Free Radicals

Free radicals are oxygen-containing chemicals that have an impaired electron. The impaired electron makes free radicals highly reactive to DNA, proteins, membranes, and other cell machineries, resulting in oxidative damages including DNA mutations, protein dysfunction, and destruction of membrane and other cell structures. These oxidative damages promote aging and increase the risk of age-related diseases such as cancer, cardiovascular diseases, immune system declines, brain dysfunction, and cataracts. Known free radicals that are involved in the aging process are superoxide, hydrogen peroxide (H2O2), hydroxyl radical (OH), singlet oxygen, lipid epoxides, lipid hydroperoxides, lipid alkoyl, peroxyl radicals, and oxides. They are either produced during our normal metabolisms or introduced into our bodies from outside sources.

The effective way to reduce free radical damage to the body is by eating whole plant foods such as grains, vegetables, and fruits that contain various types of potent antioxidants.

Heart Diseases and Foods

Coronary heart disease is the most common of all heart diseases. It is characterized by blockage in the coronary arteries that result in reduction of blood flows to the heart muscle, depriving it of vital oxygen. The clogging of coronary artery, known as arteriosclerosis, begins with fatty streaks in and under the layer of cells, that line artery walls. Gradually, the streaks are transformed into plaques-fatty scar tissue that bulges into the artery opening, partly choking off blood flow.

If the clot becomes large enough, it can block blood flow, suffocating large patches of cardiac muscle, an event known as a heart attack or angina. Or if a blood vessel to the brain closes off or ruptures, it will result in a stroke. While the exact causes of coronary heart disease are imperfectly understood, certain major risk factors have been identified, including genes, gender, diet, and lifestyle - smoking, exercise, and stress.

Scientific evidence indicates that diet is vital to whether your arteries clog or your heart gives out. Stopping the progression of artery disease in the first place with your diet is foremost in warding off heart attacks and strokes. Even if you already had heart problems, including a heart attack, changing your diet now may prevent future cardiac problems and even halt or reverse arterial damage, helping restore arteries to health.

Foods with anti-heart disease activity can:

1. Block platelet aggregation (clotting)
2. Reduce blood vessel constriction
3. Increase blood flow
4. Lower fibrinogen (clotting factor)
5. Increase fibrinolytic (clot-dissolving) activity
6. Block cell damage from oxygen free radicals
7. Lower triglycerides
8. Raise good HDL cholesterol
9. Makes cell membranes more flexible
10. Lower blood pressure

However, wrong food choice may do just the opposite of the above.

Brain Power Foods

Brain power is characterized by how alert, energetic, and concentrated your brain is in response to a task. Information in your brain passes through neurotransmitters, which are manufactured by the nerve cells using precursors. Different neurotransmitters will have different impacts on your brain activity. For example, serotonin is the calming neurotransmitter that usually makes you more relaxed, drowsy, and fuzzy-headed. While dopamine and norepinephrine are neurotransmitters that make you more alert, more attentive, motivated and mentally energetic.

Food affects your brain power by affecting the production of neurotransmitters in your brain. By supplying amino acids, which are used as precursors to manufacture neurotransmitters, and by affecting the entry of the amino acids into brain, foods can have a significant impact on your brain activity. High-carbohydrate foods in general tend to subdue brain activity. Protein foods, on the other hand, can counteract carbohydrate food induced sluggishness. In addition, foods and herbs can have effects on brain activity by affecting blood circulation - the supply line of oxygen, nutrient, and hormone to the brain.

Eat Your Way to Health and Longevity

Eating is one the most important events in everyone’s life. We enjoy eating - it’s part of who we are and part of our culture; in fact, eating is the hottest universal topic of all times. We depend on eating: the foods we eat are the sole source of our energy and nutrition. We know so much about eating: we are born with the desire to eat and grown up with rich traditions of eating. But we also know so little about eating - about how the foods we eat everyday affect our health. We are more confused than ever about the link between diet and health: margarine is healthier than butter or not; a little alcohol will keep heart attacks at bay but cause breast cancer; dietary vitamin antioxidants can prevent lung cancer or can not. Eating is a paradox and a mystery that our ancestors tried and modern scientists are trying to solve.

Based on experiences and traditions, our ancestors have used foods and plant materials to treat various kinds of illness. Manuscripts discovered from a tomb (dated 168 B.C.) in China described prescriptions for 52 ailments with herbs, grains, legumes, vegetables, animal parts, and minerals. Ancient Sumerians recorded the use of 250 medicinal plants on tablets five thousand years ago. Today, plant and food remedies are still the major medicinal source for 80% of the world’s population.

The pharmacological roles of everyday foods have long been neglected by modern medicine due to lack of proven scientific validity. The main focus of modern medicine has been on pharmaceuticals. With the invention of modern chemotherapy by Paul Erhlich in the early twentieth century and sulfa drugs and antibiotics in the 1930’s and 1940’s, it seemed as if chemical medicines would take care of all our ills. However, while there continues to be great strides made in the understanding and use of pharmaceuticals, there is also widespread dissatisfaction with both them and the system of medicine that utilizes them. This dissatisfaction is centered around the feeling that they are too disease-oriented, and perhaps too limited by their precision to cope effectively with the subtle factors and interrelationships that compromise human health and disease. The precise and pure nature of modern biomedical pharmaceuticals also tends to increase their side effects. In addition, with the victory over many common infectious diseases, more people are concerned with chronic degenerative processes and with prevention of disease. The increasing concerns have started a new movement in medical research. More and more mainstream scientists are reaching back to the truth of ancient food folk medicines and dietary practices for clues to remedies and antidotes to our modern diseases.

Research on pharmacological effects of foods is fast-paced and the results are exciting. The mystery of what foods can do for or to us has started to unveil. In order to effectively use foods for our health benefits, the following issues need to be considered:

• Keep up with the most recent scientific findings and make use of them for our health benefits
• Try to use variety of whole foods as much as possible instead of isolated dietary supplements for your health problems - they are safer, cheaper, and usually more effective since they can provide multiple and balanced disease fighting capabilities
• Choice of foods is important: since healing power of a food is depending on the content of pharmacologically active constituents that differ among foods, and certain foods may need to be avoided due to their disease encouraging activities
• How do you prepare and eat your foods can affect their pharmacological effects
• Concerns about multiple health conditions: foods that benefit one health condition may be harmful to others
• Overall nutritional values of foods