fully understand the potential of green tea as a cancer prevention method, it is first necessary to examine the composition of the beverage. There are a number of compounds that make up green tea, including polyphenols and flavonoids, caffeine, carbohydrates, tannins, fluoride, and aluminum.

As far as cancer prevention is concerned, the most critical substance is the polyphenols—chemicals which act as antioxidants. These substances block cell replication enzymes and therefore prevent the growth of cancer in the process.

In a number of studies, researchers gave rats with breast tumors green tea to consume. These rats were then compared with rats which drank water alone. Interestingly enough, the rats which had been drinking green tea saw their tumor size reduced considerably. In addition, the studies indicated that new tumors were less likely to develop in rats which drank green tea.

How Much is Enough?

Still, you might be wondering how much green tea you would need to consume in order to significantly reduce your risk of developing breast cancer. Generally, doctors say that you need to consume at least three to four cups of green tea each day—without additives such as milk or sugar—in order to see an impact.

Does decaffeinated green tea offer the same health benefits? Actually, that depends upon the manner in which the caffeine has been removed from the tea. If a solvent has been used to decaffeinate the tea, it will contain reduced levels of EGCG, lessening its effectiveness as a cancer prevention tool. You might also consider taking your green tea in capsule form, although there is little hard evidence to indicate that the capsules are as effective as the beverage in cutting cancer risk.