The "Basic Seven" Foods

1. Green and yellow leafy vegetables. These may be used either cooked or raw, fresh or frozen. They include cabbage, lettuce, broccoli, sprouts, asparagus, spinach, celery, and similar greens. These provide vitamin A to protect eyes and skin and to guard against infection. They also provide iron for the blood and roughage for elimination.

2. Fruits—at least two each day. One may be an orange or some other citrus fruit. Another may be a banana, tomato, apple, pear, peach, a bunch of grapes, or some tropical fruit. For variety use strawberries, canteloupe, or some type of melon. These fruits provide vitamin C, which is essential for strong blood vessels and healthy gums and teeth. They also provide roughage for better elimination. Fresh fruits are best for these purposes. Heat destroys vitamin C.

3. Potatoes and other vegetables. Two or more servings should be eaten each day. These include Irish potatoes, sweet potatoes, yams, beets, carrots, parsnips, lentils, onions, peas, beans, soybeans, and many more. Vitamins and minerals are present in all vegetables. Potatoes are a good source, especially when cooked in their skins. Vegetables may be used in various ways. Raw carrots are an excellent source of vitamin A. Vegetables provide bulk, which aids digestion.

4. Milk and dairy products. The very minimum for an adult should be a pint a day, or more, and a quart a day for each growing child or pregnant mother. Nursing mothers need even more. The milk may be in fluid form, as whole milk, buttermilk, skim milk, canned or evaporated milk, condensed milk, dried milk, or some form of cheese. One ounce of cheddar cheese is equal to a cup of milk. The milk can be used as a beverage or in cooking, such as soups, puddings, and desserts. Milk is a fine source of protein. It also provides minerals, vitamins, and especially calcium, which is needed for bones, teeth, nerves, and muscles.

5. Protein foods. Foods that are rich in proteins include beans, peas, soybeans, nuts, peanuts, eggs, meat, or fish. Soybeans are the richest source of proteins known. They are far richer than eggs, liver, kidney, or any other meat products and far less expensive. They have been used in the Orient for many generations. Dried peas, beans, lentils, and peanuts are all similar to meat in food value.

6. Whole-grain breads and cereals, at least two or three slices of bread and one dish of cooked cereal each day. These are particularly valuable for growing children and adults who work hard. Whole grains include wheat, rice, barley, corn, and other grains. "Enriched white flour" is better than ordinary white flour, but it is still lacking in certain essential elements. Grains and cereals provide calories for energy, as well as vitamins, minerals, and roughage. Whole grains, freshly ground, are best.

7. Butter, cream, fortified margarine, or other vegetable fats. A certain amount of fat is essential in every diet. Salad oils, olive oil, corn oil, and similar products may be substituted to meet the daily requirements for fat in the diet. Fats provide calories for heat and energy. They yield more than twice as much energy as carbohydrates.

Other foods rich in fats are egg yolk, vegetable oils, olives, nuts, and soybeans.

These are the "basic seven" food groups. One or two from each group should be included in the diet of the whole family every day. The quantities need not be large. The wider the variety, the better. Serve each food attractively. Eye appeal is always important.

In considering the "basic seven," you will notice that there is no mention of white sugar, spices, or condiments. None of these is essential in the diet. Ordinary white sugar does provide energy, but that is all. There are no vitamins or minerals in refined sugar.

In addition to these "basic seven" food groups one should include at least six to eight glasses of water each day. Water is necessary for removing wastes from the body. It aids in maintaining a normal temperature and in moistening the air we breathe. We do get some water from our foods, but not nearly enough to supply all our needs. Many who complain of sluggishness, fatigue, and nervous headaches would feel better if they were taking more water. It is best to drink between meals. Drinking water should be pure and free from harmful germs. If in doubt, boil the water before using it.

Over two thirds of the human body is composed of water in some form or other. This means that a person weighing 150 pounds has more than one hundred pounds of water in his physical make-up. Even the bones are one-third water. Without sufficient water, the blood cannot circulate properly. Nor can the digestive organs work as they should. All the cells need water. This is the remarkable fluid in which myriads of chemical and electrical reactions are taking place all the time.

A reliable supply of pure water is essential to the life and health of every family. One may live quite a while without food, but not more than a few days without water. There is no substitute for water. It is indeed the liquid of life. Those who follow the "basic seven" in their choice of foods and include a generous supply of pure water need never fear. They will be taking a balanced diet, and they will feel the benefits of good health all their lives.

The Question of Alcohol in you Diet

Alcohol, like caffeine and nicotine, is a drug. As such, it is capable of bringing about serious damage to mind and body when taken over a long period of time. Made from the fermentation of carbohydrates with yeast enzymes, alcohol is rapidly absorbed through the digestive system, affecting coordination of the muscles, nerves, and vision. It also stimulates stomach secretions, inhibits mobilization of lymphocytes so that the body's ability to fight infection is reduced, and causes sludging in the red blood cells, thereby reducing oxygen to the heart and lungs. And it affects the brain, adversely affecting the specific centers that govern self- control, judgment, and personal inhibitions.

Alcohol is a depressant. The transient feeling of well-being that goes with a couple of glasses of whisky or a dry martini—the "lift"—is followed by a series of miseries to which your body is subjected, not the least of which, for a woman, is the effect drinking alcohol has on the liver. And the insidious thing about the detrimental effects which alcohol has on health and beauty is that they occur even to the average social drinker, not just to the serious drinker and the alcoholic.

A joint study by Dr. Charles S. Leiber of the Section of Liver Disease and Nutrition at Bronx Veterans Administration and Dr. Emanuel Rubin of the Department of Pathology at Mount Sinai School of Medicine showed that too much social drinking can cause serious damage to the liver, even though the drinker may feel fine, act normally under the influence of alcohol, and not be an alcoholic. Leiber and Rubim took a group of healthy nonalcoholic volunteers and put them on a carefully controlled eight-day drinking regimen. Then they tested the subjects' livers to see what changes, if any, the alcohol had caused. The amount given to a particular group was considered equivalent to the average intake of a business executive-7 ounces of 86-proof whisky per day for the first four days, 11 ounces for the new two, and then 14 ounces for the last two. The results were surprising: there was an increase in the fat levels in the subjects' liver of from five to thirteen times, all in only eight days, and in spite of the fact that the diet of the subjects had been supplemented with vitamins.

Similar studies have turned up similar results. Researchers have also found that liver-cell damage and the increase in fat in the liver can be reversible if the drinker abstains from alcohol for long enough. But longterm damage to the liver resulting from daily consumption of alcohol over the years can be irreversible. Persistent drinking can also be a precursor not only to specific diseases of the liver such as cirrhosis, but also to other toxic conditions in the body.

Next to the skin, your liver is your body's largest organ. In many ways it is also the most important. One could, for instance, live without a stomach if necessary but never without a liver. It is the body's chemical purifier, performing more than five hundred different functions, many concerned with detoxifying the system from all the drugs, pollutants, and poisons you take in every day, including alcohol. If the liver is overworked or worn out by excess alcohol consumption, eventually and unavoidably your whole body suffers. Biochemists used to believe that excess alcohol was no more damaging to the liver than too much sugar or too much fat in the diet; that the real damage to the liver came only from malnutrition. But these theories have been disproved. Both the quantity of alcohol you drink and the duration of time over which you drink it are important factors in determining liver damage.

Because the liver is responsible either directly or indirectly for controlling levels of many hormones in a woman's body (particularly estrogen), when liver damage occurs as the result of a diet too high in fats or of drug taking or long-term alcoholic consumption, the endocrine balance can be severely upset, leading not only to disruption of the menstrual cycle but also indirectly to feelings of depression, anxiety, and chronic fatigue.

These troubles may have another cause, also related to alcohol. In order to metabolize alcohol, your body calls on its reserve of many B- complex vitamins which act as coenzymes in the process. When one eats foods containing natural concentrations of carbohydrates or sugar, such as grains and fruits, the B-complex vitamins necessary for their proper digestion and assimilation are provided by nature in the foods themselves. But the B-complex vitamins have been discarded in the processing of highly refined sugars and alcohol. So the body's own reserves can easily get depleted when you drink alcohol and eat refined sugars. Results of this depletion are many, the most common of which can be fatigue, a craving for more alcohol or sweets, or diverse emotional complaints from severe premenstrual tension to simple feelings of chronic misery.

These are just some of the reasons why the Lifestyle Diet excludes alcohol in quantities of more than a glass of wine a day. This may seem like a tremendous sacrifice to you if you are used to taking a great deal more, but once you eliminate stimulants such as coffee, tea, and alcohol from your life and begin to experience the enormous sense of well-being that comes with the low fat, low protein, complex carbohydrate diet (and all the other important things that also go with discovering and expressing your potentials mentally and physically, such as deep relaxation and exercise), you will never miss it.

How Fresh is Fresh? (Vital vitamins)

Almost every day, we're bombarded by television and radio programmes, books, newspapers and magazine articles, all telling us that the way to good health is a low-fat, high-fibre diet loaded with fresh vegetables and fruit. So we scour the supermarket shelves for the cream of the crop and (hopefully) plan our family menus around the suggested mix of 12% protein, 30% fat with the 58% balance made up of complex carbohydrates in the form of breads and other grains, pulses, fruits and vegetables. Many of us have taken things one step further, reducing animal protein, lowering fats and upping the quota of fresh produce. In theory at least, we're doing all the right things.

There's just one potential fly in the ointment. Optimum nutrition relies on optimum foods - in many instances, ones that are as close to their natural state as possible and that are on our forks almost as soon as they're out of the ground. In this respect we are in the hands of our suppliers and we owe it to ourselves to shop wisely, to make informed choices on available options (wilted 'fresh' carrots - or would frozen or canned be better?) and to prepare and cook fresh foods as carefully and conservatively as we can.

But before we begin to look at the passage of produce from farmer to family, let's consider the foods in which freshness is a real priority:

Vital vitamins

First on the list has to be the fruit and vegetable group. Although this group is one of our most important sources of vitamins (notably A and C) and minerals, we know there is a deterioration in the nutrient content of the produce that starts as soon as it's harvested and which can be accelerated by poor storage, inadequate transportation and excessive exposure to climatic extremes. Whilst few would suggest that a four-day-old carrot isn't worth eating, none would argue with the fact that a four-minute old carrot has more to offer!

Remembering that one of the most critical factors affecting vitamin loss is the storage of vegetables and fruits after harvesting. Asparagus can lose up to 50% of its vitamin C after one week of storage at 0 °C and a staggering 91% if stored at 21 ^°C. Potatoes, too, are vulnerable: stored at room temperature they lose about 15% of their vitamin C content each month. And apples, when stored under domestic conditions, are reduced to about one-third of their vitamin C value after only 2-3months.

Even worse, green cabbage loses almost all of its vitamin C after just a few days. Orange juice, as long as it is stored in sealed containers, retains almost all of its vitamin C, but once thecontainer is opened, between 30-50% will be lostin one week.

However, since munching away in a farmer's field isn't a practical option for most of us, we need to know how to make the best and freshest choices from available produce. Let's consider a quick comparison between the food values of vitamins A and C, plus the iron and calcium content, of 8 popular fruits and vegetables in their fresh state and when they are cooked.

The most interesting fact to emerge is that in almost every case, the fresh foodstuff offers higher values (in the few cases where cooked values appear to be higher, it's primarily because the raw food has become more compact as part of the cooking process).

Apart from fruits and vegetables, however, there are other foodstuffs in which freshness is unquestionably a desirable factor. Top of the list are the protein foods - meat, chicken, fish and eggs. Freshness here doesn't relate so much to the nutrient value of the foodstuff as to its safety. (For example, egg consumption in the UK recently took a terrific tumble when the then Minister of Health, Edwina Currie,linked them to possible salmonella risk.)

Then there are the foods presented to us as fresh yet which have undergone some form of processing, preserving or packaging treatment. These include fresh fruit juices, fresh milk and herbs and spices, which have been subjected to vacuum packaging, pasteurisation or irradiation, among other processes.

Finally, there are frozen foods. Not technically fresh, for many of us some frozen products have become more a question of necessity than convenience. Really fresh fish is difficult to obtain inland, while fresh peas, for example, have a limited season and an even more limited availability countrywide, yet offer excellent sources of fibre, minerals including iron (commonly inadequate in women), and vitamins. In the absence of fresh, the frozen variety, which retain most of these benefits, are the closest to the real thing that we may be able to get.

Having established that fresh is undeniably best, and extending that principle to the point of saying freshest is best, let's now look at the methods whereby fruit and vegetable produce makes its way from the farm to your shopping basket, for this is where we need to know who, among all our suppliers, is going to give us the freshest of choices.

Performance enhancement in perspective

There are countless nutritional products aimed at the sportsperson, which claim to have some performance-enhancing ability. These substances, called `ergogenic aids', theoretically improve performance to a point above that obtainable through a good training programme. Athletes are very susceptible to any claims for even the slightest improvement in performance, as fractions of a second could mean the difference between winning or losing.

Many ergogenic aids are basically expensive forms of proteins, minerals and vitamins. Their effectiveness is often unproven, based on folklore and reliant on the ignorance of the consumer (for example, substances such as Royal Jelly and wheat germ oil). On the other hand, some performance-enhancing principles are based on reputable scientific evidence that have been shown to improve performance in the laboratory (such as carbohydrate supercompensation - see overleaf).

However, it is interesting that even in cases where the supplement or _special diet has no physical basis, an athlete can sometimes gain purely psychological benefit from consuming something he or she believes in.

Proteins and amino acids

Although certain athletes may need an increased amount of protein, taking excessive amounts in the form of powdered or liquid supplements is unnecessary. Despite the claims of manufacturers, large quantities of protein will have no beneficial effects on muscle growth, strength or on performance. Any excess will simply be used as an energy source or stored as fat. In addition, kidney function may be hampered and dehydration caused as a result of taking in too much protein.

The supplements currently in vogue - especially among body builders and weight lifters - are amino acids, the 'building blocks' of proteins. The theory is that certain amino acids stimulate growth hormones. The increase however is slight and has no practical effect. Amino acids are not 'fat burners' or detoxifiers as has been claimed. Although tablets taken for this purpose are extremely expensive, the amount of amino acids in them is very small. In fact, a single egg contains far more than that found in seven or more amino acid tablets!

Vitamins and minerals

As mentioned earlier in this chapter, supplementing vitamins and minerals has no performance-enhancing properties in an athlete whose normal diet is not deficient. The effects of taking megadoses of certain vitamins may even impair performance.

Manufacturers and quasi-nutritionists have given certain substances vitamin status, although they are not scientifically classified as vitamins. For example, pangamic acid (otherwise known as vitamin B15) supposedly prevents various diseases, slows the ageing process and improves physical performance. None of these claims has been substantiated. Laetrile or vitamin B17 is a source of cyanide and has been banned. Other `pseudovitamins' are orotic acid (vitamin B13), bioflavenoids and vitamin B-T (or carnitine), all of which do not function as vitamins.

Carbohydrate loading

`Carbo-loading' is a phrase which has passed into common use. It has been proved scientifically that carbohydrate loading (otherwise known as carbohydrate supercompensation) is one of the practices which is effective in improving performance. It may be explained in the following way: Exercise which lasts for longer than 60-90 minutes is dependent on the amount of glucose available. Glycogen (glucose) stores in the muscle and liver are small, so enlarging them allows an athlete to continue exercising at a higher intensity for longer. A carbohydrate-loading programme increases the amount of muscle glycogen stored before you need to use it.

The best method of doing this is to gradually reduce the amount of training you do during the six days preceding an event and, during the final three days, eat a diet that is high in carbohydrate (500-600 grams per day). The extra glycogen stored in this way allows the athlete to continue exercising for longer.

Carbohydrates, fluids and sodium during exercise

It has been proved that supplying the body with carbohydrate during endurance-type exercise has a glycogen sparing effect which allows an athlete to exercise for longer. Many studies have been done in attempts to find a solution that will allow the maximum amount of water to be absorbed, while at the same time providing an optimal amount of carbohydrate. So far, it seems that a form of carbohydrate known as 'glucose polymers' has the best absorption rate. These are chains of glucose molecules linked together. A solution containing about 10 per cent carbohydrate in the form of glucose polymers supplies the most glucose to the body during exercise, and at the same time provides sufficient water replacement. (It is important to remember that a carbohydrate solution is only of benefit during prolonged exercise.)

Adding sodium to replacement fluids increases the concentration of the fluid. It was initially thought that this would hamper the absorption of the fluid, but the most recent findings suggest that the addition of a very small amount of salt (1-2 grams per litre) is in fact necessary for absorption.

Alcohol

Not surprisingly, it has been proved that alcohol has no beneficial effect on exercise. In reality alcohol is a depressant that slows reaction time, impairs muscle reflexes and disturbs coordination. In addition, it causes dehydration which interferes with fluid balance and has a negative effect on performance.

Caffeine

Some athletes use caffeine as a stimulant and to increase the amount of free fatty acids in the blood. Theoretically, more fat is then available to be used for energy, resulting in glycogen sparing (see above). However, an excessive amount of caffeine is necessary to produce this effect and, apart from the fact that a very high concentration of it in the urine can disqualify a competitive athlete, there are several other disadvantages to using caffeine in this way. The main one is that it has a diuretic effect, which results in increased fluid losses and a greater risk of dehydration. In addition, overconsumption of caffeine can result in headaches and nausea and it is therefore not advisable to use large doses of this stimulant in an attempt to enhance performance.

Other imposters

Royal jelly, wheat germ oil, ginseng, extracts of various herbs and numerous other products have all at one time or another been touted as performance-enhancers. The truth is, however, that the only possible effect most of these substances could have would be a psychological one.

Cancer – Can Your Diet Make the Difference?

Firstly, can it really be said with confidence that if you eat much less, or much more, of a particular foodstuff - or combination of foodstuffs - you will become immune or less at risk to this or that cancer? To begin with, it has been proved beyond doubt that cancer can be prevented in experimental animals through dietary changes. In particular, reduced energy (kilojoule) and fat intakes and increased consumption of fibre- rich foods and certain vitamins have been found to inhibit the development of cancer. The question is, can these findings be appliedto human beings?

Here there are two very important questions: Firstly, to what extent is there a link between human diet and cancer, and secondly, how drastic are the changes we have to make to our eating patterns in order to bring about a significant drop in cancer development?

The first question is possibly easier to answer than the second. Researchers are now convinced that, in dietary terms, humans share the same cancer risks as animals. Simply put, these are:

• eating too much food in general and too much fat in particular
• not eating enough of the fibre contained in grains, legumes (beans, peas, lentils), fruit and vegetables
• low intakes of certain vitamins

The fat, vitamin and fibre factors

A high fat intake leads to a high concentration of faecal bile acids which can, under certain circumstances, act as carcinogens (cancer- producing substances). A low fibre intake results in a high faecal pH value, which favours the development of carcinogens; it also causes waste to take longer to move through the bowel, allowing time for cancer-causing substances to develop and take effect. On the other hand, a low intake of certain vitamins has a negative effect on the mechanisms which combat damaging reactions in the body's cells.

High fat diets - especially those high in saturated fats - have been linked to cancers of the breast, prostate and colon-rectum and low fibre diets to the latter in particular. A diet low in vitamin C is associated with gastric cancer, while one that is deficient in vitamin A seems to create favourable conditions for prostate cancer; a lack of vitamin D is linked to cancer of the colon. The mechanisms involved in all these processes are far from clear and much research still has to be done. (See also The Cabbage Patch Diet on page 187.)

The challenge to change

Authorities on cancer such as the US National Cancer Institute, the 1988 US Surgeon-General's Report and the 1989 Report of the UK COMA (Committee on Medical Aspects of Food Policy) have laid down guidelines for dietary changes which they regard as vital in the fight against cancer. Firstly, they maintain that fat should supply only 25-30% - instead of the present 40⁰/a - of our total food intake. In effect, this reduction by a third or so would bring our fat consumption to the level of the poorest people in the big cities in the 1920s! No fall in fat intake has occurred recently in Western populations.

For a marked fall, there would have to be a big increase in the intake of carbohydrate, or starchy, foods. But as mentioned above, our bread consumption is low - 120-150g or 3 to 4 slices daily - and possibly decreasing. Why has it fallen? Firstly, there has been a marked increase in the consumption of more 'palatable' foods such as dairy produce, meat, fish and eggs and secondly, the modern era's obsession with slimness has led to the (erroneous) belief that bread is specially fattening. It is invariably one of the first foods to be restricted or cut out totally in any attempts at weight loss.

In practical terms, to reduce our fat intake to the recommended levels, the average person would have to eat a good 50% less of all visible fat - butter, margarine, spreads and obvious fat on meat - than at present. The realization that changes in this area must be large, not trivial, has been underlined by recent studies which show that in the case of breast cancer, only a very low fat intake which supplies as little as 25% of energy (50-60g fat daily), is likely to give protection.

What about fibre? The experts recommend that it be increased from the present 10-15g to 25-30g or more daily, through a higher consumption of fibre-containing foods, cereal products (wholewheat bread, brown rice and unrefined breakfast cereals), legumes, vegetables and fruit. This means adopting a diet similar to that of strict vegetarians. In the USA, surveys show that only half of the population eat one serving of fruit and one serving of 'garden' vegetables on any one day - yet four or five helpings arerecommended. The fact of the matter is that in most countries, there have been no significant increases in the amounts of plant foods eaten daily.

The picture is much the same when it comes to intakes of vitamins and mineral salts. Admittedly, pill manufacturers are doing a roaring trade, but as any doctor will tell you, that is not the way to get your vitamins. Nature has provided us with an abundance of fruit and vegetables which, apart from being excellent sources of vitamins and fibre, are a good deal lighter on the pocket than the packaged variety. In addition, some vegetables have been found to be particularly effective in fighting diet-related cancers because of their high concentrations of certain vitamins.

Vitamin supplements - the facts

Most doctors and dietitians agree that an adequate diet selected from a range of foods in the Five Food Groups and taken in the recommended portion sizes, will ensure a satisfactory intake of all nutrients, including vitamins. However, it is also recognised that vitamins which are constantly needed in the metabolism can be compared to an integral part of a work force on a factory assembly line. Each worker has a specific and vitally important role to play and his absence can jeopardise the smooth running of the whole system.

In the case of an unsatisfactory vitamin intake, one should first and foremost try to rectify the situation by improving one's diet, as food sources of vitamin also include other essential nutrients - some of which may still be unknown. Incidentally, the reason for choosing a food source rather than a vitamin in pill form is not that one's system absorbs it better - the body is in fact unable to distinguish between natural and synthetic compounds in this way. Each vitamin - whether manmade or naturally available - is a very specific compound with a unique molecular structure which is handled by the body in a particular way.

Supplements should however be considered only if, for some reason, your vitamin needs exceed your dietary intake. For example, people on strict long-term weight-reducing diets, heavy smokers and drinkers, pregnant women taking a less-than-optimal diet to cover the needs of two, or people living in isolated areas (or away on expeditions) who are unable to obtain the necessary variety of foods, may all benefit from vitamin supplements. (Incidentally, a pregnant woman should always take a supplement under a doctor's supervision only.)

A recent study (by Macfarlane et al) on 774 Indian women in Durban showed that 25% had iron deficiency anaemia and an additional 17% showed sub-clinical signs of this deficiency disease. The authors concluded that South African Indian women should receive iron supplementaton during pregnancy, as their cultural dietary habits promote an inadequate intake of this important trace element.

It has also been found that heavy smokers need more vitamin C than do non-smokers, as smoking seems to reduce the availability of vitamin C in food to the body.

The dangers of the overdose

Megadoses of vitamins are a different story. Some people assume that if a small amount of a vitamin supplement is useful under certain circumstances, more would be even better, but this is not so - in fact, abnormally large quantities of the fat-soluble vitamins (A,D,E and K) can be toxic as they accumulate in the body and excesses are not immediately lost in the urine, as is usually the case with water-soluble vitamins. However, care should be taken even with the latter: cases of `rebound scurvy' have occurred in babies whose mothers have taken excessive amounts of vitamin C during pregnancy - with the result that the baby's body reacts as if deprived when it has to depend on its own food intake after birth.

A recent study (by Read et al) in which people in seven states in the USA were questioned about their health beliefs showed that regular supplement users (who were predominantly married Caucasian women between the ages of 20 and 79) believed that supplements decreased their susceptibility to health problems ranging from colds to heart attacks and cancer, and/or reduced the severity of those problems. They also found that the higher the user's level of education, the larger the number of supplements taken, but the bottom line of the study was that more non-users rated their health as 'excellent' than regular users. The authors concluded that it remains a paradox that the well-educated, settled members of the community who are in a position to obtain all their nutrient requirements from a balanced diet, continue to be the most regular users of vitamin and mineral supplements.