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Saturday, October 13 2012

The foods we eat can affect our risk of developing certain types of cancer. High energy and high fat diets can lead to obesity and are generally thought to increase the risk of some cancers. Plant-based diets high in fresh fruits, vegetables, legumes and wholegrain foods may help to prevent cancer.

Diet is just one of the lifestyle factors that influence the risk of developing cancer. Smoking, obesity, alcohol, sun exposure and physical activity levels are also important. Although some foods can affect cancer risk, there is no evidence that specific foods can cause or cure cancer.

Food and some common cancers
Some common cancers (and how they are affected by what we eat) include:

Lung cancer – this is the leading cause of death from cancer in the world and smoking is mostly responsible. There is convincing evidence that diets high in vegetables and fruits are protective against lung cancer. It is thought that compounds called carotenoids (present in significant amounts in fruits and vegetables), as well as vitamin E, are probably responsible for some of this effect. However, the use of antioxidant supplements, such as beta-carotene and vitamin E, has not been proven to be effective in either prevention or treatment of lung cancer and may, in fact, increase the risk of developing cancer in those who smoke. While fruits and vegetables may offer some degree of protection, not smoking in the first place is by far the best prevention.
Breast cancer – this is the most common type of cancer in women in the world. There is an increased risk of breast cancer with factors such as rapid early growth, greater adult height and weight gain in adulthood. Much of the risk of developing breast cancer involves factors that influence oestrogen levels during a woman’s reproductive life, such as age of menarche (first period), number of pregnancies and breastfeeding practices. Post menopausal women who are carrying too much weight, especially around their middle, have more than twice the average risk of breast cancer. Diets high in mono-unsaturated fat and high in vegetables and fruits may reduce the risk, while alcohol consumption increases the risk.
Prostate cancer – a quarter of all new cancers diagnosed in men in UK is prostate cancer. Vegetables, soy in particular may decrease the risk, while a high fat diet that comprises mostly animal fat sources (such as dairy products, fatty meats and takeaway foods) may increase the risk. Lycopene is a potent antioxidant found in tomatoes, tomato-based products, watermelon and strawberries. It may also help lower the risk of prostate cancer.
Bowel cancer – this is the fourth most common cancer in the world. Up to 70 per cent of cases can be prevented by following a healthy lifestyle. Keeping a healthy weight, being physically active and a diet high in vegetables and fibre are protective, while consuming a large amount of red meat (especially processed meat) and alcohol may increase the risk.

Foods to ‘eat less’
Foods to limit in your diet or eat less of include:

Fatty processed red meats
Highly processed foods that are low in fibre
Heavily salted and pickled foods.

Foods to ‘eat more’
The strongest protective anti-cancer effect has been shown with:

Vegetables, especially raw vegetables or salads
Leafy green vegetables
Carrots
Tomatoes
Citrus fruits
Cruciferous vegetables like broccoli, cabbage, brussels sprouts, bok choy and other Asian greens.

Include more of these vegetables and fruits in your diet along with other varieties.

Seven a day
Eating seven or more serves daily of a variety of grains, grain products, legumes, roots and tubers will also provide protective benefits against cancer. The less processed the grains, the better. Diets high in refined starch and refined sugar may increase the risk of stomach cancer and bowel cancer.

Meat and bowel cancer
There is now convincing scientific evidence that eating processed meat increases bowel cancer risk. The World Cancer Research Fund (WCRF) has recently recommended that people avoid eating processed meat. Processed meats are any meat that has been preserved by curing, salting or smoking, or by adding chemical preservatives. These meats include hot dogs, ham, bacon and some sausages and burgers.

It is recommended that children are not given processed meats at all. This is because many of the habits we develop as children last into adulthood. Substitutes for processed meats that are recommended for children include poultry or fish, low fat cheese or small amounts of lean meat.

The WCRF also recommends limiting the amount of fresh red meat we eat to 500g (cooked weight) a week. This is because there is convincing evidence that red meat also increases a person’s risk of bowel cancer.

Some research suggests that eating burnt or charred meat may increase cancer risk, but the evidence is unclear.

Fats and cancer
There has been a great deal of interest in the possible association between fat and cancer. Current evidence does not indicate a direct link between fat intake and particular types of cancer (with the possible exception of prostate cancer). However, a high fat diet may lead to obesity, which is a risk factor for several cancers including cancer of the colon, breast, kidney, oesophagus, gallbladder and endometrium.

Supplements are not the answer
Results of studies that show a protective effect of foods containing certain nutrients should not be taken to mean that these nutrients, when isolated and taken as supplements, will provide the same benefits for cancer prevention. In some cases, there has been an increased risk of cancer in those people who take nutrient supplements at doses higher than the amount of that nutrient normally eaten in foods.

Suspect foods examined
While a high energy, low fibre diet may increase a person’s risk of developing cancer, some individual foods have also been singled out as potentially causing cancer (carcinogenic). These include:

Artificial sweeteners – such as aspartame, saccharin and cyclamate. Laboratory rats can develop bladder cancer if fed huge amounts of saccharin or cyclamate, although this is at levels thousands of times greater than a normal diet. International studies agree that humans aren’t affected in the same way. Artificial sweeteners are considered safe to eat.
Cured, pickled or salty foods – there is no conclusive evidence that red meat causes cancer. However, bacon and other cured or pickled meats contain a substance called nitrate, which has the potential to cause cancer in laboratory animals when eaten in huge doses. How this research relates to humans isn’t clear. To be on the safe side, it is best to limit the amount of cured meats in the diet because they are generally high in fat and salt. Salt has also been associated with an increased risk of stomach cancer and should be consumed in limited amounts.
Burnt or barbecued foods – a group of carcinogenic substances called polycyclic aromatic hydrocarbons (PAHs) can be produced if foods are overheated or burnt. Although charred or smoked foods could contain traces of PAHs, experts agree that the amount in the average UK diet is too low to be considered a significant cancer risk. However, when cooking, it’s best to use relatively low temperature methods wherever possible. These include steaming, boiling, poaching, stewing, casseroling, braising, baking, stir-frying, microwaving or roasting. Avoiding char-grilled meats and foods would also be smart.
Peanuts – some laboratory animals can develop cancer after eating peanuts that are contaminated with toxin-producing moulds. However, peanuts sold in the UK are generally uncontaminated and contamination is routinely screened for.
Alcohol – consuming alcohol increases the risk of cancers of the mouth, pharynx, larynx, oesophagus, breast and liver. The risk is even greater in those people who smoke. Alcohol has also been associated with colon, breast and rectal cancers. Men should drink less than two standard drinks a day and women less than one standard drink a day.

Treating cancer with food
While food plays an important role in preventing some cancers, the therapeutic value of food in treating existing cancer is less clear. It is true that a person with cancer needs excellent nutrition in order to better cope with the physical demands of the illness and the rigours of medical treatment. However, claims that particular foods, vitamins or micro nutrients can kill cancer cells should be viewed with scepticism To date, there is little scientific proof that a particular food or supplement can cure cancer or destroy cancer cells.

Recently some Japanese studies have found that green tea may delay the development and spread of certain cancers. Other studies have suggested that soy may also have a similar effect. Although this work is preliminary, it may suggest a more important role for food in the treatment of cancer in the future.

Nutrition for the person with cancer is important for many reasons, including:

The immune system needs bolstering to fight at full strength.
The diet may be adjusted to cope with various symptoms, such as constipation, diarrhoea or nausea.
Loss of appetite or an increased metabolism means that high energy foods may need to be included in the daily diet.
Extra protein may be needed to help prevent loss of muscle from weight loss.

Things to remember

High fat, low fibre diets may increase the risk of many cancers, including bowel, lung, prostate and uterine cancers.
You can reduce your risk of developing cancer by eating more fresh fruits, leafy green vegetables and wholegrain foods.
Even though diet can influence your risk of developing cancer, there is little evidence that special foods can be used to cure existing cancers.

Posted by: Ronald AT 05:37 am | Permalink | Email

Thursday, July 19 2012

Fruit Juice vs Vegetable Juice

There appears to be a difference of opinion concerning the merit of fruits versus vegetables. There is a small but zealous group of people called fruitarians who maintain that fruit is the only proper food for mankind. Then there are some like myself who favor vegetables for good health and proper nutrition. In fact, I feel that fruit, even in the broadest possible range and variety, can never provide sound health and long life.

The fruitarians maintain stoutly that through the use of fruit they enjoy good health or have regained good health after being sick. I sometimes demand proof of their statements and they offer it in various ways. For example, they use their own good health as testimony that an all-fruit diet is the proper course to follow. They also cite the gorillas and other primates as examples of fruit eaters who display great strength and good health.

Back a few years ago I could not refute these statements and even though I could not accept their theory that fruit and fruit alone was the proper diet for man, I just permitted the matter to rest. However, after a lot of study and investigation, I learned that there are few, if any, robust and healthy fruitarians. I do not know of one 100% fruitarian who has lived on a totally fruitarian diet for ten straight years, let alone 25 years or more. Therefore, if they cannot show me an example .... that is, a good example .... of someone who has remained on a strictly fruit diet for ten years or more, then what have they to offer as proof? On the other hand, I have known a few myself who tried a totally fruitarian diet and all came 'a cropper'.

Then I found proof that the statement that the gorilla eats only fruit is nothing but a myth .... and a stupid ridiculous myth at that! For years the fruitarians have been citing gorillas or other primates as an example of the value of a strictly fruitarian diet. However, upon studying the eating habits of gorillas, I learned that fruits constitute less than 10% (actually closer to 5%) of the total diet of gorillas. A detailed comprehensive book, written and tabulated by one who spent some years among them, gives this proof conclusively and it is available to anyone who wishes to get it. The title of the book is, "The Mountain Gorilla Ecology and Behaviour," written by George B. Schaller and published by the University of Chicago Press.

The reason I have taken the trouble to bring this whole matter of the gorilla and the fruitarian diet into the open is that with the exaggerated claims of the fruitarians and the fact that the fruitarian diet is pleasing and delectable, many people might be led to believe their claims and perhaps do themselves serious harm. I have witnessed just that in at least four instances.

My many years of reasearch and study have clearly and unmistakably indicated that vegetables are a better source of nutrition than fruits. It is admitted that most fruits are more pleasant, more palatable and more delectable and no doubt require less work in preparation than vegetables, but it appears certain that vegetables are more valuable nutritionwise.

I stress to you readers who are seeking health that you do not make the mistake of trying to regain or maintain your health on a diet of fruit juice alone. I maintain that it cannot be done.

It is my way of life to read and study nutrient charts and from these charts I learn and then base my opinions. Thus, when I say that vegetables contain many more essential nutrients than fruit, I want you to know that I have investigated the matter.

One must not judge the nutritional value of fruits and vegetables by taste and flavor alone. A vegetable I consider to be one of the finest — namely, cabbage — is acceptable when sliced, shredded or chunked but it is much, much less palatable in the juice form. In fact, I know of few if any less desirable juices than cabbage. However, in an actual research project it was found that cabbage juice therapy was a safe and almost positive way to rid oneself of ulcers.

Again, do not judge the merit of a juice by palatability alone. Remember, we go on a juice regimen in order to improve or regain our health .... not as a fad or for fun. It is strictly a means of survival, so flavor is not of importance. On the other hand, one need not sacrifice everything nor follow a spartan regimen. One can have a fair amount of the more enjoyable fruit juice .... for example, one-third fruit juice and two-thirds vegetable juice .... but I would strongly advise that they not be mixed. Although an apple will improve the flavor of many vegetable juices, I advise that you take your fruit and vegetable juices separately.

It is important, in my opinion, that the variety of fruits and vegetables used be as broad as possible. Do not restrict yourself to the juices of one or two fruits and one or two vegetables. Make positively sure that you get a broad variety. In this way your diet will be properly balanced .... and this will be reflected in the way you feel and the way you look. You will note, if you study charts, that some juices contain large amounts of one nutrient or element whereas other juices contain large amounts of other nutrients or elements.

It is claimed that fruit juice is the cleanser of the body. No doubt you have noticed that fruit juice cause a much greater frequency of urination and, thus, they are generally referred to as cleansers. In my opinion, the fact that they make you urinate frequently does not necessarily mean that they are cleansers .... but that is the value that many authorities attribute to them. However, you can be sure that a lot of fruit means a lot of urine.

A few years ago I had a friend visiting me from Alaska and he confided in me that he was fearful that he was developing diabetes. I asked him why he was fearful and he told me that recently he had been urinating much more than usual. He also told me that, knowing he was coming to visit me, he had gone on a fresh fruit diet. I pointed out that a diet of fruit, especially melons, will greatly increase the flow and frequency of urine. It turned out he had nothing to fear .... it was simply 'much fruit, much urine'.

While fruit juices are referred to as cleansers of the human body, vegetable juices are called the regenerators or builders and this tends to bear out my belief that vegetable juices contain more nutrients than fruit juices. My studies reveal that vegetable juices contain practically all of the nutrients required to build and sustain the human body in optimum health.

For those who are addicted to drinking and consuming large quantities of tea, coffee, milk or other beverages, I would like to suggest that drinking fruit or vegetable juices would be far more beneficial health wise and, of course, fruit or vegetable juices are not addictive. Desirable and pleasant, yes, but addictive, no! At the same time I would like to remind you rather emphatically that fruit or vegetable juice is not just a refreshing drink like water or pop, but it is a food .... and a potent, health-giving food at that!

In using juices, remember, no seasoning should ever be added. In fact, to add seasoning of any kind would detract from the value of the juice or create an imbalance. Never, ever add salt to, any fresh juice. In fact, if you value your health, do not add salt to any food.

My enthusiasm for fresh vegetable and fruit juices did not spring up overnight. It slowly developed over a period of many long years, during which time I watched experiments and learned just what these juices can do.

Well, I have a love affair with vegetable juices and I want to tell you that that love affair is based on the soundest foundation that exists on earth .... I saw with my own two eyes some of the lives that were saved by vegetable juices. Yes, I actuallly saw terminal cancer cases turned back to good health even after the medical doctors said that no more could be done. It is not hard to have a love affair with such a virile lover!

Posted by: Adam Brookover AT 01:26 am | Permalink | Email

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